CN214273687U

CN214273687U - High-pressure air stirring extrusion anchoring agent device

Info

Publication number: CN214273687U
Application number: CN202120097056.9U
Authority: CN
Inventors: 许兴亮; 雷亚军; 田素川; 张廷寿; 韩存地; 杨建辉; 张兴宽; 华照来; 拓博爱; 王路; 丁维波; 冯裕堂
Original assignee: Shaanxi Coal Caojiatan Mining Co Ltd; China University of Mining and Technology CUMT
Current assignee: Shaanxi Coal Caojiatan Mining Co Ltd; China University of Mining and Technology CUMT
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2021-09-24
Anticipated expiration: 2031-01-14

Abstract

The utility model discloses a high pressure wind stirring extrusion anchoring agent device, which comprises a main body pipe, a fixed shaft, a spiral breaker and a high pressure wind pipe, wherein the spiral breaker fully breaks and stirs the anchoring agent, thereby solving the problem of low anchoring force caused by uneven filling of the anchoring agent of a novel supporting structure in a rapid excavation roadway; on the other hand, the anchoring agent is quickly fed into the bottom of the hole by high-pressure air, is quickly stirred under the action of pressure and then enters a gap between the wall of the main body pipe and the wall of the drilled hole, so that the filling speed is high, the compactness is good, and the problems that the porosity of an anchoring layer is high, the bonding effect is greatly influenced by water and the final anchoring force is low when the anchoring agent is pushed by high-pressure water are solved; the utility model provides a connect between each device reliably, technical principle is understandable, operating method is simple, all has beneficial effect to improving construction speed, improving working environment, has very strong practicality.

Description

High-pressure air stirring extrusion anchoring agent device

Technical Field

The utility model relates to a technical field is strutted to the country rock, concretely relates to high-pressure wind stirring extrusion anchoring agent device.

Background

Roadway excavation is a very important link in coal production. In recent years, the rapid development of coal mining technology and equipment has required a significant increase in the rate of roadway excavation to service a prepared coal face, and therefore roadway excavation equipment and technology have rapidly developed. The tunneling and anchoring combined unit and the hydraulic anchor rod drill carriage gradually replace a single anchor rod drill rig to become main mechanical equipment for tunnel tunneling and anchoring service, the equipment really realizes tunneling and anchoring synchronization, and the labor efficiency is improved to a great extent. In the tunneling process of the tunneling and anchoring combined unit, the total time of the whole process flow is occupied by supporting by 50% -60%, so that the supporting operation time in one cycle operation is reduced, and the tunneling efficiency in unit time of a roadway can be improved to a great extent.

In order to reduce the supporting operation time and improve the tunneling speed, a tubular supporting mode is provided in the field practice process to replace the traditional anchor rod supporting, namely common four-way pipes are adopted as supporting main bodies and are arranged in a drill hole, then an anchoring agent is arranged in the pipes, the anchoring agent is conveyed to the bottom of the hole by high-pressure water, and then the anchoring agent is squeezed by water pressure to enter gaps between the pipe walls and the hole walls so as to be anchored. Although this method reduces the supporting operation time, there are many problems: firstly, although the anchoring agent is fed into the bottom of a hole by using high-pressure water and is broken by extrusion, the anchoring agent cannot be fully stirred, so that the bonding force is low, and meanwhile, after a plastic package wrapping the anchoring agent is broken, gaps between the wall of the pipe and the wall of the hole are easily blocked, so that the anchoring agent cannot completely enter, the length of an anchoring section cannot be effectively controlled, and finally, the anchoring effect is poor, the anchoring force is low, and even the anchoring force is only about 20% of the designed anchoring force; secondly, the anchoring agent is sent to the bottom of the hole by high-pressure water, the water can participate in the stirring and condensation of the anchoring agent, and holes are easily formed in the anchoring layer while the gel time is prolonged, so that the anchoring compactness is poor, and finally the anchoring is unreliable. Therefore, a method for filling and stirring the anchoring agent is needed, which can not only exert the quick installation effect of the supporting mode, but also ensure that the anchoring agent can fully exert the function and reliably anchor.

SUMMERY OF THE UTILITY MODEL

The technique that exists is not enough to the aforesaid, the utility model aims at providing a high-pressure wind stirring extrusion anchoring agent device, it can solve anchor agent stirring inhomogeneous, the filling rate is low, the insecure technical problem of anchor in the new-type support of fast tunnelling tunnel.

In order to solve the technical problem, the utility model adopts the following technical scheme:

the utility model provides a high-pressure air stirring and extruding anchoring agent device, which comprises a main body pipe, wherein a fixed shaft is arranged in the inner cavity of the main body pipe, the fixed shaft comprises a cylinder and a conical cylinder-shaped boss fixed on the front end surface of the cylinder, the outer diameter of the cylinder is the same as the inner diameter of the main pipe, the rear end surface of the cylinder is flush with the rear end surface of the main pipe, a plurality of strip-shaped precutting grooves are annularly formed on the pipe wall of the main body pipe close to the middle position of the fixed shaft, a spiral breaker is fixed at the front end of the fixed shaft, the maximum outer diameter of the spiral breaker is the same as the inner diameter of the main pipe, a plurality of annular air vent holes are also formed on the main body pipe, the air vent holes are positioned at the front end of the spiral crusher, the main part pipe front end is filled with the anchoring agent of encapsulation and the stopping stopper that can closely knit the choke from back to front in proper order, anchoring agent and stopping stopper homoenergetic slide at the main part pipe inner chamber.

Preferably, the distance between the air leakage hole and the rear end face of the main pipe is designed to be the length of the anchoring section, and the designed length of the anchoring section is the same as the sum of the lengths of the fixed shaft, the spiral breaker and the backstop plug.

Preferably, the length of the pre-cut groove is one third of the designed length of the anchoring section, and the width of the pre-cut groove is 3-5 mm.

Preferably, the outer diameter of the front end of the upper boss of the fixed shaft is 2-3 mm smaller than the inner diameter of the main body pipe.

Preferably, the outer wall of the front end of the main body pipe is provided with threads for being in threaded connection with a high-pressure air pipe.

Preferably, the length of the screw breaker is equal to twice the length of the fixed shaft.

Preferably, the retaining plug is a cylinder made of rubber materials, and the diameter of the retaining plug is 1-2 mm larger than the inner diameter of the main pipe.

The beneficial effects of the utility model reside in that: the utility model has the advantages that on one hand, the spiral breaker is arranged to fully break and stir the anchoring agent, thereby solving the problem of low anchoring force caused by uneven filling of the anchoring agent of the novel supporting structure in the rapid excavation roadway; on the other hand, the anchoring agent is quickly fed into the bottom of the hole by high-pressure air, is quickly stirred under the action of pressure and enters a gap between the wall of the main body pipe and the wall of the drilled hole, the filling speed is high, the compactness is good, and the problems that the porosity of an anchoring layer is high, the bonding effect is greatly influenced by water and the final anchoring force is low when the anchoring agent is pushed by high-pressure water are solved; additionally, the utility model provides a connect between each device reliable, technical principle is understandable, operating method is simple, all has beneficial effect to improving construction speed, improving working environment, has very strong practicality.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a high-pressure air stirring and extruding anchoring agent device provided by an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a spiral breaker provided in an embodiment of the present invention;

FIG. 3 is a cross-sectional view of the main tube taken along line A in FIG. 1;

fig. 4 is a sectional view of the main tube taken along line B in fig. 1.

Description of reference numerals:

1-mounting hole, 3-high pressure air pipe, 4-backstop plug, 5-anchoring agent, 6-spiral breaker, 7-fixed shaft, 8-precutting groove, 9-air relief hole and 10-main body pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 to 4, a high pressure wind stirring and extruding anchoring agent device comprises a main body tube 10, wherein a fixed shaft 7 is arranged in an inner cavity of the main body tube 10, the fixed shaft 7 comprises a cylinder and a conical cylinder-shaped boss fixed on a front end surface of the cylinder, an outer diameter of the cylinder is the same as an inner diameter of the main body tube 10, a rear end surface of the cylinder is flush with a rear end surface of the main body tube 10, an outer diameter of a front end of the boss on the fixed shaft 7 is 2 to 3mm smaller than the inner diameter of the main body tube 10, 4 elongated pre-grooves 8 are annularly formed on a tube wall of the main body tube 10 close to a middle position of the fixed shaft 7, a spiral breaker 6 is fixed on a front end of the fixed shaft 7, a maximum outer diameter of the spiral breaker 6 is the same as the inner diameter of the main body tube 10, two wind discharging holes 9 with a diameter of 5 to 8mm are further formed on the main body tube 10, the wind discharging holes 9 are located on a front end of the spiral breaker 6, and a front end of the main body tube 10 is sequentially filled with an encapsulated anchoring agent 5 and a stopper 4 capable of blocking wind tightly, the anchoring agent 5 and the backstop plug 4 can slide in the inner cavity of the main body tube 10.

The distance between the air leakage hole 9 and the rear end face of the main body pipe 10 is designed length of the anchoring section, the designed length of the anchoring section is the same as the sum of the lengths of the fixed shaft 7, the spiral breaker 6 and the retaining plug 4, the air leakage hole 9 is arranged 50mm in front of the spiral breaker 6, and the length of the retaining plug 4 is designed to be 50 mm.

The length of the spiral breaker 6 is 200mm, the lengths of the spiral breaker 6 and the retaining plug 4 are not changed, the length of a cylinder at the bottom of the fixed shaft 7 is not changed and is set to be 100mm, and the boss length of the front end surface of the fixed shaft 7 is changed along with the anchoring length, for example, when the anchoring length is 1.6m, the length of a round table of the fixed shaft 7 is 1.25m, and when the anchoring length is 1.8m, the length of the round table of the fixed shaft 7 is 1.45 m.

The length of the precutting groove 8 is one third of the designed length of the anchoring section, and the width of the precutting groove 8 is 3-5 mm.

The outer wall of the front end of the main body pipe 10 is provided with threads for being in threaded connection with the high-pressure air pipe 3.

The length of the screw breaker 6 is equal to twice the length of the fixed shaft 7.

The retaining plug 4 is a cylinder made of rubber materials, and the diameter of the retaining plug 4 is larger than the inner diameter of the main pipe 10 by 1-2 mm.

The application method of the high-pressure air stirring and extruding anchoring agent device in the embodiment specifically comprises the following steps:

s1, constructing a mounting hole 1 with the depth of 3.5-3.6 m in surrounding rocks of a rapid excavation roadway, then plugging a main body pipe 10 into the mounting hole 1 until the main body pipe is in contact with the bottom, and enabling the front end of the main body pipe 10 to extend out of the mounting hole 1 by 0.1 m;

s2, the exposed section of the main body tube 10 is in threaded connection with the high-pressure air pipe 3, and the high-pressure air pipe 3 is ventilated and pushes the backstop plug 4 and the anchoring agent 5 to move towards the bottom of the hole by using high-pressure gas;

s3, cutting and crushing the packaging layer of the anchor agent 5 after the anchor agent 5 contacts the sharp cut at the front end of the spiral crusher 6, and simultaneously, under the spiral guiding and stirring effects of the spiral crusher 6, the anchor agent 5 enters the hole between the mounting hole 1 and the outer wall of the main pipe 10 from the precutting groove 8 after being fully stirred to be filled and bonded;

s4, under the high-pressure action of the gas in the high-pressure air pipe 3, the retaining plug 4 pushes all the anchoring agents 5 to enter the spiral crusher 6 to be crushed completely, and finally the retaining plug 4 exceeds the air leakage hole 9, so that the high-pressure gas is shunted from the air leakage hole 9 and is sprayed out of the mounting hole, and the retaining plug 4 stops moving;

s5, stopping external high-pressure gas communicated with the high-pressure air pipe 3, and releasing the connection between the high-pressure air pipe 3 and the front end of the main body pipe 10;

and S6, repeating the steps S1-S5, and sequentially operating the rest mounting holes 1.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The utility model provides a high-pressure wind stirring extrusion anchoring agent device, a serial communication port, including main part pipe (10), main part pipe (10) inner chamber is equipped with fixed axle (7), fixed axle (7) include the cylinder and fix the toper column form boss at cylinder front end face, cylinder external diameter is the same with main part pipe (10) internal diameter and its rear end face sets up with main part pipe (10) rear end face parallel and level, hoop is opened on the pipe wall that main part pipe (10) are close to fixed axle (7) intermediate position has a plurality of rectangular shape precutting groove (8), fixed axle (7) front end is fixed with spiral breaker (6), spiral breaker (6) maximum external diameter is the same with main part pipe (10) internal diameter, still open on main part pipe (10) a plurality of rings and let out wind hole (9), it is located spiral breaker (6) front end to let out wind hole (9), main part pipe (10) front end is filled encapsulated anchoring agent (5) and can be closely knit and hinder wind from the back to the front in proper order The anti-back plug (4) is characterized in that the anchoring agent (5) and the anti-back plug (4) can slide in the inner cavity of the main body pipe (10).

2. The high-pressure wind stirring and extruding anchoring agent device as claimed in claim 1, wherein the distance from the air discharging hole (9) to the rear end face of the main pipe (10) is the designed length of the anchoring section, and the designed length of the anchoring section is the same as the sum of the lengths of the fixed shaft (7), the spiral breaker (6) and the backstop plug (4).

3. The high-pressure air stirring and extruding anchoring agent device as claimed in claim 2, wherein the length of the pre-cut groove (8) is one third of the designed length of the anchoring section, and the width of the pre-cut groove (8) is 3-5 mm.

4. The high-pressure wind stirring and extruding anchoring agent device as claimed in claim 1, wherein the outer diameter of the front end of the boss on the fixed shaft (7) is 2-3 mm smaller than the inner diameter of the main body pipe (10).

5. The high-pressure air stirring and extruding anchoring agent device as claimed in claim 1, wherein the outer wall of the front end of the main body tube (10) is provided with threads for connecting the high-pressure air pipe (3) in a threaded manner.

6. A high-pressure wind stirring and extruding anchoring agent device as claimed in claim 1, wherein the length of said screw breaker (6) is equal to twice the length of the fixed shaft (7).

7. The high-pressure wind stirring extrusion anchoring agent device as claimed in claim 1, wherein the retaining plug (4) is a cylinder made of rubber material, and the diameter of the retaining plug (4) is 1-2 mm larger than the inner diameter of the main pipe (10).