CN218324817U

CN218324817U - Two packer layering slip casting stagnant water devices

Info

Publication number: CN218324817U
Application number: CN202222819842.2U
Authority: CN
Inventors: 张启国; 刘宁; 李兰波; 徐为民; 杨阳; 刘兵; 方炳东
Original assignee: Anhui Lianghuai Construction Co ltd; Beijing Urban Construction Yatai Group Co Ltd
Current assignee: Anhui Lianghuai Construction Co ltd; Beijing Urban Construction Yatai Group Co Ltd
Priority date: 2022-10-25
Filing date: 2022-10-25
Publication date: 2023-01-17
Anticipated expiration: 2032-10-25

Abstract

The utility model discloses a two packer layering slip casting stagnant water devices belongs to tunnel construction equipment technical field. This two packer layering slip casting sealing device includes: one end of the central tube is provided with a pulp inlet, and the other end of the central tube is sleeved with a lower joint; the sleeve is sleeved outside the central pipe and is close to one end of the slurry inlet, a conical inclined plane is arranged on the outer wall of the sleeve, and a liquid inlet hole is formed in the conical inclined plane; the rubber cylinder is sleeved outside the central pipe, one end of the rubber cylinder is hermetically connected with the outer wall of the sleeve, the other end of the rubber cylinder is hermetically connected with the outer wall of the lower connector, a gap is reserved between the inner wall of the rubber cylinder and the outer wall of the central pipe, and the gap is communicated with the liquid inlet hole; and the water supply device is communicated with the liquid inlet hole. The utility model discloses a two packer layering slip casting stagnant water device can assist the water leakage point and the rock crack grout of filling to the geology fault to accomplish the task of shutoff rock stratum crack, stagnant water leaking stoppage, thereby prevent that the geology fault from appearing gushing the water phenomenon.

Description

Two packer layering slip casting stagnant water devices

Technical Field

The utility model relates to a tunnel construction equipment technical field, concretely relates to two packer layering slip casting stagnant water devices.

Background

The tunnel water burst is a dynamic damage phenomenon caused by that the tunnel tunneling damages the aquifer structure, so that the hydrodynamic condition and the surrounding rock mechanical equilibrium state are changed rapidly, and the energy stored in the underground water body is released instantly in a high-speed fluid migration mode. If the underground water carries a large amount of mud sand, or the mud sand saturated with water suddenly gushes out of the human tunnel, the underground water is called mud burst. The reasons for water leakage in tunnels can be roughly divided into two categories, natural factors and human factors. The natural factors generally cause influence on underground water caused by tunnel excavation and are objective factors for water leakage of the tunnel. The artificial factors include imperfect tunnel water drainage system, unreasonable arrangement of water drainage pipelines, insufficient depth and width of drainage ditches or incapability of normal drainage due to blockage by mud, mortar and slurry.

When water leakage and water burst problems occur in the tunnel, the common treatment method is tunnel radial grouting and tunnel surrounding rock advanced peripheral grouting. Although the pressure-maintaining grouting water-stopping technology for plugging orifices can well solve the problem of water leakage of tunnels, the pressure-maintaining grouting water-stopping technology needs to perform plugging grouting in sections, has poor pressure-maintaining effect on the conditions of long grouting distance and large water pressure, is long in construction operation time consumption, and cannot meet the requirements of site construction. Therefore, a grouting water stopping device needs to be designed, a new grouting water stopping process is combined, effective plugging is carried out at one time, and the problem of water gushing after the diameter of the reamed hole is increased is solved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the problem among the prior art, provide a two packer layering slip casting stagnant water device, can assist and pack the grout to the water leakage point and the rock crack of geology fault to can high efficiency accomplish the task of shutoff rock stratum crack, stagnant water leaking stoppage, thereby prevent that the geology fault from appearing gushing the water phenomenon.

The utility model provides a two packer layering slip casting watertight fittings, include:

one end of the central tube is provided with a pulp inlet, and the other end of the central tube is sleeved with a lower joint;

the sleeve is sleeved outside the central pipe and is close to one end of the pulp inlet, a conical inclined plane is arranged on the outer wall of the sleeve, and a liquid inlet hole is formed in the conical inclined plane;

the rubber cylinder is sleeved outside the central pipe, one end of the rubber cylinder is hermetically connected with the outer wall of the sleeve, the other end of the rubber cylinder is hermetically connected with the outer wall of the lower connector, a gap is reserved between the inner wall of the rubber cylinder and the outer wall of the central pipe, and the gap is communicated with the liquid inlet hole;

and the water supply device is communicated with the liquid inlet hole.

Preferably, the water supply device is communicated with the liquid inlet hole through a water pipe, the water pipe is provided with a stop valve and a water pressure detector, and the water pressure detector is used for detecting water pressure in the water pipe.

Preferably, the slurry inlet of the central pipe is detachably connected with an upper joint.

Preferably, the sleeve is in sealing detachable connection with the rubber barrel, and the rubber barrel is in sealing detachable connection with the lower joint.

Preferably, the inner wall of the sleeve is hermetically connected with the outer wall of the central tube, and the inner wall of the lower joint is also hermetically connected with the outer wall of the central tube.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a two packer layering slip casting stagnant water device can assist the water leakage point and the rock crack grout of packing to the geology fault to can high efficiency accomplish the task of shutoff rock stratum crack, stagnant water leaking stoppage, thereby prevent that the geology fault from appearing gushing water the phenomenon.

Through setting up stop valve and water pressure detector, can prevent that the too big harm that causes the packing element of water pressure in the packing element. Through setting up the top connection, the top connection can be dismantled with the grout inlet and the drilling rod of center tube and be connected, can make things convenient for the dismantlement and the installation of this device. Through setting up sleeve pipe and packing element to sealed removable connection, will packing element and lower clutch set up to sealed removable connection, can make things convenient for the installation, the dismantlement and the maintenance of packing element. Through setting up bushing inner wall and center tube outer wall into sealing connection, will lower clutch inner wall also sets up to sealing connection with the center tube outer wall, can prevent that the water in the clearance between packing element and the center tube from taking place to leak to guarantee the normal operating of this device.

Drawings

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

fig. 2 is a schematic structural view of the working mode of the utility model before water stopping;

fig. 3 is the schematic structural diagram of the working mode after water stopping of the utility model.

Description of reference numerals:

101. the central pipe, 102, a slurry inlet, 103, a lower joint, 104, a sleeve, 105, a conical inclined plane, 106, a liquid inlet hole, 107, a rubber cylinder, 108, a gap, 2, a water pipe and 3, an upper joint.

Detailed Description

The following detailed description of the present invention is provided in conjunction with the accompanying fig. 1-3, but it should be understood that the scope of the present invention is not limited by the following detailed description. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example 1:

as shown in fig. 1-3, the utility model provides a pair of two packer layering slip casting sealing device, include: the device comprises a central pipe 101, a sleeve 104, a rubber cylinder 107 and a water supply device, wherein one end of the central pipe 101 is provided with a pulp inlet 102, and the other end of the central pipe 101 is sleeved with a lower joint 103; the sleeve 104 is sleeved outside the central pipe 101 and is close to one end of the slurry inlet 102, a conical inclined plane 105 is arranged on the outer wall of the sleeve 104, and a liquid inlet hole 106 is formed in the conical inclined plane 105; a rubber cylinder 107 is sleeved outside the central tube 101, one end of the rubber cylinder 107 is hermetically connected with the outer wall of the sleeve 104, the other end of the rubber cylinder 107 is hermetically connected with the outer wall of the lower joint 103, a gap 108 is reserved between the inner wall of the rubber cylinder 107 and the outer wall of the central tube 101, and the gap 108 is communicated with the liquid inlet hole 106; the water supply device is communicated with the liquid inlet hole 106.

The working principle of example 1 is now briefly described:

when the device is used, the guide drill bit is used for drilling towards the water leakage point until the drill hole is communicated with the water leakage point, and then the drill hole is reamed to form the guide hole. After the guide hole is formed, the guide drill bit is withdrawn out of the guide hole, the guide drill bit is detached, a drilling machine is used for connecting a drill rod, the drill rod is connected with the double packer layered grouting water stopping device, and the device is conveyed into the guide hole until reaching a water leakage point. Then, a water supply device is used for supplying high-pressure water flow into the liquid inlet hole 106, the high-pressure water flow enters a gap 108 between the inner wall of the rubber cylinder 107 and the outer wall of the central tube 101, so that the rubber cylinder 107 is expanded until the outer wall of the rubber cylinder 107 is attached to the inner wall of the guide hole, and the water supply device is closed. At this time, cement slurry is introduced into the slurry inlet 102 of the central tube 101 until the cement slurry fills up the gap between the water leakage point and the rubber sleeve 107 and the rock fracture, and after the cement slurry is solidified, the aims of plugging the rock stratum fracture, stopping water and stopping leakage are achieved. Furthermore, the tapered slope 105 is provided on the outer wall of the sleeve 104, and the liquid inlet hole 106 is provided on the tapered slope 105, so that the influence of the expansion of the rubber cylinder 107 by water on the water supply of the water supply device can be prevented.

The utility model discloses a two packer layering slip casting stagnant water device can assist the water leakage point and the rock crack grout of packing to the geology fault to can high efficiency accomplish the task of shutoff rock stratum crack, stagnant water leaking stoppage, thereby prevent that the geology fault from appearing gushing water the phenomenon.

Example 2:

in addition to embodiment 1, in order to stop the water supply into the rubber cylinder 107 in time when the pressing force between the outer wall of the rubber cylinder 107 and the inner wall of the guide hole is sufficient, the damage to the rubber cylinder 107 caused by the excessive water pressure in the rubber cylinder 107 is prevented.

As shown in fig. 1 to 3, the water supply device is connected to the liquid inlet hole 106 through a water pipe 2, and the water pipe 2 is provided with a stop valve and a water pressure detector for detecting the water pressure in the water pipe 2.

When supplying water to the clearance 108 between the inner wall of the rubber sleeve 107 and the outer wall of the central tube 101, the water pressure in the water service pipe 2 can be detected in real time through a water pressure detector, so that the water pressure in the clearance 108 is monitored in real time, when the outer wall of the rubber sleeve 107 is in contact with the inner wall of the guide hole, the water pressure in the rubber sleeve 107 is increased steeply, when the water pressure in the clearance 108 in the rubber sleeve 107 reaches a preset pressure, the extrusion force between the outer wall of the rubber sleeve 107 and the inner wall of the guide hole is strong enough, at the moment, the water supply device is closed through the stop valve, and therefore the water supply to the clearance 108 is stopped. Through setting up stop valve and water pressure detector, can in time stop supplying water in to packing element 107 when the extrusion force between packing element 107 outer wall and the guiding hole inner wall is enough to prevent that the too big harm that causes packing element 107 of water pressure in the packing element 107.

As a preferable scheme, as shown in fig. 1, the slurry inlet 102 of the central pipe 101 is detachably connected with an upper joint 3. Through setting up top connection 3, top connection 3 can be dismantled with the grout inlet 102 and the drilling rod of center tube 101 and be connected, can make things convenient for the dismantlement and the installation of this device.

Preferably, as shown in fig. 1, the sleeve 104 is detachably connected with the rubber cylinder 107 in a sealing manner, and the rubber cylinder 107 is detachably connected with the lower joint 103 in a sealing manner. Through setting up sleeve pipe 104 and packing element 107 to sealed removable the connection, will packing element 107 and lower clutch 103 set up to sealed removable the connection, can make things convenient for packing element 107's installation, dismantlement and maintenance.

Preferably, as shown in fig. 1, the inner wall of the casing 104 is connected to the outer wall of the central tube 101 in a sealing manner, and the inner wall of the lower joint 103 is also connected to the outer wall of the central tube 101 in a sealing manner. Through setting up sleeve 104 inner wall and center tube 101 outer wall into sealing connection, will lower clutch 103 inner wall also sets up to sealing connection with center tube 101 outer wall, can prevent that the water in the clearance 108 between packing element 107 and the center tube 101 from leaking to guarantee the normal operating of this device.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a two packer layering slip casting sealing device which characterized in that includes:

one end of the central pipe (101) is provided with a pulp inlet (102), and the other end of the central pipe (101) is sleeved with a lower joint (103);

the slurry inlet pipe comprises a sleeve (104) sleeved outside a central pipe (101) and close to one end of a slurry inlet (102), wherein a conical inclined plane (105) is arranged on the outer wall of the sleeve (104), and a liquid inlet hole (106) is formed in the conical inclined plane (105);

the rubber sleeve (107) is sleeved outside the central tube (101), one end of the rubber sleeve (107) is in sealing connection with the outer wall of the sleeve (104), the other end of the rubber sleeve (107) is in sealing connection with the outer wall of the lower joint (103), a gap (108) is reserved between the inner wall of the rubber sleeve (107) and the outer wall of the central tube (101), and the gap (108) is communicated with the liquid inlet hole (106);

and the water supply device is communicated with the liquid inlet hole (106).

2. The double-packer layered grouting water stopping device as claimed in claim 1, wherein the water supply device is communicated with the liquid inlet hole (106) through a water pipe (2), the water pipe (2) is provided with a stop valve and a water pressure detector, and the water pressure detector is used for detecting the water pressure in the water pipe (2).

3. The double-packer layered grouting water stopping device as claimed in claim 1, characterized in that the slurry inlet (102) of the central pipe (101) is detachably connected with an upper joint (3).

4. The double-packer layered grouting water stopping device as claimed in claim 1, wherein the sleeve (104) is in sealed detachable connection with a rubber cylinder (107), and the rubber cylinder (107) is in sealed detachable connection with the lower joint (103).

5. A double packer layered grouting water stopping device according to claim 1, characterized in that the inner wall of the sleeve (104) is connected with the outer wall of the central pipe (101) in a sealing way, and the inner wall of the lower joint (103) is also connected with the outer wall of the central pipe (101) in a sealing way.