阅读说明：本技术 一种观测微生物固化与植被生长的试验装置及其使用方法 (Test device for observing microorganism solidification and vegetation growth and using method thereof ) 是由 张永杰 邹全 王思 程鑫 刘涛 黄万东 王桂尧 于 2020-04-16 设计创作，主要内容包括：本发明公开了一种观测微生物固化与植被生长的试验装置及其使用方法,包括：试验盒、观测装置和注浆装置；试验盒包括用于盒体、设置于盒体内以将所述盒体内部分隔成多个土体观测空间的分隔墙,每个土体观测空间中具有至少一个沿竖直方向延伸至盒体的底部的观测管；观测装置包括彼此电连接的观测主机以及探测设备,探测设备包括支撑组件和能够横向运动以及竖向运动地安装于所述支撑组件的探头,以能够使探头相对于所述盒体横向运动以及通过竖向运动进出所述观测管。该观测微生物固化与植被生长的试验装置旨在解决现有技术中的试验装置无法用于评价固化后土体表层植被的生长状况,也无法控制微生物固化技术固化土体表层土的厚度的技术问题。(The invention discloses a test device for observing microorganism solidification and vegetation growth and a using method thereof, wherein the test device comprises the following steps: the device comprises a test box, an observation device and a grouting device; the test box comprises a box body and a partition wall arranged in the box body to divide the interior of the box body into a plurality of soil observation spaces, wherein each soil observation space is provided with at least one observation pipe extending to the bottom of the box body along the vertical direction; the observation device comprises an observation host and a detection device which are electrically connected with each other, wherein the detection device comprises a support component and a probe which is mounted on the support component in a transverse motion and vertical motion mode, so that the probe can move transversely relative to the box body and move in and out of the observation tube through the vertical motion. The test device for observing microbial curing and vegetation growth aims to solve the technical problems that the test device in the prior art cannot be used for evaluating the growth condition of cured soil body surface vegetation and cannot control the thickness of soil on the surface of a cured soil body by a microbial curing technology.)

1. The utility model provides an observe test device that microorganism solidification and vegetation are grown which characterized in that includes: the device comprises a test box, an observation device and a grouting device;

the test box comprises a box body for placing soil, and partition walls arranged in the box body to divide the interior of the box body into a plurality of soil observation spaces, wherein each soil observation space is provided with at least one observation tube extending to the bottom of the box body along the vertical direction;

the observation device comprises an observation host and a detection device which are electrically connected with each other, wherein the detection device comprises a support component and a probe which is mounted on the support component in a manner of being capable of moving transversely and vertically so as to enable the probe to move transversely relative to the box body and move into and out of the observation tube through the vertical movement;

the slip casting device includes grouting equipment and is used for the lid the slip casting board of the top of box body, the slip casting board has and link up the correspondence of the upper surface and the lower surface of slip casting board the observation pipe preformed hole of observation pipe, the lower surface of slip casting board is provided with a plurality of slip casting shower nozzles, the upper surface of slip casting board be provided with the slip casting mouth that grouting equipment connects, the slip casting mouth with a plurality of slip casting shower nozzles pass through the thick liquid runner in the slip casting board is connected.

2. The test device for observing microbial curing and vegetation growth of claim 1, wherein the grouting nozzle is in threaded connection with a threaded interface of the grouting plate, and a sealing nut is adapted at the threaded interface.

3. The experimental device for observing the solidification of microorganisms and the growth of vegetation according to claim 1, wherein a bottom plate of the box body is provided with a partition wall groove for fixing the partition wall and an observation tube groove for fixing the observation tube, water stop rings are arranged in the partition wall groove and the observation tube groove, the observation tube is a transparent tube, and the partition wall is a transparent plate.

4. The experimental device for observing the solidification of microorganisms and the growth of vegetation as claimed in claim 3, wherein the partition wall is provided with scales for determining the solidification depth of the surface soil body in the area, and the observation tube is provided with annular marks at the same height as the wall top of the partition wall.

5. The test device of observation microbial curing and vegetation growth of claim 4, characterized in that be provided with a plurality of slip casting board mid-boards in the slip casting board with the slip casting board is separated into a plurality of slip casting districts, the thick liquid runner include with the first slip casting pipe that the slip casting mouth is connected and with the second slip casting pipe that first slip casting union coupling, every be provided with in the slip casting board mid-board first slip casting pipe, be provided with in every slip casting district the second slip casting pipe, be provided with slip casting pipe switch on the first slip casting pipe, second slip casting pipe accesss to the slip casting shower nozzle, be provided with in every slip casting district the slip casting shower nozzle, and the slip casting district be in the box body top with the space one-to-one is observed to the soil body.

6. The test device for observing microbial curing and vegetation growth of claim 5, wherein the grouting equipment comprises a slurry tank, a flow meter and a slurry pump, and the slurry tank, the flow meter, the slurry pump and the grouting opening are sequentially connected through a pump pipe.

7. The test device of observation microbial curing and vegetation growth of claim 6, characterized in that, be provided with light source, camera and laser emitter on the probe, the detector support includes support frame, slide rail, electronic commentaries on classics machine and threaded rod, be provided with the level bubble on the electronic commentaries on classics machine, the slide rail erects in the support frame and spanes the top of box body, electronic commentaries on classics machine slidable mounting on the slide rail, the threaded rod liftable ground with electronic commentaries on classics machine transmission is connected, the probe is connected to through the drive pivot the threaded rod lower extreme.

8. The experimental device for observing microbial curing and vegetation growth of claim 7, wherein a line passing hole is formed in the threaded rod, the observation host is electrically connected with the probe through a power data line, the power data line penetrates through the line passing hole to be electrically connected with the light source, the camera and the laser emitter, the observation host is further in signal connection with the control device of the driving rotating shaft, and the laser emitter is located at the position where the bottom of the probe coincides with the central axis of the driving rotating shaft.

9. The apparatus of claim 8, wherein the apparatus comprises a cover plate adapted to the upper port of the observation tube, a circular hole is provided in the center of the upper portion of the cover plate, a protrusion is provided at the lower end of the cover plate, the outer diameter of the protrusion is equal to the inner diameter of the observation tube, so that the circular hole is always located on the central axis of the observation tube after the cover plate is covered on the observation tube, and the circular hole is used for aligning with the laser emitted from the laser emitter.

10. Use of the test device for observing microbial colonization and vegetation growth of any one of claims 7 to 9, wherein the use comprises the steps of:

a. inserting the observation tube into the observation tube groove, inserting the partition wall into the partition wall groove, fixing the observation tube and the partition wall, filling a target soil body in the box body in a layering manner, compacting the target soil body, and ensuring that the compactness of the target soil body in each area is the same and the height of the target soil body is consistent with that of the partition wall;

b. placing the lower surface of the grouting plate on a soil body, enabling the observation pipe to penetrate through a preformed hole of the observation pipe on the grouting plate, pressing the grouting plate to a target soil body, and enabling the grouting spray head to be pressed into the target soil body;

c. putting the bacterial liquid and the cementing liquid into different slurry tanks, opening a grouting pipe switch of a region to be cemented, opening a slurry pump, determining the amount of the injected slurry through a flowmeter, injecting the bacterial liquid firstly, standing for a period of time, and then injecting the cementing liquid;

d. after grouting, spraying a layer of nutrient soil containing plant seeds on the surface layer of the solidified soil body, placing the solidified soil body in the sunlight and carrying out daily maintenance to ensure the normal growth of plants;

e. after the plant root system starts to grow, the detection equipment is placed at a designated position around the test box, and then the centering and leveling operation of the support assembly is completed;

f. and (3) opening the observation host, controlling the probe to move downwards to an annular mark of the observation pipe, wherein the position corresponding to the annular mark is the upper surface of the soil layer, opening a light source and a camera on the probe, recording the descending height of the probe from zero by the observation host, and acquiring a required root system growth picture through the camera after the probe reaches a designated position.

Technical Field

The invention relates to the field of civil engineering tests, in particular to a test device for observing microorganism solidification and vegetation growth and a using method thereof.

Background

The microorganism induced carbonate deposition technology (MICP) utilizes specific microorganisms (such as high-yield urease bacteria, denitrifying bacteria and the like) to provide rich calcium ions and nitrogenous nutritive salt for the microorganisms, so that the calcium ions and the carbonate ions generated under the action of the microorganisms quickly react to generate calcite type calcium carbonate crystals with excellent cementing property, the pollution in the whole process is small, the cost is low, and therefore, the technology is utilized to solidify soil, the mechanical property of the soil is improved, and good environmental benefits can be considered. In the application of the geotechnical engineering field, the microorganism induced calcium carbonate deposition technology (MICP) is mainly used for reinforcing rock and soil mass, preventing seepage, preventing sandy soil from liquefying, treating polluted soil body and the like, most of the test devices related to the MICP technology are used for evaluating physical and chemical parameters of a cured main body, such as compressive strength, permeability and the like, and the obtained geotechnical mechanical parameters are compared with the original geotechnical mechanical parameters for research to evaluate the reinforcing effect of the MICP technology.

The MICP technology is combined with ecological slope protection, and in conclusion, the existing test device cannot be used for evaluating the growth condition of the solidified soil body surface vegetation and cannot control the thickness of the solidified soil body surface soil by the microorganism solidification technology.

Disclosure of Invention

Technical problem to be solved

Based on the above, the invention provides a test device for observing microbial solidification and vegetation growth, which aims to solve the technical problems that the test device in the prior art cannot be used for evaluating the growth condition of solidified soil surface vegetation and cannot control the thickness of solidified soil surface soil of a microbial solidification technology.

(II) technical scheme

In order to solve the technical problems, the invention provides a test device for observing microorganism solidification and vegetation growth, which comprises: the device comprises a test box, an observation device and a grouting device;

the test box comprises a box body for placing soil, and partition walls arranged in the box body to divide the interior of the box body into a plurality of soil observation spaces, wherein each soil observation space is provided with at least one observation tube extending to the bottom of the box body along the vertical direction;

the observation device comprises an observation host and a detection device which are electrically connected with each other, wherein the detection device comprises a support component and a probe which is mounted on the support component in a manner of being capable of moving transversely and vertically so as to enable the probe to move transversely relative to the box body and move into and out of the observation tube through the vertical movement;

the slip casting device includes grouting equipment and is used for the lid the slip casting board of the top of box body, the slip casting board has and link up the correspondence of the upper surface and the lower surface of slip casting board the observation pipe preformed hole of observation pipe, the lower surface of slip casting board is provided with a plurality of slip casting shower nozzles, the upper surface of slip casting board be provided with the slip casting mouth that grouting equipment connects, the slip casting mouth with a plurality of slip casting shower nozzles pass through the thick liquid runner in the slip casting board is connected.

Preferably, the grouting nozzle is connected to a threaded interface of the grouting plate in a threaded manner, and a sealing nut is adapted to the threaded interface.

Preferably, the bottom plate of the box body is provided with a partition wall groove for fixing the partition wall and an observation tube groove for fixing the observation tube, water stop rings are arranged in the partition wall groove and the observation tube groove, the observation tube is a transparent tube, and the partition wall is a transparent plate.

Preferably, the partition wall is provided with scales for determining the solidification depth of the surface soil body of the area, and the observation tube is provided with an annular mark at the same height as the wall top of the partition wall.

Preferably, be provided with a plurality of slip casting board mid-boards in the slip casting board in order to incite somebody to action the slip casting board separates into a plurality of slip casting districts, the thick liquid runner include with the first slip casting pipe that the slip casting mouth is connected and with the second slip casting pipe that first slip casting union coupling, every be provided with in the slip casting board mid-board first slip casting pipe is provided with in every slip casting district the second slip casting pipe, be provided with slip casting pipe switch on the first slip casting pipe, the second slip casting pipe accesss to the slip casting shower nozzle, be provided with in every slip casting district the slip casting shower nozzle, and the slip casting district is in the box body top with the space one-to-one is observed to the soil body.

Preferably, the grouting equipment comprises a slurry tank, a flow meter and a slurry pump, and the slurry tank, the flow meter, the slurry pump and the grouting opening are sequentially connected through a pump pipe.

Preferably, be provided with light source, camera and laser emitter on the probe, the detector support includes support frame, slide rail, electronic commentaries on classics machine and threaded rod, be provided with the level bubble on the electronic commentaries on classics machine, the slide rail erects the support frame and spanes the top of box body, install electronic commentaries on classics machine slidable on the slide rail, the threaded rod liftable ground with electronic commentaries on classics machine transmission is connected, the probe is connected to through the drive pivot the threaded rod lower extreme.

Preferably, a line passing hole is formed in the threaded rod, the observation host is electrically connected with the probe through an electric power data line, the electric power data line penetrates through the line passing hole to be electrically connected with the light source, the camera and the laser emitter, the observation host is further in signal connection with the control device of the driving rotating shaft, and the laser emitter is located at the position where the bottom of the probe is overlapped with the central axis of the driving rotating shaft.

Preferably, the testing device comprises a cover plate adapted to the upper port of the observation tube, a circular hole is formed in the center of the upper portion of the cover plate, a protruding portion is formed at the lower end of the cover plate, the outer diameter of the protruding portion is equal to the inner diameter of the observation tube, so that after the cover plate is covered on the observation tube, the circular hole is always located on the central axis of the observation tube, and the circular hole is used for being aligned and matched with laser emitted by the laser emitter.

In addition, the invention also provides a use method of the test device for observing microorganism solidification and vegetation growth, wherein the use method comprises the following steps:

a. inserting the observation tube into the observation tube groove, inserting the partition wall into the partition wall groove, fixing the observation tube and the partition wall, filling a target soil body in the box body in a layering manner, compacting the target soil body, and ensuring that the compactness of the target soil body in each area is the same and the height of the target soil body is consistent with that of the partition wall;

b. placing the lower surface of the grouting plate on a soil body, enabling the observation pipe to penetrate through a preformed hole of the observation pipe on the grouting plate, pressing the grouting plate to a target soil body, and enabling the grouting spray head to be pressed into the target soil body;

c. putting the bacterial liquid and the cementing liquid into different slurry tanks, opening a grouting pipe switch of a region to be cemented, opening a slurry pump, determining the amount of the injected slurry through a flowmeter, injecting the bacterial liquid firstly, standing for a period of time, and then injecting the cementing liquid;

d. after grouting, spraying a layer of nutrient soil containing plant seeds on the surface layer of the solidified soil body, placing the solidified soil body in the sunlight and carrying out daily maintenance to ensure the normal growth of plants;

e. after the plant root system starts to grow, the detection equipment is placed at a designated position around the test box, and then the centering and leveling operation of the support assembly is completed;

f. and (3) opening the observation host, controlling the probe to move downwards to an annular mark of the observation pipe, wherein the position corresponding to the annular mark is the upper surface of the soil layer, opening a light source and a camera on the probe, recording the descending height of the probe from zero by the observation host, and acquiring a required root system growth picture through the camera after the probe reaches a designated position.

(III) advantageous effects

Compared with the prior art, the test device for observing microorganism solidification and vegetation growth has the advantages that:

1) the whole test device adopts an assembling mode, the assembling step is simple to operate, and the test device is convenient to disassemble and transport;

2) the test box is provided with the partition walls, the partition walls divide the test box into different areas, a comparison test can be simultaneously carried out on the test box, and the partition walls are provided with scales, so that the solidification thickness of surface soil of each area can be controlled.

3) The observation host can accurately control the descending height of the probe and record the descending height of the probe, so that the accuracy of the whole test is improved, and the probe is provided with a light source to ensure the imaging effect in a dark environment, and adopts full-angle rotation, so that the growth condition of plant roots around the whole observation tube can be observed conveniently, and more image data can be obtained to analyze the test result;

4) the grouting heads are fixed on the grouting plates in a bolt mode, different areas are provided with different lengths of grouting nozzles in different areas in the test box, so that different areas have different surface soil solidification thicknesses, convenience, simplicity and accuracy are realized, and in addition, the number of the grouting nozzles in different areas can be easily controlled by introducing sealing nuts;

5) the arrangement of the grouting pipes and the arrangement of the grouting pipe switches can meet the requirement of grouting in each area simultaneously, grouting pressure is consistent when grouting in each area is guaranteed, regional partition grouting is not needed, and the diversity of the whole test grouting process is enhanced.

6) The introduction of the slide rail well solves the problem of centering of the detection equipment.

Drawings

The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the invention in any way, and in which:

FIG. 1 is a schematic view of a test apparatus for observing microbial solidification and vegetation growth in accordance with an embodiment of the present invention;

FIG. 2 is a perspective view of the bottom plate of the cassette of an embodiment of the present invention;

FIG. 3 is a top view of a slip sheet according to an embodiment of the present invention;

FIG. 4 is a bottom view of a grout plate according to an embodiment of the present invention;

FIG. 5 is an internal structural view of a grouting plate according to an embodiment of the present invention;

FIG. 6 is a schematic view of a grouting apparatus according to an embodiment of the present invention;

FIG. 7 is a partial component view of a detection apparatus according to an embodiment of the present invention;

FIG. 8 is a schematic view of the assembly of a threaded rod and an electric rotary machine in accordance with an embodiment of the present invention;

FIG. 9 is a general schematic diagram of a detection apparatus according to an embodiment of the present invention;

FIG. 10 is a partially assembled schematic view of a detection apparatus according to an embodiment of the present invention;

FIG. 11 is a schematic view of a cover plate according to an embodiment of the present invention;

FIG. 12 is a schematic view of a cartridge according to an embodiment of the present invention.

Description of reference numerals:

1. observing the host; 2. a power data line; 3. a box body; 4. a detection device; 5. a dividing wall; 6. an observation tube; 7. a dividing wall groove; 8 observing the groove of the tube; 9. a grouting plate mid-partition; 10. observing a preformed hole of the tube; 11. a grouting port; 12. grouting plates; 13. a grouting pipe switch; 14. grouting nozzles; 15. a first grouting pipe; 16. a second grouting pipe; 18. a threaded rod; 19. driving the rotating shaft; 20. a probe; 21. a light source; 22. a camera; 23. a rotating machine gear; 24. electrically rotating the machine; 25. leveling air bubbles; 26. a slide rail; 27. a support frame; 28. a first helical support; 29. a pump tube; 30. a slurry pump; 31. a flow meter; 32. a slurry tank; 33. a slider; 34. a second screw support; 35. a cover plate; 36. a circular hole.

The parts not marked in the figures do not relate to the core inventive point of the present invention and are therefore not marked one by one.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.

Referring to fig. 1 and 12, the present invention provides a test device for observing microbial solidification and vegetation growth, wherein the test device comprises: the device comprises a test box, an observation device and a grouting device;

the test box comprises a box body 3 for placing soil bodies and a partition wall 5 arranged in the box body 3 to divide the interior of the box body 3 into a plurality of soil body observation spaces, wherein each soil body observation space is provided with at least one observation pipe 6 extending to the bottom of the box body 3 along the vertical direction;

the observation device comprises an observation host 1 and a detection device 4 which are electrically connected with each other, wherein the detection device 4 comprises a support component and a probe 20 which is mounted on the support component and can move transversely and vertically so as to enable the probe 20 to move transversely relative to the box body 3 and move vertically into and out of the observation tube 6;

the grouting device comprises grouting equipment and a grouting plate 12 used for covering the box body 3, the grouting plate 12 is provided with observation pipe preformed holes 10 which penetrate through the upper surface and the lower surface of the grouting plate 12 and correspond to the observation pipes 6, the lower surface of the grouting plate 12 is provided with a plurality of grouting nozzles 14, the upper surface of the grouting plate 12 is provided with grouting ports 11 connected with the grouting equipment, the grouting ports 11 are connected with the plurality of grouting nozzles 14 through grout flow passages in the grouting plate 12, of course, the observation pipes 6 are just right coincident with the observation pipe preformed holes 10 in the grouting plate 12, different numbers of grouting nozzles 14 can be arranged in different areas, and the optimal grouting effect is found by arranging different numbers of grouting nozzles 14 in different areas.

Preferably, the grouting nozzles 14 are connected to the screw interfaces of the grouting plate 12 in a threaded manner, sealing nuts (such as rubber nuts or other nuts of various suitable types) are adapted to the screw interfaces, openings of the screw interfaces are arranged in the lower surface of the grouting plate to prevent protruding parts of the screw interfaces from being inserted into the surface of the soil layer to affect experimental results, the sealing nuts are arranged to seal the screw interfaces to prevent slurry leakage, and sealing nuts can be used to seal different numbers of screw interfaces in different partitions to adjust the number of the grouting nozzles 14 actually operated in different partitions, so that the influence of the number of the grouting nozzles 14 on the microorganism solidification effect can be researched, and the great significance of introducing the sealing nuts is that the number of the grouting nozzles 14 actually operated can be completely controlled by the sealing nuts to set a fixed number of the grouting nozzles 14, the number of the grouting nozzles 14 in each area does not need to be adjusted frequently, and the number of the grouting nozzles 14 can be flexibly adjusted only through the sealing nuts.

According to the specific embodiment of the invention, the bottom plate of the box body 3 is provided with a partition wall groove 7 for fixing the partition wall 5 and an observation tube groove 8 for fixing the observation tube 6, water stop rings are arranged in the partition wall groove 7 and the observation tube groove 8, the observation tube 6 is a transparent tube, and the partition wall 5 is a transparent plate. The division wall 5 is provided with scales for determining the solidification depth of the surface soil body of the area, and the observation tube 6 is provided with annular marks at the same height with the wall top of the division wall 5.

In addition, a plurality of partition walls 9 of the grouting plate 12 are arranged in the grouting plate 12 to divide the grouting plate 12 into a plurality of grouting areas, a grout flow channel comprises a first grouting pipe 15 connected with a grouting opening 11 and a second grouting pipe 16 connected with the first grouting pipe 15, the first grouting pipe 15 is arranged in each partition wall 9 of the grouting plate 12, the second grouting pipe 16 is arranged in each grouting area, a grouting pipe switch 13 is arranged on the first grouting pipe 15, the second grouting pipe 16 leads to a grouting nozzle 14, a grouting nozzle 14 is arranged in each grouting area, and the grouting areas are in one-to-one correspondence with soil observation spaces above the box body 3. The grouting equipment comprises a slurry tank 32, a flow meter 31 and a slurry pump 30, wherein the slurry tank 32, the flow meter 31, the slurry pump 30 and the grouting port 11 are sequentially connected through a pump pipe 29.

According to the embodiment of the invention, the probe 20 is provided with the light source 21, the camera 22 and the laser emitter, the detector support comprises a support frame 27, a slide rail 26, an electric rotating machine 24 and a threaded rod 18, the electric rotating machine 24 is provided with a leveling bubble 25, the lower end of the support frame 27 can be provided with a first spiral support 28, the slide rail 26 is erected on the support frame 27 and crosses over the box body 3, the electric rotating machine 24 is slidably mounted on the slide rail 26 (for example, by a slide block 33, and a second spiral support 34 is arranged between the electric rotating machine 24 and the slide block 33), the threaded rod 18 is in transmission connection with the electric rotating machine 24 in a lifting manner (for example, a rotating gear 23 mounted by the electric rotating machine 24 is matched with a straight tooth part on the threaded rod 18), and the probe 20 is connected to the lower end of the threaded rod 18 by a driving rotating shaft 19 (the driving. In the specific operation, when the plant root system starts to grow, the detection device 4 is placed at a designated position around the test box, the first spiral support 28 at the lower end of the support frame 27 is adjusted to perform rough leveling, the observation tube 6 is covered with the cover plate 35, the observation host 1 is opened, then the sliding block 33 is moved, the laser on the probe 20 is aligned to the circular hole 36 on the cover plate 35, the laser is closed, and the second spiral support 34 on the electric rotating machine 24 is adjusted to perform precise leveling. Taking the cover plate 35 away, operating the observation host 1 to control the probe rod to move downwards to the annular mark of the observation tube 6, wherein the position corresponding to the mark is the upper surface of the soil layer, turning on the light source 21 and the camera 22 on the probe 20, recording the descending height of the probe 20 from zero by the observation host 1 at the moment, and shooting to obtain a required root growth picture (which will be mentioned in the subsequent method introduction).

According to the preferred embodiment of the present invention, the threaded rod 18 has a wire through hole therein, the observation main unit 1 is electrically connected with the probe 20 through the power data line 2, the power data line 2 passes through the wire through hole to be electrically connected with the light source 21, the camera 22 and the laser emitter, the observation main unit 1 is further connected with the control device of the driving rotating shaft 19 by signals, and the laser emitter is located at the position where the bottom of the probe 20 coincides with the central axis of the driving rotating shaft 19.

In addition, the testing device comprises a cover plate 35 used for being matched with the upper port of the observation tube 6, a round hole 36 is arranged in the center of the upper portion of the cover plate 35, a protruding portion is arranged at the lower end of the cover plate 35, the outer diameter of the protruding portion is equal to the inner diameter of the observation tube 6, after the cover plate 35 is covered on the observation tube 6, the round hole 36 is always located on the central axis of the observation tube 6, and the round hole 36 is used for being aligned and matched with laser emitted by a laser emitter.

The invention also provides a using method of the test device for observing microorganism solidification and vegetation growth, and the using method comprises the following steps:

a. inserting the observation tube 6 into the observation tube groove 8, inserting the partition wall 5 into the partition wall groove 7, fixing the observation tube 6 and the partition wall 5, filling a target soil body in the box body 3 in a layering manner, compacting the target soil body, ensuring that the compactness of the target soil body in each area is the same, and keeping the height of the target soil body consistent with that of the partition wall 5;

b. placing the lower surface of a grouting plate 12 on a soil body, enabling an observation pipe 6 to penetrate through an observation pipe preformed hole 10 in the grouting plate 12, pressing the grouting plate 12 to a target soil body, and enabling a grouting spray head 14 to be pressed into the target soil body;

c. putting the bacterial liquid and the cementing liquid into different slurry tanks 32, opening a grouting pipe switch 13 of a region to be cemented, opening a slurry pump 30, determining the amount of the injected slurry through a flowmeter 31, injecting the bacterial liquid firstly, standing for a period of time, and then injecting the cementing liquid;

d. after grouting, spraying a layer of nutrient soil containing plant seeds on the surface layer of the solidified soil body, placing the solidified soil body in the sunlight and carrying out daily maintenance to ensure the normal growth of plants;

e. after the plant root system starts to grow, the detection equipment 4 is placed at a specified position around the test box, and then the centering and leveling operation of the supporting component is completed;

f. and (3) opening the observation host machine 1, controlling the probe 20 to move downwards to an annular mark of the observation tube 6, wherein the position corresponding to the annular mark is the upper surface of the soil layer, opening a light source 21 and a camera 22 on the probe 20, recording the descending height of the probe 20 from zero by the observation host machine 1 at the moment, and acquiring a required root growth picture through the camera 22 after the probe 20 reaches a specified position.

It should be noted that the present invention can have various changing modes, for example, the plant species sprayed in each area can be the same or different, and when different, the present invention can be used for researching the influence of different curing thicknesses on the growth of different plant roots. In addition, the content of the test which can be carried out by the invention is not limited to the content, and the test of water content, pore water pressure, hardness and the like can also be carried out by adopting the existing method in the process of microorganism curing soil layers and plant planting.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.