CN216553944U

CN216553944U - Grouting pipe

Info

Publication number: CN216553944U
Application number: CN202220187177.7U
Authority: CN
Inventors: 孙福江
Original assignee: Tangshan Kailuan Linxi Mining Co ltd
Current assignee: Tangshan Kailuan Linxi Mining Co ltd
Priority date: 2022-01-24
Filing date: 2022-01-24
Publication date: 2022-05-17
Anticipated expiration: 2032-01-24

Abstract

The utility model relates to the technical field of underground construction of mines, in particular to a grouting pipe, which comprises a grouting top pipe, a grouting middle pipe and a grouting bottom pipe which are sequentially connected from top to bottom; the power end of the grouting jacking pipe is fixedly connected with a drill rod, the cross section of the drill rod is polygonal, and the front end of the drill rod is used for connecting a drilling machine; a drill bit is fixedly connected to the grouting end of the grouting bottom pipe, the drill bit is an anchor rod drill bit, and grouting holes are uniformly distributed in the grouting bottom pipe; the connecting ends of the grouting top pipe, the grouting middle pipe and the grouting bottom pipe are all provided with mantle fiber, and a threaded connecting sleeve is sleeved outside the mantle fiber; the grouting pipe can meet grouting hole positions at different angles and different depths, can be used for grouting in different coal rock masses and different grouting materials, and realizes quick installation of the grouting pipe; the utility model is suitable for various projects needing grouting, such as ground projects, underground projects, coal mines, non-coal mines and the like, and has strong applicability and wide application range.

Description

Grouting pipe

Technical Field

The utility model relates to the technical field of mine underground construction, in particular to a grouting pipe.

Background

At present, a shed supporting method and a collision wedge supporting method are generally adopted for maintaining a coal mine underground roadway and passing a fault fracture zone, but roof collapse is easy to occur in the construction process, and the top of the roadway cannot be connected with a roof and is not solid; and the roadway is easy to deform and needs to be repeatedly repaired, and the top plate is easy to damage, thereby bringing great difficulty to construction and safety. Therefore, grouting is often needed for roadway reinforcement, so that the integrity of rock mass in a coal mine is improved, the self bearing capacity of the rock mass is improved, the stability of surrounding rock is kept, the deformation of the surrounding rock is controlled, and the safety and reliability of the construction process are ensured. Therefore, the service life of the roadway can be prolonged by grouting reinforcement, the supporting cost is reduced, repeated casing repair is avoided, the maintenance cost is reduced, and the construction speed is increased.

The grouting reinforcement process comprises an important link of installing a grouting pipe, the grouting pipe is often clamped by slag, gangue and the like falling in a hole in the process of installing the grouting pipe due to the fact that a top plate is damaged, the grouting pipe needs to be manually fed into the grouting pipe or a tool is used for impacting the grouting pipe to enable the grouting pipe to enter the grouting hole, the construction process can be prolonged by manual feeding, the tool is easy to impact to cause the grouting pipe to be bent and deformed, and therefore the grouting pipe cannot be installed at a designed position. Therefore, a grouting pipe which can be quickly installed and is not easy to deform is needed, so that the grouting pipe can be used in grouting holes with different angles, different depths, different coal rock masses and different grouting materials.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems, and provides a grouting pipe which can be quickly installed and arranged and is not easy to deform.

Utility model solves the problem, the technical scheme who adopts is:

a grouting pipe comprises a grouting top pipe, a grouting middle pipe and a grouting bottom pipe which are sequentially connected from top to bottom; the power end of the grouting jacking pipe is fixedly connected with a drill rod, the drill rod is a polygonal solid rod body, and the upper end of the drill rod is connected with a drilling machine; the lower end of the grouting bottom pipe is fixedly connected with a drill bit, the drill bit is an anchor rod drill bit, and a plurality of grouting holes are uniformly distributed in the grouting bottom pipe; the connecting ends of the grouting top pipe, the grouting middle pipe and the grouting bottom pipe are provided with external threads and are connected through threaded connecting sleeves.

Compared with the prior art, the utility model adopting the technical scheme has the outstanding characteristics that:

according to the utility model, the drill bit is arranged at the lower end of the grouting pipe, the grouting pipe is inserted into the rock mass in a rotary excavating mode through the drilling machine, and the barrier can be effectively broken when encountering gangue, slag and the like, so that the grouting pipe is effectively protected from being installed in place. The grouting pipe can meet the grouting arrangement requirements of different angles and different depths, is suitable for construction of different coal rock masses and different grouting materials, achieves quick installation of the grouting pipe, and is strong in applicability and wide in application range.

Preferably, the further technical scheme of the utility model is as follows:

the length of the threaded connecting sleeve is 0.1-0.3 m; and the grouting top pipe, the grouting middle pipe and the grouting bottom pipe are ensured to be connected firmly.

Drawings

FIG. 1 is a schematic view of the overall structure of a grouting pipe according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a grouting pipe jacking according to an embodiment of the utility model;

FIG. 3 is a schematic structural diagram of a grouting pipe according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a grouting bottom pipe according to an embodiment of the utility model.

In the figure: 1. grouting a pipe jacking; 2. grouting a middle pipe; 3. grouting a bottom pipe; 301. grouting holes; 4. a drill rod; 5. a drill bit; 6. a threaded connecting sleeve; 7. and a connecting end.

Detailed Description

The utility model will be further illustrated by the following examples, which are intended only for a better understanding of the present invention and therefore do not limit the scope of the utility model.

As shown in fig. 1 to 4, a grouting pipe includes a grouting top pipe 1, a grouting middle pipe 2 and a grouting bottom pipe 3 connected in sequence from top to bottom. The length of the grouting jacking pipe 1 is 0.1m, a drill rod 4 is welded at the upper end of the grouting jacking pipe 1, the drill rod 4 is 0.2m long and is a polygonal solid rod body, and the front end of the drill rod 4 is used for being connected with a drilling machine. The grouting bottom pipe 3 is 0.5m long, a drill bit 5 is welded at the lower end of the grouting bottom pipe 3, the drill bit 5 is a double-tooth anchor rod drill bit, and grouting holes 301 are uniformly distributed in the grouting bottom pipe 3. The connecting ends 7 of the grouting top pipe 1, the grouting middle pipe 2 and the grouting bottom pipe 3 are provided with external threads and are connected through a thread connecting sleeve 6. Wherein, the length of the grouting pipe 2 is 1 m; the grouting top pipe 1, the grouting middle pipe 2 and the grouting bottom pipe 3 are quartered pipes, and the thread connecting sleeve 6 is a quartered pipe joint.

The length of the thread connecting sleeve 6 is 0.1-0.3 m; the grouting top pipe 1, the grouting middle pipe 2 and the grouting bottom pipe 3 are ensured to be connected firmly.

When the grouting pipe jacking device is used, firstly, one end of the grouting pipe jacking 1 with the drill bit 5 is connected with a drilling machine. And according to the depth of the grouting hole, the grouting top pipe 1, the grouting middle pipe 2 and the grouting bottom pipe 3 are in threaded connection through a threaded connecting sleeve 6. Then, a drilling machine (in the embodiment, a bolting machine is used) is used for driving the connected grouting top pipe 1, grouting middle pipe 2 and grouting bottom pipe 3 to be delivered into the grouting hole 301 in a rotary excavating mode, and when the rock waste, slag and the like happen, the obstacles are broken through a drill bit. And finally, withdrawing the anchor rod machine, unloading the grouting jacking pipe 1, and connecting the high-pressure grouting pipe with the grouting middle pipe 2 in a threaded manner to perform grouting. And after grouting is finished, the grouting hose is unloaded, and the grouting middle pipe and the grouting bottom pipe 3 are taken out. Wherein, when the grouting hole 301 is deep, a plurality of grouting middle pipes 2 can be connected between the grouting top pipe 1 and the grouting bottom pipe 3. The length and diameter of the grouting top pipe 1, the grouting middle pipe 2 and the grouting bottom pipe 3 can be adjusted along with the depth and diameter of the hole.

The utility model has simple structure, reliable performance, convenient manufacture and installation and low manufacture cost. The quick installation of slip casting pipe has been realized. And the grouting hole site of different angles, different degree of depth can be satisfied, can the slip casting use in different coal rock masses, different slip casting materials, be applicable to the multiple engineering that needs the slip casting such as ground engineering, underground works, colliery, non-colliery mountain, the suitability is strong, application scope is wide.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, which is defined by the appended claims and their equivalents.

Claims

1. A slip casting pipe, characterized in that: comprises a grouting top pipe (1), a grouting middle pipe (2) and a grouting bottom pipe (3) which are connected in sequence from top to bottom; a drill rod (4) is fixedly connected to the power end of the grouting jacking pipe (1), the drill rod (4) is a polygonal solid rod body, and the upper end of the drill rod (4) is connected with a drilling machine; a drill bit (5) is fixedly connected to the lower end of the grouting bottom pipe (3), the drill bit (5) is an anchor rod drill bit, and a plurality of grouting holes (301) are uniformly distributed in the grouting bottom pipe (3); the connecting ends (7) of the grouting top pipe (1), the grouting middle pipe (2) and the grouting bottom pipe (3) are provided with external threads and are connected through threaded connecting sleeves.

2. The grouting pipe according to claim 1, characterized in that: the length of the thread connecting sleeve (6) is 0.1-0.3 m.