阅读说明：本技术 一种适用于冲击地压巷道稳压胶结的注浆锚杆稳压装置 (Slip casting stock voltage stabilizer suitable for rock burst tunnel steady voltage is consolidated ) 是由 李明远 王满 曹淑良 张建国 郑庆学 乔晓纯 胡长岭 于 2021-07-20 设计创作，主要内容包括：本发明涉及注浆稳压技术领域,尤其为一种适用于冲击地压巷道稳压胶结的注浆锚杆稳压装置,包括风管和控制器,所述稳压装置还包括有稳压室、主注浆泵、副注浆泵、浆液室和注浆筒,所述注浆筒的上侧呈圆柱状设置,所述注浆筒的下侧呈圆锥状设置,所述主注浆泵、副注浆泵的动力输入端均与风管通过法兰可拆卸连接,本发明中,通过对风管的出口端增加稳压室,起到稳压的作用,通过主注浆泵和副注浆泵的配合来防止注浆筒内的压力过低,通过对注浆筒增加浆液预留室来防止注浆筒内的压力过高,进一步起到稳压的作用,浆液预留室内多余的浆液还可以自动的回流到浆液室的内侧,从而起到节约的作用,具有很好的实用性。(The invention relates to the technical field of grouting pressure stabilization, in particular to a grouting anchor rod pressure stabilizing device suitable for stabilizing and cementing a roadway with rock burst, which comprises an air pipe and a controller, and further comprises a pressure stabilizing chamber, a main grouting pump, an auxiliary grouting pump, a slurry chamber and a grouting barrel, wherein the upper side of the grouting barrel is arranged in a cylindrical manner, the lower side of the grouting barrel is arranged in a conical manner, the power input ends of the main grouting pump and the auxiliary grouting pump are detachably connected with the air pipe through flanges, in the invention, the pressure stabilizing chamber is added at the outlet end of the air pipe to play a role in stabilizing pressure, the pressure in the grouting barrel is prevented from being too low through the cooperation of the main grouting pump and the auxiliary grouting pump, the slurry reserving chamber is added in the grouting barrel to prevent the pressure in the grouting barrel from being too high, the pressure stabilizing chamber is further played, and redundant slurry in the slurry reserving chamber can automatically flow back to the inner side of the slurry, thereby playing a saving role and having good practicability.)

1. The utility model provides a slip casting stock voltage stabilizer suitable for rock burst tunnel steady voltage is consolidated, includes tuber pipe (1) and controller (12), its characterized in that: the pressure stabilizing device further comprises a pressure stabilizing chamber (2), a main grouting pump (6), an auxiliary grouting pump (5), a slurry chamber (4) and a grouting barrel (7), wherein the upper side of the grouting barrel (7) is in a cylindrical arrangement, the lower side of the grouting barrel (7) is in a conical arrangement, the power input ends of the main grouting pump (6) and the auxiliary grouting pump (5) are detachably connected with the air pipe (1) through flanges, the raw material input ends of the main grouting pump (6) and the auxiliary grouting pump (5) are detachably connected with the slurry chamber (4) through flanges, the raw material output ends of the main grouting pump (6) and the auxiliary grouting pump (5) are detachably connected with the inner side of the top end of the grouting barrel (7) through flanges, an outer sleeve (701) is sleeved outside the grouting barrel (7), a slurry outlet pipe (8) is communicated with the bottom end of the grouting barrel (7), and a slurry reserving chamber (9) is connected with one side of the slurry outlet pipe (8) through a flange, one side of the grouting cylinder (7) is communicated with a pressure valve (10), and the outlet of the pressure valve (10) is communicated with the inlet end of the grout reserving chamber (9).

2. The grouting anchor rod pressure stabilizing device suitable for stabilizing and cementing a rock burst roadway according to claim 1, wherein: the inlet end of the pressure stabilizing chamber (2) is provided with a one-way valve (3), and the inner side of the pressure stabilizing chamber (2) is uniformly provided with a connecting plate (201) connected with the center.

3. The grouting anchor rod pressure stabilizing device suitable for stabilizing and cementing a rock burst roadway according to claim 1, wherein: the precision of the auxiliary grouting pump (5) is 10 times that of the main grouting pump (6).

4. The grouting anchor rod pressure stabilizing device suitable for stabilizing and cementing a rock burst roadway according to claim 1, wherein: the outer collar (701) is uniformly provided with grooves (703), the grooves (703) are symmetrically arranged, a connecting rod (704) is arranged between the two mutually symmetrical grooves (703), and two ends of the connecting rod (704) are fixedly connected with the inner side of the grouting barrel (7).

5. The grouting anchor rod pressure stabilizing device suitable for stabilizing and cementing a rock burst roadway according to claim 1, wherein: the top end of the grouting cylinder (7) is fixedly connected with a pressure sensor (702), and the sensing end of the pressure sensor (702) is arranged on the inner side of the grouting cylinder (7).

6. The grouting anchor rod pressure stabilizing device suitable for stabilizing and cementing a rock burst roadway according to claim 1, wherein: the bottom of thick liquid reserve chamber (9) is the setting of taper type, the bottom intercommunication of thick liquid reserve chamber (9) has fluid-discharge tube (902), the other end of fluid-discharge tube (902) is linked together through the inboard of flange with thick liquid chamber (4).

7. The grouting anchor rod pressure stabilizing device suitable for stabilizing and cementing a rock burst roadway according to claim 8, wherein: the top end of the slurry reserving chamber (9) is fixedly connected with a pneumatic booster pump (901), and the output end of the pneumatic booster pump (901) is communicated with the inner side of the top end of the slurry reserving chamber (9).

8. A grouting anchor rod pressure stabilizing device suitable for stabilizing and cementing a roadway with rock burst according to any one of claims 1 to 7, which is characterized in that: the slurry outlet pipe (8) is provided with a self-operated micro-pressure regulating valve (11).

9. The use method of the grouting anchor rod pressure stabilizing device suitable for stabilizing the pressure cementation of the rock burst roadway according to claim 1 is characterized by comprising the following steps:

step 1: the air pressure inside the air pipe (1) enters the inner side of the pressure stabilizing chamber (2), and the pressure stabilizing chamber (2) plays a role in stabilizing and storing pressure;

step 2: the main grouting pump (6) works to pump the grout inside the grout chamber (4) into the inner side of the grouting cylinder (7);

and step 3:

when the pressure at the inner side of the grouting cylinder (7) is low, the controller (12) controls the auxiliary grouting pump (5) to work, and the work of the auxiliary grouting pump (5) can play a role in pressurizing the inner side of the grouting cylinder (7), so that the pressure stabilizing effect is achieved;

when the pressure inside the grouting cylinder (7) is too high, the pressure valve (10) is automatically opened, and a part of the grout inside the grouting cylinder (7) flows into the inner side of the grout reserving chamber (9) to play a role in reducing pressure;

and 4, step 4: and a grout outlet pipe (8) at the bottom end of the grouting barrel (7) discharges grout to an inlet of the grouting anchor rod.

Technical Field

The invention relates to the technical field of grouting pressure stabilization, in particular to a grouting anchor rod pressure stabilizing device suitable for stabilizing and cementing a rock burst roadway.

Background

A roadway is a channel that is tunneled for mining lifting, transportation, ventilation, drainage, power supply, and the like during underground mining. The cross section of the roadway is mostly in an arch shape, a trapezoid shape or a rectangular shape, and the surrounding rock is soft and is in a round shape, an oval shape or a horseshoe shape.

And (2) pressure-stabilizing cementing, namely, in the grouting construction process of anchor grouting support, aiming at different surrounding rock conditions, gradually diffusing, compacting and condensing grouting slurry in cracks in a rock body through a novel self-fixing, self-sealing and internally self-closing grouting anchor rod, cementing loose and broken surrounding rocks within a reach range into a whole, realizing pressure-stabilizing grouting in the surrounding rock body of the roadway, and reserving slurry with pressure in the surrounding rock body of the roadway to improve the initial support resistance of the surrounding rock, form a slurry cementing reinforcing arch, and construct a shallow part of the surrounding rock into a ring body with the surrounding rock with certain internal stress.

In the process of stabilizing pressure and cementation, the pressure stabilization of the inlet of the grouting anchor rod is a very critical step, the power of the current underground roadway is mainly provided by an air pipe, and the excessive or insufficient use amount of mechanical tools driven by the air pipe can influence the pressure of the inlet of the grouting anchor rod at the same time.

Disclosure of Invention

The invention aims to provide a grouting anchor rod pressure stabilizing device suitable for stabilizing and cementing a roadway with rock burst so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a grouting anchor rod pressure stabilizing device suitable for stabilizing and cementing a roadway with rock burst comprises an air pipe and a controller, and further comprises a pressure stabilizing chamber, a main grouting pump, an auxiliary grouting pump, a slurry chamber and a grouting barrel, wherein the upper side of the grouting barrel is cylindrically arranged, the lower side of the grouting barrel is conically arranged, the power input ends of the main grouting pump and the auxiliary grouting pump are detachably connected with the air pipe through flanges, the raw material input ends of the main grouting pump and the auxiliary grouting pump are detachably connected with the slurry chamber through flanges, the raw material output ends of the main grouting pump and the auxiliary grouting pump are detachably connected with the inner side of the top end of the grouting barrel through flanges, the outer side of the grouting barrel is sleeved with an outer sleeve ring, the bottom end of the grouting barrel is communicated with a slurry outlet pipe, one side of the slurry outlet pipe is further connected with a slurry reserving chamber through a flange, and one side of the grouting barrel is communicated with a pressure valve, the outlet of the pressure valve is communicated with the inlet end of the slurry reserving chamber.

Furthermore, a one-way valve is arranged at the inlet end of the pressure stabilizing chamber, and connecting plates connected at the center are uniformly arranged on the inner side of the pressure stabilizing chamber.

Furthermore, the precision of the auxiliary grouting pump is 10 times that of the main grouting pump.

Further, the outer collar is evenly provided with grooves, the grooves are symmetrically arranged, two mutually symmetrical grooves are provided with connecting rods, and two ends of each connecting rod are fixedly connected with the inner side of the grouting cylinder.

Furthermore, the top end of the grouting cylinder is fixedly connected with a pressure sensor, and the sensing end of the pressure sensor is arranged on the inner side of the grouting cylinder.

Furthermore, the bottom end of the slurry reserving chamber is arranged in a conical shape, the bottom end of the slurry reserving chamber is communicated with a liquid discharge pipe, and the other end of the liquid discharge pipe is communicated with the inner side of the slurry chamber through a flange.

Furthermore, the top end of the slurry reserving chamber is fixedly connected with a pneumatic booster pump, and the output end of the pneumatic booster pump is communicated with the inner side of the top end of the slurry reserving chamber.

Furthermore, a self-operated micro-pressure regulating valve is arranged on the slurry outlet pipe.

A use method of a grouting anchor rod pressure stabilizing device suitable for stabilizing and cementing a rock burst roadway comprises the following steps:

step 1: the air pressure inside the air pipe enters the pressure stabilizing chamber, and the pressure stabilizing chamber plays a role in stabilizing and storing pressure;

step 2: the main grouting pump works to pump the grout inside the grout chamber into the inner side of the grouting barrel;

and step 3:

(1) when the pressure at the inner side of the grouting cylinder is low, the controller controls the auxiliary grouting pump to work, and the work of the auxiliary grouting pump can play a role in pressurizing the inner side of the grouting cylinder, so that the pressure stabilizing effect is achieved;

(2) when the pressure inside the grouting cylinder is too high, the pressure valve is automatically opened, and a part of grout inside the grouting cylinder flows into the inner side of the grout reserving chamber to play a role in reducing pressure;

and 4, step 4: and the grout outlet pipe at the bottom end of the grouting barrel discharges grout to the inlet of the grouting anchor rod.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the pressure stabilizing chamber is additionally arranged at the outlet end of the air pipe to play a role in stabilizing pressure, the pressure in the grouting cylinder is prevented from being too low through the matching of the main grouting pump and the auxiliary grouting pump, the pressure in the grouting cylinder is prevented from being too high through the addition of the slurry reserving chamber to the grouting cylinder, the pressure stabilizing effect is further played, redundant slurry in the slurry reserving chamber can automatically flow back to the inner side of the slurry chamber, so that the saving effect is achieved, and the practicability is good;

2. according to the invention, the connecting plate is additionally arranged on the inner side of the pressure stabilizing chamber to play a role in increasing the structural stability, the outer sleeve and the groove are additionally arranged on the outer side of the grouting cylinder, when the grouting cylinder needs to be cleaned by water, an external tool is used for knocking the groove, the grouting cylinder generates vibration to play a role in increasing the cleaning effect, and the connecting rod is additionally arranged in the grouting cylinder to play a role in increasing the structural stability on one hand, expand the vibration range generated by knocking on the other hand, further play a role in facilitating cleaning and have good practicability.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure of the grouting barrel of the invention;

FIG. 3 is a schematic view of the mounting structure shown at A in FIG. 2 according to the present invention;

FIG. 4 is a schematic view of the internal cross-sectional mounting structure of the plenum of the present invention;

fig. 5 is a schematic view of the internal cross-sectional installation structure of the grouting barrel of the invention.

In the figure: 1. an air duct; 2. a plenum; 201. a connecting plate; 3. a one-way valve; 4. a slurry chamber; 5. an auxiliary grouting pump; 6. a main grouting pump; 7. a grouting cylinder; 701. an outer collar; 702. a pressure sensor; 703. a groove; 704. a connecting rod; 8. a pulp outlet pipe; 9. a slurry reserve chamber; 901. a pneumatic booster pump; 902; a liquid discharge pipe; 10. a pressure valve; 11. self-operated micro-pressure regulating valve; 12. and a controller.

Detailed Description

Referring to fig. 1-5, the present invention provides a technical solution:

a grouting anchor rod pressure stabilizing device suitable for stabilizing and cementing a roadway with rock burst comprises an air pipe 1 and a controller 12, and further comprises a pressure stabilizing chamber 2, a main grouting pump 6, an auxiliary grouting pump 5, a slurry chamber 4 and a grouting cylinder 7, wherein the upper side of the grouting cylinder 7 is cylindrically arranged, the lower side of the grouting cylinder 7 is conically arranged, the power input ends of the main grouting pump 6 and the auxiliary grouting pump 5 are detachably connected with the air pipe 1 through flanges, the raw material input ends of the main grouting pump 6 and the auxiliary grouting pump 5 are detachably connected with the slurry chamber 4 through flanges, the raw material output ends of the main grouting pump 6 and the auxiliary grouting pump 5 are detachably connected with the inner side of the top end of the grouting cylinder 7 through flanges, the outer sleeve 701 is sleeved outside the grouting cylinder 7, the bottom end of the grouting cylinder 7 is communicated with a slurry outlet pipe 8, one side of the slurry outlet pipe 8 is further connected with a slurry chamber 9 through a flange, one side of the grouting cylinder 7 is communicated with a pressure valve 10, the exit of pressure valve 10 is linked together with the entry end of thick liquid reservation chamber 9, exit end through to tuber pipe 1 increases surge chamber 2, play the effect of steady voltage, the cooperation through main grouting pump 6 and vice grouting pump 5 prevents that the pressure in a grouting section of thick bamboo 7 is low excessively, prevent the pressure in a grouting section of thick bamboo 7 too high through increasing thick liquid reservation chamber 9 to a grouting section of thick bamboo 7, further play the effect of steady voltage, unnecessary thick liquid can also automatic the inboard of flowing back thick liquid room 4 in the thick liquid reservation chamber 9, thereby play the effect of saving, and has good practicality.

The inlet end of the pressure stabilizing chamber 2 is provided with a one-way valve 3, the inner side of the pressure stabilizing chamber 2 is uniformly provided with a connecting plate 201 connected at the center, the one-way valve 3 can prevent the pressure inside the pressure stabilizing chamber 2 from flowing to the air pipe 1, and the arranged connecting plate plays a role in improving the structural stability;

the precision of the auxiliary grouting pump 5 is 10 times that of the main grouting pump 6, and the arrangement can better play a role in stabilizing pressure and reduce pressure fluctuation;

the outer collar 701 is uniformly provided with grooves 703, the grooves 703 are symmetrically arranged, a connecting rod 704 is arranged between the two mutually symmetrical grooves 703, two ends of the connecting rod 704 are fixedly connected with the inner side of the grouting cylinder 7, the outer collar 701 and the grooves 703 are additionally arranged on the outer side of the grouting cylinder 7, when the grouting cylinder 7 needs to be cleaned by water, an external tool is used for beating the grooves 703, the grouting cylinder 7 generates vibration to increase the cleaning effect, the connecting rod 704 is internally arranged, on one hand, the structural stability can be increased, on the other hand, the vibration range generated by beating can be enlarged, the cleaning convenience is further realized, and the practicability is good;

the top end of the grouting cylinder 7 is fixedly connected with a pressure sensor 702, the sensing end of the pressure sensor 702 is arranged on the inner side of the grouting cylinder 7, and the arranged pressure sensor 702 is used for monitoring the pressure inside the grouting cylinder 7 in real time;

the bottom end of the slurry reserving chamber 9 is arranged in a conical shape, the bottom end of the slurry reserving chamber 9 is communicated with a liquid discharge pipe 902, the other end of the liquid discharge pipe 902 is communicated with the inner side of the slurry chamber 4 through a flange, and the arrangement is convenient for discharging redundant slurry because the liquid is under the action of gravity;

the top end of the slurry reserving chamber 9 is fixedly connected with a pneumatic booster pump 901, the output end of the pneumatic booster pump 901 is communicated with the inner side of the top end of the slurry reserving chamber 9, and the pneumatic booster pump 901 facilitates the backflow of the residual slurry;

the slurry outlet pipe 8 is provided with a self-operated micro-pressure regulating valve 11, and the self-operated micro-pressure regulating valve 11 can be automatically closed when the pressure is too high, so that the function of protecting the pressure from being too high is achieved.

The use method of the grouting anchor rod pressure stabilizing device suitable for stabilizing and cementing the roadway with the rock burst is characterized by comprising the following steps of:

step 1: the air pressure inside the air pipe 1 enters the pressure stabilizing chamber 2, and the pressure stabilizing chamber 2 plays a role in stabilizing and storing pressure;

step 2: the main grouting pump 6 works to pump the grout inside the grout chamber 4 into the inner side of the grouting cylinder 7;

and step 3:

(1) when the pressure inside the grouting cylinder 7 is low, the controller 12 controls the auxiliary grouting pump 5 to work, and the work of the auxiliary grouting pump 5 can play a role in pressurizing the inside of the grouting cylinder 7, so that the pressure stabilizing effect is achieved;

(2) when the pressure inside the grouting cylinder 7 is too high, the pressure valve 10 is automatically opened, and a part of the grout inside the grouting cylinder 7 flows into the inner side of the grout reserving chamber 9 to play a role in reducing pressure;

and 4, step 4: and a grout outlet pipe 8 at the bottom end of the grouting barrel 7 discharges grout to an inlet of the grouting anchor rod.

The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.