阅读说明：本技术 一种用于城镇社区的浅层地热能利用系统及其施工方法 (Shallow geothermal energy utilization system for town community and construction method thereof ) 是由 谢齐远 李锐 董红艳 唐家波 曹俊 浮羽 任梦楠 张永宽 连丽 豆志远 于 2021-07-29 设计创作，主要内容包括：本发明公开了一种用于城镇社区的浅层地热能利用系统的施工方法,包括坑基,坑基由下至上依次设置有底板、第一土层、管排、第一隔离层、第二土层、第二隔离层和第三土层；管排形成一个环路并与垂直地埋换热器连接,并利用隔离层铺设装置对第一隔离层进行铺设,相邻的第二隔离层之间通过横板和螺钉进行固定。本发明通过设置浅层地热能利用系统,能够对资源利用最大化,符合节能环保的要求,且利用该方法施工,减少施工中材料的受损率,延长了使用寿命；通过利用隔离层铺设装置施工,使铺设出来的土工膜平整、美观,且减轻了公人员的负担,使用方便,操作简单。(The invention discloses a construction method of a shallow geothermal energy utilization system for an urban community, which comprises a pit foundation, wherein the pit foundation is sequentially provided with a bottom plate, a first soil layer, a pipe row, a first isolation layer, a second soil layer, a second isolation layer and a third soil layer from bottom to top; the tube bank forms a loop and is connected with the vertical buried heat exchanger, the first isolation layer is paved by the isolation layer paving device, and the adjacent second isolation layers are fixed through transverse plates and screws. By arranging the shallow geothermal energy utilization system, the resource utilization can be maximized, the requirements of energy conservation and environmental protection are met, the damage rate of materials in construction is reduced and the service life is prolonged by utilizing the method for construction; through utilizing the construction of isolation layer laying device, make the geomembrane of laying out level and smooth, pleasing to the eye, and alleviateed public personnel's burden, convenient to use, easy operation.)

1. A shallow geothermal energy utilization system for town communities comprises a pit foundation (A), and is characterized in that: the pit foundation (A) is sequentially provided with a bottom plate (1), a first soil layer (2), a pipe row (3), a first isolation layer (4), a second soil layer (5), a second isolation layer (6) and a third soil layer (7) from bottom to top; the tube bank (3) forms a loop and is connected to a vertically buried heat exchanger.

2. Shallow geothermal energy utilization system for town communities according to claim 1, characterized in that: the thicknesses of the first soil layer (22), the second soil layer (5) and the third soil layer (7) are all 10 cm.

3. Shallow geothermal energy utilization system for town communities according to claim 1, characterized in that: the first isolation layer (4) is a geomembrane, and the second isolation layer (6) is an isolation net.

4. The construction method of the shallow geothermal energy utilization system for the town communities as claimed in claims 1-3, characterized by comprising the following steps:

A. construction preparation:

erecting a drilling machine, determining a punching position, and excavating a foundation;

secondly, preparing pipe laying while drilling, and performing a hydrostatic test on the heat exchange pipe before laying the heat exchange pipe; when the pipe is arranged, the heat exchange pipe needs to be filled with water and keeps a certain pressure, and the pipe arranging speed is uniform; after the heat exchange tube is positioned at a lower channel, 1.5m of heat exchange tube is required to be reserved on the bottom surface;

thirdly, backfilling the heat exchange pipe by adopting a reverse grouting mode, injecting filler from the bottom of the drill hole, and reversely filling upwards to gradually remove air so as to ensure that no backfilling gap exists;

B. construction of the horizontal tube bank:

firstly, excavating a pit foundation (A) outdoors, and positioning and paying off a pipe drainage ditch before excavating;

secondly, after the excavation is finished, cleaning the bottom of the groove, carrying out manual tamping operation, and paving a bottom plate (1) at the bottom of the groove after the bottom of the groove is finished and leveled;

thirdly, after the bottom plate (1) is laid, filling a first soil layer (2) on the bottom plate (1), wherein the thickness of the first soil layer (2) is 10cm, and performing manual tamping operation after filling;

fourthly, laying a tube bank (3) above the first soil layer (2), and connecting the tube bank (3) with a heat exchange tube;

paving the geomembrane above the tube bank by using the isolation layer paving device, adjusting the position of the first screw rod on the U-shaped frame before using, and respectively fixing two ends of the rolled geomembrane on the two second screw rods, so as to prevent the bottom of the geomembrane from being pressed on the tube bank and ensure that the distance between the tube bank and the bottom of the geomembrane is 6-10 cm;

after the geomembrane is fixed on the supporting assembly, placing the end part of the geomembrane outside the left end of the pit foundation A, extending the geomembrane out of the left end of the pit foundation A by a distance of 10cm-20cm, and tightly pressing the extending part through bricks; moving the base along the displacement plate to enable the distance between the vertical rod and the U-shaped frame 7 to be 10cm, and moving the inclined rod according to the positions of the outer parts of the two sides of the pipe row to enable the roller at the bottom of the inclined rod to be positioned between the outer side of the pipe row and the inner wall of the pit base; adjusting the position of the third screw on the first transverse plate to enable the bottom of the pressing plate to be pressed above the geomembrane, and after the adjustment is finished, a worker can hold the inserting rod by hand to lay the geomembrane;

seventhly, after the geomembrane is paved, paving a second soil layer above the geomembrane, wherein the paving thickness is 10cm, and after the geomembrane is filled, carrying out manual tamping operation;

eighthly, after the second soil layer is paved, paving an isolation net above the second soil layer, and arranging transverse plates and screws for fixing the isolation net in the pit bases on two sides of the isolation net at intervals of 5 cm;

ninthly, after the isolation net is laid, laying a third soil layer, wherein the thickness of the third soil layer is 10cm, and manual tamping operation is carried out after filling is finished.

5. The construction method of the shallow geothermal energy utilization system for town communities as claimed in claim 4, wherein: the isolation layer laying device comprises two bases, a displacement plate and a U-shaped frame, wherein the two bases are distributed in an L shape and are symmetrically distributed on two sides of the pit base; the bottom of each base is provided with a roller, each sliding rod on each base is connected with a displacement plate, an L-shaped distributed connecting plate is arranged between the left ends of the two displacement plates, two support rods are vertically arranged on the bottom plate of the connecting plate, a connecting column is arranged between the tops of the two support rods, a pressing assembly is arranged on the connecting column, and the pressing assembly consists of an inclined rod, a vertical rod, a sleeve, a first transverse plate and a second transverse plate; a U-shaped frame is arranged on the base on the right side of the pressing assembly, two first screw rods are inserted into the top of the U-shaped frame, and the first screw rods are fixed with the U-shaped frame through first nuts; the bottom of every first screw rod is provided with supporting component respectively, and supporting component comprises first riser and second screw rod.

6. The construction method of the shallow geothermal energy utilization system for town communities as claimed in claim 5, wherein: a vertical plate of the connecting plate is provided with a first rectangular through hole; the positions of the two supporting rods respectively correspond to the positions of two ends of the U-shaped frame, and the two ends of the U-shaped frame are respectively fixedly connected with the middle position of the top of the base; the outer side surface and the bottom surface of the base are respectively provided with a first groove and a second groove, the upper end of the displacement plate is connected with the first groove in a sliding mode, the lower end of the displacement plate is connected with the second groove in a sliding mode, the left end of the displacement plate is provided with two second vertical plates, rollers are arranged between the bottoms of the two second vertical plates, the displacement plate and the base are fixed together through bolts, and the bolts are located on the left side of the top of the base; the left end of each inclined rod is sleeved on the connecting column, and the connecting columns on the two sides of each inclined rod are provided with matched second nuts through threads; a vertical rod is arranged at the bottom of the right end of each inclined rod, the inclined rods and the vertical rods form an included angle of 135 degrees, and the vertical rods and the pit foundation are vertically distributed; the bottom of each vertical rod is sleeved with a sleeve, the sleeves are fixed with the vertical rods through bolts, and the bottom of each sleeve is provided with a roller; a first transverse plate is arranged at the top of the inner side of each sleeve respectively, and the first transverse plates and the vertical rods are distributed vertically; a third screw rod is vertically inserted into the end part of each first transverse plate and fixed with the first transverse plates through a third nut, and a pressing plate is arranged at the bottom of each third screw rod; the number of the vertical rods is two, an inserting rod is inserted between the tops of the two vertical rods, and two ends of the inserting rod are respectively positioned on the outer side of the base; the two first vertical rods are located at positions between inner walls of two sides of the pit foundation, a first vertical plate is fixedly connected to the bottom of each first vertical rod, a second screw rod is connected to each first vertical plate through threads, and a second bolt penetrates through the side face of each first vertical plate.

The technical field is as follows:

the invention relates to a geothermal energy circulating system and a construction method of the system, in particular to a shallow geothermal energy utilization system for urban communities and a construction method of the system.

Background art:

in the construction of modern cities and towns community, the utilization underground space and the community afforestation of big limit are than great, the earth's surface earthing is thicker in the community afforestation within range, the earth's surface is compared to deep soil temperature comparatively invariable, and winter, summer is great with the earth's surface temperature difference, many communities all develop the shallow geothermal energy of within range now, when carrying out shallow geothermal energy construction, generally can be when the backfill soil of community afforestation within range, install horizontal bank of tubes additional and be used for the exchange of shallow geothermal energy, but can have a shortcoming when current horizontal heat transfer pipeline is under construction: because the plant root of shallow layer can cause the destruction to the bank of tubes that the level laid, we have add the isolation layer above the bank of tubes, add promptly and establish the geomembrane, because the space is limited between bank of tubes and the hole base inner wall, when laying the geomembrane, the staff can't stand and carry out laying of geomembrane or carry out the later stage arrangement to the part of geomembrane in the hole base, and current geomembrane is roll-shaped distribution, and bulky, heavy weight, when laying, need two staff to hold the geomembrane and stand and lay in bank of tubes both sides, the construction is careless slightly, can make the geomembrane tenesmus, still can cause the condition of extrusion damage to the bank of tubes.

The invention content is as follows:

the technical problem to be solved by the invention is as follows: the construction method of the shallow geothermal energy utilization system for the town community overcomes the defects of the prior art, avoids damage to the pipe banks caused by improper construction, improves the construction quality and reduces the burden of workers.

The technical scheme adopted by the invention for solving the technical problem is as follows:

a shallow geothermal energy utilization system for urban communities comprises a pit foundation, wherein the pit foundation is sequentially provided with a bottom plate, a first soil layer, a pipe array, a first isolation layer, a second soil layer, a second isolation layer and a third soil layer from bottom to top; the tube bank forms a loop and is connected to a vertically buried heat exchanger.

The tube bank forms a loop and is connected to a vertically buried heat exchanger.

The first isolation layer is a geomembrane, and the second isolation layer is an isolation net.

The construction method of the shallow geothermal energy utilization system for the town community specifically comprises the following steps:

A. construction preparation:

erecting a drilling machine, determining a punching position, and excavating a foundation;

secondly, preparing pipe laying while drilling, and performing a hydrostatic test on the heat exchange pipe before laying the heat exchange pipe; when the pipe is arranged, the heat exchange pipe needs to be filled with water and keeps a certain pressure, and the pipe arranging speed is uniform; after the heat exchange tube is positioned at a lower channel, 1.5m of heat exchange tube is required to be reserved on the bottom surface;

thirdly, backfilling the heat exchange pipe by adopting a reverse grouting mode, injecting filler from the bottom of the drill hole, and reversely filling upwards to gradually remove air so as to ensure that no backfilling gap exists;

B. construction of the horizontal tube bank:

firstly, excavating a pit foundation outdoors, and positioning and paying off a pipe drainage ditch before excavating;

after the excavation is finished, cleaning the bottom of the groove, carrying out manual tamping operation, and laying a bottom plate at the bottom of the groove after the bottom of the groove is finished and leveled;

thirdly, after the bottom plate is laid, filling a first soil layer on the bottom plate, wherein the thickness of the first soil layer is 10cm, and performing manual tamping operation after filling;

fourthly, laying a tube bank above the first soil layer, and connecting the tube bank with the heat exchange tube;

paving the geomembrane above the tube bank by using the isolation layer paving device, adjusting the position of the first screw rod on the U-shaped frame before using, and respectively fixing two ends of the rolled geomembrane on the two second screw rods, so as to prevent the bottom of the geomembrane from being pressed on the tube bank and ensure that the distance between the tube bank and the bottom of the geomembrane is 6-10 cm;

after the geomembrane is fixed on the supporting assembly, placing the end part of the geomembrane outside the left end of the pit foundation A, extending the geomembrane out of the left end of the pit foundation A by a distance of 10cm-20cm, and tightly pressing the extending part through bricks; moving the base along the displacement plate to enable the distance between the vertical rod and the U-shaped frame 7 to be 10cm, and moving the inclined rod according to the positions of the outer parts of the two sides of the pipe row to enable the roller at the bottom of the inclined rod to be positioned between the outer side of the pipe row and the inner wall of the pit base; adjusting the position of the third screw on the first transverse plate to enable the bottom of the pressing plate to be pressed above the geomembrane, and after the adjustment is finished, a worker can hold the inserting rod by hand to lay the geomembrane;

seventhly, after the geomembrane is paved, paving a second soil layer above the geomembrane, wherein the paving thickness is 10cm, and after the geomembrane is filled, carrying out manual tamping operation;

eighthly, after the second soil layer is paved, paving an isolation net above the second soil layer, and arranging a transverse plate and a screw at intervals of 5cm in pit bases on two sides of the isolation net for fixing the isolation net;

ninthly, after the isolation net is laid, laying a third soil layer, wherein the thickness of the third soil layer is 10cm, and manual tamping operation is carried out after filling is finished.

The isolation layer laying device comprises two bases, a displacement plate and a U-shaped frame, wherein the two bases are distributed in an L shape and are symmetrically distributed on two sides of the pit base; the bottom of each base is provided with a roller, each sliding rod on each base is connected with a displacement plate, an L-shaped distributed connecting plate is arranged between the left ends of the two displacement plates, two support rods are vertically arranged on the bottom plate of the connecting plate, a connecting column is arranged between the tops of the two support rods, a pressing assembly is arranged on the connecting column, and the pressing assembly consists of an inclined rod, a vertical rod, a sleeve, a first transverse plate and a second transverse plate; a U-shaped frame is arranged on the base on the right side of the pressing assembly, two first screw rods are inserted into the top of the U-shaped frame, and the first screw rods are fixed with the U-shaped frame through first nuts; the bottom of every first screw rod is provided with supporting component respectively, and supporting component comprises first riser and second screw rod.

A vertical plate of the connecting plate is provided with a first rectangular through hole; the positions of the two supporting rods respectively correspond to the positions of two ends of the U-shaped frame, and the two ends of the U-shaped frame are respectively fixedly connected with the middle position of the top of the base; the outer side surface and the bottom surface of the base are respectively provided with a first groove and a second groove, the upper end of the displacement plate is connected with the first groove in a sliding mode, the lower end of the displacement plate is connected with the second groove in a sliding mode, the left end of the displacement plate is provided with two second vertical plates, rollers are arranged between the bottoms of the two second vertical plates, the displacement plate and the base are fixed together through bolts, and the bolts are located on the left side of the top of the base; the left end of each inclined rod is sleeved on the connecting column, and the connecting columns on the two sides of each inclined rod are provided with matched second nuts through threads; a vertical rod is arranged at the bottom of the right end of each inclined rod, the inclined rods and the vertical rods form an included angle of 135 degrees, and the vertical rods and the pit foundation are vertically distributed; the bottom of each vertical rod is sleeved with a sleeve, the sleeves are fixed with the vertical rods through bolts, and the bottom of each sleeve is provided with a roller; a first transverse plate is arranged at the top of the inner side of each sleeve respectively, and the first transverse plates and the vertical rods are distributed vertically; a third screw rod is vertically inserted into the end part of each first transverse plate and fixed with the first transverse plates through a third nut, and a pressing plate is arranged at the bottom of each third screw rod; the number of the vertical rods is two, an inserting rod is inserted between the tops of the two vertical rods, and two ends of the inserting rod are respectively positioned on the outer side of the base; the two first vertical rods are located at positions between inner walls of two sides of the pit foundation, a first vertical plate is fixedly connected to the bottom of each first vertical rod, a second screw rod is connected to each first vertical plate through threads, and a second bolt penetrates through the side face of each first vertical plate.

The invention has the following positive beneficial effects:

1. according to the invention, the first isolation layer and the second isolation layer are arranged above the tube bank, so that the damage of vegetation to the tube bank can be avoided; meanwhile, the isolation layer laying device is used for construction, so that the efficiency of laying the geomembrane is improved, and the geomembrane is attractive and elegant.

2. The shallow geothermal energy utilization system can maximize the utilization of resources, meets the requirements of energy conservation and environmental protection, reduces the damage rate of parts during construction and prolongs the service life by utilizing the method for construction.

3. By arranging the supporting assembly, when the device is used, the rolled geomembrane is fixed on the second screw and is matched with the pressing plate, so that the geomembrane can be quickly laid, and the laid geomembrane can be very flat; fix through first nut through two first screw rods, during the use, according to the position of bank of tubes, adjust the distance between geomembrane and the bank of tubes at any time, crush the bank of tubes when avoiding the geomembrane construction.

4. The left end of the diagonal rod is fixed through the second nut, when the diagonal rod is used, the position of the diagonal rod is freely adjusted according to the positions of two sides of the geomembrane, the position between the pressing plate and the geomembrane is adjusted according to the position of the pipe bank, a worker lays the geomembrane while laying the geomembrane, the geomembrane is flatly laid above the pipe bank as far as possible by using the pressing plate, the condition that wrinkles appear during laying is avoided, and the worker does not need to drag and adjust the geomembrane at a later stage.

Description of the drawings:

FIG. 1 is a schematic view of the inside structure of a pit base according to the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a schematic view of a portion of the hold-down assembly of the present invention;

FIG. 4 is a schematic structural view of a displacement plate according to the present invention;

FIG. 5 is a left side view of FIG. 4;

fig. 6 is a schematic structural diagram of the base of the present invention.

Wherein, 1-bottom plate, 2-first soil layer, 3-tube row, 4-first isolation layer, 5-second soil layer, 6-second isolation layer, 7-third soil layer, 8-base, 801-first groove, 802-second groove, 9-displacement plate, 10-roller, 11-connecting plate, 11-1 first rectangular through hole, 12-bolt, 13-supporting rod, 14-connecting column, 15-diagonal rod, 16-second nut, 18-vertical rod, 19-inserted rod, 20-sleeve, 21-U-shaped frame, 22-first screw rod, 23-first nut, 24-first vertical plate, 25-second screw rod, 26-first transverse plate, 27-pressing plate, 28-third bolt, 29-third nut, 30-second riser.

The specific implementation mode is as follows:

the invention will be further explained and explained with reference to the drawings, in which:

example 1: referring to fig. 1, a shallow geothermal energy utilization system for urban communities comprises a pit foundation a, wherein the pit foundation a is sequentially provided with a bottom plate 1, a first soil layer 2, a pipe row 3, a first isolation layer 4, a second soil layer 5, a second isolation layer 6 and a third soil layer 7 from bottom to top; the thicknesses of the first soil layer 22, the second soil layer 5 and the third soil layer 7 are all 10 cm; the tube bank 3 forms a loop and is connected with the vertical buried heat exchanger; the first isolation layer 4 is a geomembrane and the second isolation layer 6 is an isolation net.

Example 2: referring to fig. 2 to 6, the construction method of the shallow geothermal energy utilization system for the town community specifically includes the following steps:

A. construction preparation:

erecting a drilling machine, determining a punching position, and excavating a foundation;

secondly, preparing pipe laying while drilling, and performing a hydrostatic test on the heat exchange pipe before laying the heat exchange pipe; when the pipe is arranged, the heat exchange pipe needs to be filled with water and keeps a certain pressure, and the pipe arranging speed is uniform; after the heat exchange tube is positioned at a lower channel, 1.5m of heat exchange tube is required to be reserved on the bottom surface;

thirdly, backfilling the heat exchange pipe by adopting a reverse grouting mode, injecting filler from the bottom of the drill hole, and reversely filling upwards to gradually remove air so as to ensure that no backfilling gap exists;

B. the method comprises the following specific operation steps:

firstly, excavating a pit foundation A outdoors, and positioning and paying off a pipe drainage ditch before excavating;

after the excavation is finished, cleaning the bottom of the groove, carrying out manual tamping operation, and laying a bottom plate 1 at the bottom of the groove after the bottom of the groove is finished and leveled;

thirdly, after the bottom plate 1 is laid, filling a first soil layer 2 on the bottom plate 1, wherein the thickness of the first soil layer 2 is 10cm, and performing manual tamping operation after filling;

fourthly, laying a tube bank 3 above the first soil layer 2, and connecting the tube bank 3 with a heat exchange tube;

paving the geomembrane above the tube bank by using the isolation layer paving device, adjusting the position of the first screw rod on the U-shaped frame before using, and respectively fixing two ends of the rolled geomembrane on the two second screw rods, so as to prevent the bottom of the geomembrane from being pressed on the tube bank and ensure that the distance between the tube bank and the bottom of the geomembrane is 6-10 cm;

after the geomembrane is fixed on the supporting assembly, placing the end part of the geomembrane outside the left end of the pit foundation A, extending the geomembrane out of the left end of the pit foundation A by a distance of 10cm-20cm, and tightly pressing the extending part through bricks; moving the base along the displacement plate to enable the distance between the vertical rod and the U-shaped frame 7 to be 10cm, and moving the inclined rod according to the positions of the outer parts of the two sides of the pipe row to enable the roller at the bottom of the inclined rod to be positioned between the outer side of the pipe row and the inner wall of the pit base; adjusting the position of the third screw on the first transverse plate to enable the bottom of the pressing plate to be pressed above the geomembrane, and after the adjustment is finished, a worker can hold the inserting rod by hand to lay the geomembrane;

seventhly, after the geomembrane is paved, paving a second soil layer above the geomembrane, wherein the paving thickness is 10cm, and after the geomembrane is filled, carrying out manual tamping operation;

eighthly, after the second soil layer is paved, paving an isolation net above the second soil layer, and arranging a screw at intervals of 5cm in pit bases on two sides of the isolation net for fixing the isolation net;

ninthly, after the isolation net is laid, laying a third soil layer, wherein the thickness of the third soil layer is 10cm, and manual tamping operation is carried out after filling is finished.

The isolation layer laying device comprises two bases, a displacement plate and a U-shaped frame, wherein the two bases are distributed in an L shape and are symmetrically distributed on two sides of the pit base; the bottom of each base is provided with a roller, each sliding rod on each base is connected with a displacement plate, an L-shaped distributed connecting plate is arranged between the left ends of the two displacement plates, two support rods are vertically arranged on the bottom plate of the connecting plate, a connecting column is arranged between the tops of the two support rods, a pressing assembly is arranged on the connecting column, and the pressing assembly consists of an inclined rod, a vertical rod, a sleeve, a first transverse plate and a second transverse plate; a U-shaped frame is arranged on a base on the right side of the pressing assembly, two first screw rods are inserted into the top of the U-shaped frame, and the first screw rods are fixed with the U-shaped frame through first nuts; the bottom of each first screw rod is provided with a supporting component respectively, and the supporting component comprises a first vertical plate and a second screw rod.

A vertical plate of the connecting plate is provided with a first rectangular through hole; the positions of the two supporting rods respectively correspond to the positions of two ends of the U-shaped frame, and the two ends of the U-shaped frame are respectively fixedly connected with the middle position of the top of the base; the outer side surface and the bottom surface of the base are respectively provided with a first groove and a second groove, the upper end of the displacement plate is connected with the first groove in a sliding manner, the lower end of the displacement plate is connected with the second groove in a sliding manner, the left end of the displacement plate is provided with two second vertical plates, a roller is arranged between the bottoms of the two second vertical plates, the displacement plate and the base are fixed together through a bolt, and the bolt is positioned at the position on the left side of the top of the base; the left end of each inclined rod is sleeved on the connecting column, and the connecting columns on the two sides of each inclined rod are provided with matched second nuts through threads; a vertical rod is arranged at the bottom of the right end of each inclined rod, the inclined rods and the vertical rods form an included angle of 135 degrees, and the vertical rods and the pit foundation are vertically distributed; the bottom of each vertical rod is sleeved with a sleeve, the sleeves are fixed with the vertical rods through bolts, and the bottom of each sleeve is provided with a roller; the top of the inner side of each sleeve is provided with a first transverse plate, and the first transverse plates and the vertical rods are vertically distributed; third screw rods are vertically inserted into the end parts of the first transverse plates respectively and fixed with the first transverse plates through third nuts, and pressing plates are arranged at the bottoms of the third screw rods respectively; the number of the vertical rods is two, an inserting rod is inserted between the tops of the two vertical rods, and two ends of the inserting rod are respectively positioned on the outer sides of the bases; two first montants are located the position department between the pit foundation both sides inner wall, at the bottom of every first montant fixedly connected with riser respectively, have the second screw rod through threaded connection respectively on every riser, and the second bolt runs through the side of riser.

In the above description, the first screws 8 above and below the top of the U-shaped frame 7 are respectively provided with the first nuts 9.

In the above description, the roller at the bottom of the left end of the displacement plate is displaced on the same horizontal plane as the roller at the bottom of the base.

In the above description, the pit foundation a is a well-laid pipe row.

In the above description, the lengths of the two pressing plates are determined according to the width of the pit base, and the distance between the inner ends of the two pressing plates is 7-10 cm.

In the above description, when in use, the position of the sleeve 20 on the vertical rod is adjusted according to the depth of the pit foundation, so that the pipe wheel at the bottom of the sleeve is positioned at the bottom of the foundation pit, and the functions of supporting and facilitating movement are achieved; when the device is used, a worker only needs to hold the inserted bar by hands to push the device to move.

When laying the geomembrane, the base removes along the foundation both sides, through the removal of base, makes the geomembrane begin to lay, and when laying, the clamp plate is pressed in the top of the geomembrane of bank of tubes top, makes the geomembrane of laying be in the state of leveling no fold, and the clamp plate is apart from the distance between the U type frame, adjusts through the removal of displacement board and base, and the back is fixed through the bolt after the adjustment finishes.

In the construction before, the staff often need hold the geomembrane of lapping and lay, waste time and energy, and need two staff to stand in the hole base of bank of tubes both sides, walk and accomplish and lay, careless a little, the staff still can step on the bank of tubes with both feet, thereby cause the damage to the bank of tubes, treat that the geomembrane is laid and finish the back, the staff still needs to draw the geomembrane level by stage, in order to satisfy the construction requirement, because if the condition of big fold appears in the geomembrane, can influence laying of soil layer, the soil layer of fold department can be in fluffy state, thereby construction quality has been influenced.

In the above description, the overlapping size between adjacent separation nets is 10cm, and the overlapping junction is bound by iron wires, then a transverse plate is arranged at the overlapping position, and a screw is driven into the transverse plate, so that the screw is inserted into the soil layer to fix the transverse plate.

In the above description, the backfill mode adopts reverse pulp backfill, and in actual operation, the following steps can be adopted: the backfill mode is manually filled into the drill hole slowly from the periphery of the drill hole, water is intermittently injected into the drill hole while backfilling, a dense filling chamber in the drill hole is ensured as much as possible, but the backfill is difficult to ensure because a large amount of air and slurry exist in the drill hole, and multiple times of supplement is required after the backfill is finished for the first time; secondly, backfilling primary pulp: after finishing a pore-forming, when the next drilling is carried out, circulating slurry flows through the pore-forming hole of the last pipe, precipitates in the slurry circulation process can be precipitated in the pore-forming hole, and the surface layer can not be filled up and the part can be tightly filled up by adopting backfill materials.

By arranging the shallow geothermal energy utilization system, the resource utilization can be maximized, the requirements of energy conservation and environmental protection are met, the damage rate of materials in construction is reduced and the service life is prolonged by utilizing the method for construction; through utilizing the construction of isolation layer laying device, make the geomembrane of laying out level and smooth, pleasing to the eye, and alleviateed public personnel's burden, convenient to use, easy operation.