CN216240675U

CN216240675U - Sectional type tunnel sealing grouting device

Info

Publication number: CN216240675U
Application number: CN202122791611.0U
Authority: CN
Inventors: 刘亚超; 武龙建; 李迎富
Original assignee: Anhui University of Science and Technology
Current assignee: Anhui University of Science and Technology
Priority date: 2021-11-15
Filing date: 2021-11-15
Publication date: 2022-04-08
Anticipated expiration: 2031-11-15

Abstract

The utility model relates to the technical field of mine roadways, in particular to a sectional roadway sealing grouting device, which comprises a grouting pipe, wherein one end of the grouting pipe is connected with a pressure pump, the other end part of the grouting pipe is sealed by a conical head end cover in threaded connection, a grouting pipe communicated with the pressure pump is arranged in an inner cavity of the middle section of the grouting pipe, a plurality of groups of expansion type sealing devices which are linearly distributed are arranged on the outer wall of the grouting pipe, a plurality of groups of safety valves positioned between the adjacent sealing devices are connected on the grouting pipe, the input end of each safety valve is elastically connected with a folding pipe, a pair of extension pipes which are symmetrical in the front-back direction and are communicated with the outer side of the grouting pipe is arranged on each folding pipe, and the sectional roadway sealing grouting device has the advantages that: through adopting sectional type and modular slip casting mode, long section slip casting is decomposed, realizes single one section segmentation slip casting, has solved the not enough problem of surrounding rock slip casting in-process slip casting pressure, and the cooperation has the pipeline of gasbag, realizes the sealed to the slip casting hole, prevents to cause the leakage.

Description

Sectional type tunnel sealing grouting device

Technical Field

The utility model relates to the technical field of mine roadways, in particular to a sectional type roadway sealing grouting device.

Background

The mine tunnel is used as an important underground space of a coal mine, the stability and the working environment of the tunnel are guaranteed for underground mining of the coal mine, but along with deep mining of the coal mine, the pressure born by the tunnel is larger and larger, cracks in surrounding rocks of the tunnel are increased, and the stability of the tunnel is seriously damaged.

In order to enhance the stability of the roadway, grouting reinforcement is generally adopted. Traditional slip casting device deep slip casting is efficient, and the body of rod is longer, and slip casting pressure is not enough to cause the injected quantity not enough between the surrounding rock crack, and the thick liquid diffusion radius is little. Surrounding rocks on the shallow surface of the roadway are broken seriously, and the shallow surface of the roadway is easy to permeate preferentially in the conventional grouting process, so that slurry runs on the shallow surface.

Therefore, the sectional type roadway sealing grouting device is provided to solve the problems of leakage and grouting pressure of grouting type reinforcement.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a sectional roadway sealing grouting device to solve the problems in the background technology.

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

the utility model provides a sectional type tunnel seals slip casting device, includes the slip casting pipe, the force pump is connected to the one end of slip casting pipe, and the other end tip of slip casting pipe passes through threaded connection's conical head end cover seal, is provided with the defeated thick liquid pipe of intercommunication force pump in the interlude inner chamber of slip casting pipe, and the outer wall of slip casting pipe is provided with the multiunit inflation formula sealing device of linear distribution, be connected with the multiunit on the defeated thick liquid pipe and lie in the relief valve between the adjacent sealing device, the input elastic connection of relief valve has folding tube, be provided with the extension pipe in a pair of intercommunication slip casting outside of longitudinal symmetry on the folding tube.

Preferably, the expansion type sealing device is a circular air bag, a circular groove is formed in the outer wall of the grouting pipe and corresponds to the air bag, and the air bag is fixedly installed in the circular groove.

Preferably, the inner wall of the circular ring of the air bag is provided with an adhesive layer, and the air bag is fixedly bonded on the inner wall of the circular ring groove through the adhesive layer.

Preferably, a sliding groove is formed in the inner wall of the grouting pipe, corresponding to the end plate of the folding pipe, a guniting hole is formed in the outer wall of the grouting pipe, and the guniting hole is located at the end portion, close to the safety valve, of the sliding groove.

Preferably, the two ends of the folding pipe are provided with end plates, the two ends of the folding pipe are respectively communicated with the safety valve and the slurry conveying pipe, and the pair of the extension pipes which are symmetrical in the front and back are positioned on the end plate, close to the safety valve, of one side of the folding pipe.

Preferably, the sliding end part of the extension pipe is slidably mounted in the chute, one end of the extension pipe is communicated with the folding pipe, and the other end of the extension pipe is opposite to the guniting hole.

Preferably, a pair of inner pressing plates distributed in a circumferential array mode are arranged on the inner wall of the end plate on one side, close to the safety valve, of the folding pipe, and the inner pressing plates are vertically distributed along the extension direction of the slurry conveying pipe.

Preferably, the inner wall of the grouting pipe is provided with an air guide pipe parallel to the slurry conveying pipe, the outer end of the air guide pipe is connected with an air pump, and the inner end of the air guide pipe is communicated with the air bags in linear distribution.

Compared with the prior art, the utility model has the beneficial effects that:

1. the utility model adopts a sectional and modularized grouting mode to decompose long-section grouting to realize single-section sectional grouting, solves the problem of insufficient grouting pressure in the surrounding rock grouting process, is convenient to transport the grouting pipeline to a roadway from the ground surface in a sectional mode, performs module assembly on the roadway, and is matched with the pipeline with the air bag to realize sealing of grouting holes and prevent leakage.

2. The utility model adopts the matching of the safety valve and the folding pipe, thereby controlling the opening and closing of the safety valve through the internal pressure of the slurry conveying pipe in the grouting pipe, achieving the purpose of sectional control, simultaneously driving the folding pipe to stretch in the opening and closing process of the safety valve, controlling the grouting of a single clearance section, further realizing the control of the grouting pressure, ensuring the grouting to be more uniform, and increasing the stability and the bearing capacity of surrounding rocks.

Drawings

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

FIG. 2 is a schematic view of the end face structure of the folded tube of the present invention;

FIG. 3 is a front view of the present invention;

fig. 4 is a schematic structural diagram of a single-segment grouting pipe module according to the utility model.

In the figure: 1. a grouting pipe; 2. a pressure pump; 3. a conical head end cover; 4. a pulp conveying pipe; 5. an air bag; 6. a safety valve; 7. folding the tube; 8. an extension pipe; 9. an air duct; 10. a circular groove; 11. an adhesive layer; 12. a guniting hole; 13. an inner pressure plate; 14. a chute.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 4, the present invention provides a technical solution:

the utility model provides a sectional type sealed slip casting device in tunnel, includes slip casting pipe 1, and force pump 2 is connected to the one end of slip casting pipe 1, and the other end tip of slip casting pipe 1 passes through threaded connection's conical head end cover 3 sealedly, and through 2 slip castings to slip casting pipe 1 of force pump, through conical head end cover 3 realization end seal, the grafting of slip casting pipe 1 in the drilling of being convenient for simultaneously.

The outer wall of slip casting pipe 1 is provided with the multiunit inflation formula sealing device of linear distribution, inflation formula sealing device is ring form gasbag 5, the position that corresponds with gasbag 5 on the outer wall of slip casting pipe 1 is provided with

ring groove

10, 5 fixed mounting of gasbag are in ring groove 10, the ring inner wall of gasbag 5 is provided with adhesive linkage 11, gasbag 5 passes through adhesive linkage 11 fixed bonding on the inner wall of ring groove 10, utilize adhesive linkage 11 to realize the fixed mounting of gasbag 5, utilize the ring groove 10 of invagination formula, realize accomodating of gasbag 5, thereby be convenient for the grafting installation of slip casting pipe 1.

The inner wall of slip casting pipe 1 is provided with air duct 9 parallel with defeated thick liquid pipe 4, and the air pump is connected to the outer end of air duct 9, and the inner intercommunication linear distribution's of air duct 9 gasbag 5 utilizes air duct 9 to realize aerifing to gasbag 5, and gasbag 5 inflation is hugged closely the drilling inner wall, realizes sealing slip casting pipe 1 multistage, avoids causing the thick liquid to leak.

Be provided with the defeated thick liquid pipe 4 of intercommunication force pump 2 in the interlude inner chamber of slip casting pipe 1, be connected with the multiunit on defeated thick liquid pipe 4 and be located the relief valve 6 between the adjacent sealing device, the input elastic connection of relief valve 6 has folding pipe 7, drives folding pipe 7 through relief valve 6 and stretches out and draws back.

The folding pipe 7 is provided with a pair of extension pipes 8 which are symmetrical front and back and are communicated with the outer side of the grouting pipe 1, the two ends of the folding pipe 7 are provided with end plates, the two ends of the folding pipe 7 are respectively communicated with the safety valve 6 and the grout conveying pipe 4, and the pair of extension pipes 8 which are symmetrical front and back are positioned on the end plate on one side, close to the safety valve 6, of the folding pipe 7.

The inner wall of the end plate of the folding pipe 7 close to one side of the safety valve 6 is provided with a pair of inner pressing plates 13 distributed in a circumferential array mode, the inner pressing plates 13 are vertically distributed along the extension direction of the slurry conveying pipe 4, and slurry impacts the inner pressing plates 13 when the slurry conveying pipe 4 is fed with the slurry, so that the impact of the slurry on the safety valve 6 is reduced.

A chute 14 is arranged on the inner wall of the grouting pipe 1 corresponding to the end plate of the folding pipe 7, a guniting hole 12 is arranged on the outer wall of the grouting pipe 1, the guniting hole 12 is positioned at the end part of the chute 14 close to one end of the safety valve 6, the sliding end part of the extension pipe 8 is slidably arranged in the chute 14, one end of the extension pipe 8 is communicated with the folding pipe 7, the other end of the extension pipe 8 is opposite to the guniting hole 12, the safety valve 6 is in a closed state along with the liquid inlet of the grout conveying pipe 4, so that the folding pipe 7 extends, the extension pipe 8 is communicated with the guniting hole 12, the grout is discharged along the extension pipe 8 and the guniting hole 12 and poured in a crack section between the adjacent air bags 5, when the section is fully poured, the internal pressure of the slurry conveying pipe 4 is increased, the safety valve 6 is opened to drive the folding pipe 7 to slide along the sliding chute 14, further realizing the sealing of the section of the grout spraying hole 12, and enabling the grout to enter the pipeline of the next section of the grout conveying pipe 4 along the safety valve 6, thereby achieving the purpose of sectional grouting.

The working principle is as follows: at first through the force pump 2 to slip casting pipe 1 slip casting, realize the end seal through conical head end cover 3, the grafting of slip casting pipe 1 in drilling of being convenient for simultaneously, utilize adhesive linkage 11 to realize the fixed mounting of gasbag 5, utilize the ring groove 10 of invagination formula, realize accomodating of gasbag 5, thereby the grafting installation of slip casting pipe 1 of being convenient for, utilize air duct 9 to realize aerifing to gasbag 5, gasbag 5 inflation and hug closely the drilling inner wall, the realization is sealed to 1 multistage of slip casting pipe, avoid causing the thick liquid to leak.

When defeated thick liquid pipe 4 feed liquor, the thick liquid strikes on inner pressure plate 13 to reduced the impact of thick liquid to relief valve 6, along with defeated thick liquid pipe 4's feed liquor, relief valve 6 is in the tight closed state, makes folding tube 7 extend, extension 8 and whitewashing hole 12 intercommunication, the thick liquid is along extension 8 and whitewashing hole 12 discharge pour in the crack section between adjacent gasbag 5.

After the section is fully poured, the internal pressure of the grout conveying pipe 4 is increased, the safety valve 6 is opened, the folding pipe 7 is driven to slide along the sliding groove 14, the grout spraying hole 12 of the section is sealed, grout enters the pipeline of the next section of grout conveying pipe 4 along the safety valve 6, and therefore the purpose of sectional grouting is achieved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a sectional type tunnel seals slip casting device, includes slip casting pipe (1), its characterized in that: the grouting device is characterized in that one end of the grouting pipe (1) is connected with the pressure pump (2), the end part of the other end of the grouting pipe (1) is sealed through a conical head end cover (3) in threaded connection, a grouting pipe (4) communicated with the pressure pump (2) is arranged in an inner cavity of the middle section of the grouting pipe (1), a plurality of groups of expansion type sealing devices in linear distribution are arranged on the outer wall of the grouting pipe (1), a plurality of groups of safety valves (6) located between adjacent sealing devices are connected onto the grouting pipe (4), the input end of each safety valve (6) is elastically connected with a folding pipe (7), and a pair of extension pipes (8) which are symmetrical in the front and back and are communicated with the outer side of the grouting pipe (1) are arranged on each folding pipe (7).

2. The sectional type roadway sealing grouting device according to claim 1, characterized in that: the expansion type sealing device is a circular-ring-shaped air bag (5), a circular-ring groove (10) is formed in the outer wall of the grouting pipe (1) and corresponds to the air bag (5), and the air bag (5) is fixedly installed in the circular-ring groove (10).

3. The sectional type roadway sealing grouting device according to claim 2, characterized in that: the inner wall of the circular ring of the air bag (5) is provided with an adhesive layer (11), and the air bag (5) is fixedly bonded on the inner wall of the circular ring groove (10) through the adhesive layer (11).

4. The sectional type roadway sealing grouting device according to claim 1, characterized in that: the inner wall of the grouting pipe (1) is provided with a sliding chute (14) at a position corresponding to the end plate of the folding pipe (7), the outer wall of the grouting pipe (1) is provided with a guniting hole (12), and the guniting hole (12) is located at the end part of one end, close to the safety valve (6), of the sliding chute (14).

5. The sectional type roadway sealing grouting device according to claim 4, characterized in that: the two ends of the folding pipe (7) are provided with end plates, the two ends of the folding pipe (7) are respectively communicated with the safety valve (6) and the slurry conveying pipe (4), and the pair of extension pipes (8) which are symmetrical in the front and back are positioned on the end plate on one side, close to the safety valve (6), of the folding pipe (7).

6. The sectional type roadway sealing grouting device according to claim 5, characterized in that: the sliding end part of the extension pipe (8) is slidably arranged in the sliding groove (14), one end of the extension pipe (8) is communicated with the folding pipe (7), and the other end of the extension pipe (8) is opposite to the guniting hole (12).

7. The sectional type roadway sealing grouting device according to claim 1, characterized in that: the inner wall of the end plate at one side of the folding pipe (7) close to the safety valve (6) is provided with a pair of inner pressing plates (13) distributed in a circumferential array manner, and the inner pressing plates (13) are vertically distributed along the extension direction of the slurry conveying pipe (4).

8. The sectional type roadway sealing grouting device according to claim 3, characterized in that: the inner wall of the grouting pipe (1) is provided with an air guide pipe (9) parallel to the slurry conveying pipe (4), the outer end of the air guide pipe (9) is connected with an air pump, and the inner end of the air guide pipe (9) is communicated with an air bag (5) which is linearly distributed.