CN219299331U - A recyclable roadway support-isolation system for preventing air leakage in gob-side entry - Google Patents

Abstract

The utility model discloses a recyclable roadway support-isolation system for air leakage prevention in gob-side entry, and relates to the technical field of support and isolation in underground mining areas of coal mines. It includes a support device and a windproof device. The support device includes several single hydraulic props, wherein each single hydraulic prop includes a prop main body, and trays are respectively arranged at the top and bottom ends of the prop main body, and the two pallets are close to the prop. One side of the main body is respectively provided with threaded sleeves, and the two threaded sleeves are fixedly connected with the two trays, and the two threaded sleeves are sleeved at the two ends of the pillar main body; the windproof device includes an air bag, and the air bag includes The main body of the air bag is provided with an air valve through which the air is inflated into the main body of the air bag. The system of the utility model can not only realize pressure-yielding support for the goaf, but also ensure the effect of isolation and anti-leakage, and can improve the efficiency of sealing and isolation.

Description

A recyclable roadway support-isolation system for preventing air leakage in gob-side entry

technical field

The utility model relates to the technical field of support and isolation in underground mining areas of coal mines, in particular to a recyclable roadway support-isolation system for air leakage prevention in gob-side retaining roadways.

Background technique

Gobside retaining technology is a development direction of coal pillar-free mining technology. It is to maintain the roadway at the edge of the goaf behind the working face, that is, during the mining process of the working face, through effective roadside support and roadway support technology, the The mining roadway of this working face is reserved and used as a mining roadway adjacent to the working face. However, because the gob-side entry is located behind the working face, the mine pressure caused by the mining of the two working faces is stronger than that caused by the coal pillar retaining roadway, and the maintenance of the gob-side entry is more difficult. In addition, since the gob-side retaining will cause air leakage in the working face area, it is easy to cause spontaneous combustion of residual coal or the influx of low-oxygen gas into the working face, so it is necessary to isolate it while supporting it.

This shows that the prior art needs to be further improved.

Utility model content

The purpose of this utility model is to provide a recyclable roadway support-isolation system for air leakage prevention in gob-side entry retention. Improve the efficiency of closed isolation.

In order to achieve the above object, the utility model adopts the following technical solutions:

A recyclable roadway support-isolation system for preventing air leakage in gob-side entry, which includes a support device and a windproof device, and the support device includes several single hydraulic props, wherein each single hydraulic prop It includes a pillar main body, trays are respectively provided at the top and bottom ends of the pillar main body, threaded sleeves are respectively provided on the sides of the two trays close to the pillar main body, and the two threaded sleeves are fixedly connected with the two trays Together, two threaded sleeves are sleeved at the two ends of the pillar main body;

A hook is also provided on the main body of the pillar;

The windproof device includes an airbag, and the airbag includes an airbag main body. An air valve is arranged on the airbag main body, and the air is inflated into the airbag main body through the air valve. The top surface of the airbag main body after inflation is The bottom surface is respectively attached to the top and bottom plates of the roadway. The width of the inflated airbag main body is equal to the distance between adjacent single hydraulic props, and the two sides of the airbag main body are respectively connected to the corresponding single hydraulic props. .

As a preferred solution of the present utility model, shock-absorbing material is filled between the threaded sleeve and the pillar main body.

As another preferred solution of the present invention, an annular hook is provided on the main body of the air bag close to the single hydraulic strut, through which the main body of the air bag is connected to the corresponding single hydraulic strut.

Further preferably, the airbag main body is made of wear-resistant rubber material.

Further, the air valve includes an air chamber, a spring and a live rod, the spring is sleeved on the live rod, the top end of the spring is fixed on the top of the inner wall of the air chamber, and the bottom of the spring The end is fixed on the tail of the living rod, and the top and bottom of the living rod are closely fitted with the top and bottom of the air chamber respectively.

Compared with the prior art, the utility model brings the following beneficial technical effects:

The utility model proposes a recyclable roadway support-isolation system for preventing air leakage in the gob-side entry. By combining the support device and the wind-proof device, it can realize the pressure support of the goaf, It can also ensure the effect of isolation and anti-leakage.

The supporting device is composed of several individual hydraulic props, each of which includes a main body of the prop and trays located at the top and bottom of the main body of the prop. The two trays can increase the force-bearing area at both ends of the single hydraulic prop and reduce the Pressure, to prevent drilling top, drilling bottom phenomenon. Threaded sleeves are also provided at both ends of the main body of the pillar, and shock-absorbing materials are filled between the main body of the pillar and the threaded sleeves. Time to release pressure allows gradual release of force on the concentrated threaded sleeve.

The airbag is located between two adjacent single hydraulic props, and the airbag is fixed by suspension or other means, which can play an isolation effect.

In summary, the utility model proposes a recyclable roadway support-isolation system for air leakage prevention along the gob-side entry, which can solve the technical problems of drilling top, bottom drilling, bending deformation and difficult recovery of single hydraulic props ;The single hydraulic prop adapts to the actual movement of the roof sinking in the goaf, which is beneficial to yield support and keep the roof intact; the cooperation of the single hydraulic prop and the air bag solves the problem of air leakage, and the operation is simple. The support-isolation system of the utility model can be recycled and used, and the efficiency is higher.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described:

Fig. 1 is a schematic diagram of the use state of the recyclable roadway support-isolation system of the utility model to prevent air leakage in gob-side roadway;

Fig. 2 is the structural representation of the utility model single hydraulic prop;

Fig. 3 is a schematic structural view of the threaded sleeve at the top of the main body of the utility model;

Fig. 4 is a structural schematic diagram of the threaded sleeve at the bottom of the main body of the utility model;

Fig. 5 is the utility model airbag structure schematic diagram;

Fig. 6 is a structural schematic diagram of the utility model air valve;

In the picture:

1. The first pallet, 2. The second pallet, 3. Threaded sleeve, 4. Thread, 5. Single hydraulic prop, 6. Damping material, 7. Hook, 8. Safety valve, 9. Air bag, 10. Ring hook, 11, air valve, 12, live rod, 13, air chamber, 14, spring.

Detailed ways

This utility model proposes a recyclable roadway support-isolation system for preventing air leakage along the gob-side entry. In order to make the advantages and technical solutions of the utility model clearer and clearer, the utility model will be further described below in conjunction with specific examples .

As shown in Figures 1 to 2, the utility model is a recyclable roadway support-isolation system for preventing air leakage in gob-side entry, including a support device and a windproof device, and the support device includes several single hydraulic props 5 , shown in conjunction with Fig. 2 to Fig. 4, wherein, each single hydraulic strut 5 comprises a strut main body, trays are respectively arranged at the top and bottom ends of the strut main body, the first tray 1 at the top and the second tray 2 at the bottom , the shape of the first tray 1 and the second tray 2 is quadrilateral, or circular. Through the arrangement of the first pallet and the second pallet, the force-bearing area at both ends of the single hydraulic prop can be increased, the pressure can be reduced, and the phenomena of top drilling and bottom drilling can be prevented.

The two trays are respectively provided with threaded sleeves 3 on one side close to the main body of the pillar, and the two threaded sleeves are fixedly connected with the two trays, and the two threaded sleeves are sleeved at the two ends of the main body of the pillar; The circumference of the threaded sleeve is provided with threads 4, and between the threaded sleeve and the pillar main body is filled with shock-absorbing material 6, such as PU foam, composite pearl cotton, etc. for use in shock-absorbing materials. The threaded sleeve and the shock-absorbing material cooperate with each other. When the pressure is applied, the time for the single hydraulic prop to release the pressure can be increased through the buffering effect of the shock-absorbing material and the threaded sleeve, allowing the threads concentrated at both ends of the single hydraulic prop to The force on the sleeve is released slowly.

A hook 7 and a safety valve 8 that can be automatically closed are also arranged on the main body of the pillar, and the setting of the hook can facilitate the installation of the air bag of the windproof device.

As shown in FIG. 6 , the windproof device includes an airbag 9 , and the airbag includes an airbag main body made of wear-resistant rubber material, which can be folded and conveniently stored. The bottom of the air bag body is provided with an air valve, which is connected to the downhole air pipe for inflation, that is, the downhole air pipe inflates the air bag body through the air valve, and the top and bottom surfaces of the inflated air bag body are respectively attached to the roof and bottom of the roadway. Together, the width of the inflated airbag main body is equal to the distance between adjacent single hydraulic struts, and the two sides of the airbag main body are respectively connected to the corresponding single hydraulic struts. It is equivalent to that the top surface, bottom surface and two sides of the main body of the airbag after inflating are closely attached to the roadway roof, bottom plate and the single hydraulic props on the left and right sides respectively, thus forming a closed "wind wall" to prevent air leakage.

An annular hook 10 is arranged on the main body of the airbag close to the single hydraulic strut, and the main body of the airbag is connected to the corresponding single hydraulic strut through the annular hook 10 .

Further, as shown in Figure 5, the air valve 11 includes an air chamber 13, a spring 14 and a live rod 12, the spring is sleeved on the live rod, the top end of the spring is fixed on the top of the inner wall of the air chamber, and the bottom end of the spring is fixed on the live rod The tail, the top and the bottom of the living rod are closely fitted with the top and the bottom of the air chamber respectively.

The method of using the recyclable roadway support-isolation system for preventing air leakage in gob-side roadway of the present invention is described as follows.

Step 1, as shown in Figure 1, first set up a row of single hydraulic props along the back of the tail beam of the support, and at the same time remove the hydraulic supports one by one, build the single hydraulic props along the working face with support density d, when calculating the single When the number of body hydraulic props is not an integer, add one and round up;

Step 2: After all the individual hydraulic props are erected, airbags are placed between the individual hydraulic props, and the ring hooks on the airbags are hung on the hooks of the individual hydraulic props in turn. After the airbags are placed, the downhole air pipe is connected with the air valve, and each airbag is inflated in turn. After inflating, the air valve is automatically sealed to effectively prevent the airbags from leaking, and the airbags are in close contact with each other, filling the space between the top and bottom plates, effectively preventing air leakage;

Step 3: Both the single hydraulic prop and the air bag can be recycled and reused, and the single hydraulic prop can be compressed and recovered by adjusting the hydraulic pressure. The airbag can be deflated through the live rod, compressed, folded and recovered, and can be used for support and isolation of the next working face after recovery.

The parts not mentioned in this paper can be realized by referring to the existing technology.

Although terms such as the first tray 1 , the second tray 2 , the threaded sleeve 3 , and the thread 4 are frequently used herein, the possibility of using other terms is not excluded. These terms are only used to describe and explain the essence of the utility model more conveniently; interpreting them as any kind of additional limitation is contrary to the spirit of the utility model.

It should be further explained that the specific embodiments described herein are only illustrations for the spirit of the present utility model. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Claims (5)

1. A recyclable roadway support-isolation system for preventing air leakage along the gob-side entry, which includes a support device and a windproof device, characterized in that: The support device includes several single hydraulic struts, wherein each single hydraulic strut includes a strut main body, trays are respectively arranged at the top and bottom ends of the strut main body, and two pallets are close to one of the main strut main bodies. Threaded sleeves are respectively provided on the sides, and the two threaded sleeves are fixedly connected with the two trays, and the two threaded sleeves are sleeved on the two ends of the main body of the pillar; A hook is also provided on the main body of the pillar; The windproof device includes an airbag, and the airbag includes an airbag main body. An air valve is arranged on the airbag main body, and the air is inflated into the airbag main body through the air valve. The top surface of the airbag main body after inflation is The bottom surface is respectively attached to the top and bottom plates of the roadway. The width of the inflated airbag main body is equal to the distance between adjacent single hydraulic props, and the two sides of the airbag main body are respectively connected to the corresponding single hydraulic props. . 2. A recyclable roadway support-isolation system for air leakage prevention along gob-side entry according to claim 1, characterized in that: shock-absorbing material is filled between the threaded sleeve and the pillar main body. 3. A recyclable roadway support-isolation system for air leakage prevention along the gob-side roadway according to claim 1, characterized in that: an annular hook is provided on the main body of the air bag close to the single hydraulic prop, and through the said The ring hook connects the main body of the airbag to the corresponding single hydraulic prop. 4. A recyclable roadway support-isolation system for air leakage prevention along the gob-side roadway according to claim 1, characterized in that: the main body of the airbag is made of wear-resistant rubber material. 5. A recyclable roadway support-isolation system for air leakage prevention along gob-side entry according to claim 1, characterized in that: the air valve includes an air chamber, a spring and a live rod, and the spring Set on the living rod, the top of the spring is fixed on the top of the inner wall of the air, the bottom of the spring is fixed on the tail of the living rod, and the top and bottom of the living rod are respectively connected with the air The top and bottom of the chamber fit snugly.

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