CN215890090U

CN215890090U - Underground coal mine airtight wall structure

Info

Publication number: CN215890090U
Application number: CN202122454661.XU
Authority: CN
Inventors: 古全忠; 胡成成
Original assignee: Ningxia Jiuwei Mine Safety Engineering Co ltd
Current assignee: Ningxia Jiuwei Mine Safety Engineering Co ltd
Priority date: 2021-10-12
Filing date: 2021-10-12
Publication date: 2022-02-22
Anticipated expiration: 2031-10-12

Abstract

The utility model provides a coal mine underground closed wall structure which comprises a closed wall structure body, wherein the closed wall structure body comprises a rear baffle, a front baffle, a partition, a metal net and a cross frame, the partition is installed on one side of the rear baffle, a connecting plate is arranged at the rear end of the partition, a plurality of screws are nailed on the surface of the connecting plate, the front baffle is installed at the front end of the partition, a plurality of cement nails are arranged on two sides of the front baffle, grouting holes are formed in the top of the front baffle, the cross frame is installed on two sides of the partition, the metal net is placed on the top of the cross frame, reinforcing steel bars are installed on the side edges of the metal net, and the tops of the front baffle and the rear baffle are attached to the top surface.

Description

Underground coal mine airtight wall structure

Technical Field

The utility model relates to the technical field of airtight wall structures, in particular to an underground airtight wall structure for a coal mine.

Background

The downhole safety of coal mines is an extremely important link in coal mine production. The coal mine sealing wall is still one of main facilities for ensuring the ventilation safety of the coal mine.

However, the existing coal mine dense permanent closed wall is usually built by bricks, sand and cement, so that the construction difficulty is higher and the process flow is more complicated.

On the other hand, the conventional coal mine underground sealing wall is mostly of a vertical structure, when the top is impacted and pressed by falling rocks, the collapse risk can occur, the sealing wall is long in construction period and low in efficiency, construction mainly depends on manual work, and the labor intensity is high.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a coal mine underground closed wall structure to solve the problems in the background art, simplifies the construction process, and has the advantages of quicker construction, higher firmness, wider application range and good sealing effect.

In order to achieve the purpose, the utility model is realized by the following technical scheme: the utility model provides a colliery is airtight wall structure in pit, includes airtight wall structure body, airtight wall structure body includes backplate, preceding baffle, metal mesh and crossbearer, the baffle is installed to one side of backplate, the rear end of baffle is provided with the connecting plate, the surface nail of connecting plate is equipped with a plurality of screws, baffle before the front end of baffle is installed, the both sides of preceding baffle are provided with a plurality of cement nails, the slip casting hole has been seted up at the top of preceding baffle, the crossbearer is installed to the both sides of baffle, the metal mesh has been placed at the top of crossbearer, the reinforcing bar is installed to the side of metal mesh, the top and the top surface of preceding baffle and backplate are laminated mutually, the bottom and the ground of preceding baffle and backplate are laminated mutually.

In a preferred embodiment of the present invention, the rear end of the connecting plate is attached to one side of the back plate, and the partition plate is fixed to the back plate by screws penetrating through both sides of the connecting plate.

In a preferred embodiment of the present invention, the rear end of the partition is perpendicular to the connection plate, and the screws are provided in two rows and are installed at both sides of the partition in a symmetrical fashion.

In a preferred embodiment of the present invention, both sides of the front baffle are nailed to the front end of the partition by cement nails, the front baffle has three layers, and only the middle of the front baffle on the top layer is provided with a grouting hole.

In a preferred embodiment of the present invention, the front baffle and the rear baffle are parallel as a whole.

In a preferred embodiment of the present invention, the length of the metal mesh is equal to the distance between the two partition plates, and the width of the metal mesh is equal to the length of the cross frame to be placed.

The utility model has the beneficial effects that: the utility model discloses a coal mine underground closed wall structure which comprises a closed wall structure body, wherein the closed wall structure body comprises a rear baffle, a connecting plate, screws, a metal net, a partition plate, a front baffle, grouting holes, cement nails, a cross frame, a top surface, the ground and reinforcing steel bars.

1. This colliery is airtight wall structure in pit adopts bilayer structure to cut apart the support, can prevent effectively that the top from receiving the condition of collapsing that the rock fall strikes and lead to, the security is higher, and only need build back in proper order with preceding baffle, backplate and baffle during the installation and pour and can accomplish, has simplified the structure of frame, and modular design can directly splice at the job site, has shortened the flow of buildding greatly, has the effect of quick construction.

2. This colliery is airtight wall structure in pit breaks the division with the inner space on the vertical direction through the baffle, and the cement that will pour falls into the cubic region that the size is the same to ensure that the cement capacity of pouring into in every block region is the same, prevent that cement from concentrating the accumulational condition, and then improve holistic structural strength, the stress point is more even.

3. This colliery is airtight wall structure's in pit centre is provided with double-deck metal mesh, and the side of metal mesh is connected through the reinforcing bar to take on the surface of crossbearer, when pouring cement, metal mesh and reinforcing bar can inlay the dress in the inside of cement, improve holistic fastness, supplementary cement shaping.

Drawings

FIG. 1 is a structural schematic diagram of the appearance of a coal mine underground closed wall structure of the utility model;

FIG. 2 is a side sectional view of a coal mine underground closed wall structure of the present invention;

FIG. 3 is a schematic structural diagram of a partition plate part of a coal mine underground closed wall structure according to the utility model;

in the figure: 1. a tailgate; 2. a connecting plate; 3. a screw; 4. a metal mesh; 5. a partition plate; 6. a front baffle; 7. grouting holes; 8. a cement nail; 9. a cross frame; 10. a top surface; 11. a ground surface; 12. and (5) reinforcing steel bars.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

Referring to fig. 1 to 3, the present invention provides a technical solution: the utility model provides a colliery is airtight wall structure in pit, includes airtight wall structure body, airtight wall structure body includes backplate 1, preceding baffle 6, baffle 5, metal mesh 4 and crossbearer 9, baffle 5 is installed to one side of backplate 1, the rear end of baffle 5 is provided with connecting plate 2, the surface nail of connecting plate 2 is equipped with a plurality of screws 3, baffle 6 before the front end of baffle 5 is installed, the both sides of preceding baffle 6 are provided with a plurality of cement nails 8, slip casting hole 7 has been seted up at the top of preceding baffle 6, crossbearer 9 is installed to the both sides of baffle 5, metal mesh 4 has been placed at the top of crossbearer 9, reinforcing bar 12 is installed to the side of metal mesh 4, the top and the top 10 of preceding baffle 6 and backplate 1 are laminated mutually, the bottom and the ground 11 of preceding baffle 6 and backplate 1 are laminated mutually.

As a preferred embodiment of the present invention, the rear end of the connecting plate 2 is attached to one side of the back baffle 1, the partition plate 5 is fixedly connected to the back baffle 1 after penetrating through both sides of the connecting plate 2 by the screws 3, the connecting plate 2 increases the attachment area with the back baffle 1, and the sealing effect is improved.

In a preferred embodiment of the present invention, the rear end of the partition 5 is perpendicular to the connecting plate 2, and the screws 3 are arranged in two rows and are symmetrically installed on both sides of the partition 5, so as to ensure the stability of connection and prevent falling off.

In a preferred embodiment of the present invention, both sides of the front barrier 6 are nailed to the front end of the partition 5 by cement nails 8, the front barrier 6 has three layers, and only the middle of the front barrier 6 of the top layer is provided with a grouting hole 7, cement is injected into the interior through the grouting hole 7, and the grouting hole 7 is closed after casting.

In a preferred embodiment of the present invention, the front baffle 6 and the rear baffle 1 are parallel to each other, thereby improving the stability of the bottom and preventing collapse.

In a preferred embodiment of the present invention, the length of the metal mesh 4 is the same as the distance between the two partition plates 5, and the width of the metal mesh 4 is the same as the length of the cross frame 9 to be placed, respectively, so that the metal mesh 4 can improve the integrity of cement and enhance the structural strength.

The working principle is as follows: the underground coal mine closed wall structure mainly comprises a rear baffle plate 1, a front baffle plate 6, a partition plate 5, a metal net 4 and a cross frame 9, when in installation, the rear baffle plate 1 is fixed firstly, the top of the rear baffle plate 1 is in contact seal with a top surface 10, the bottom of the rear baffle plate is embedded under the ground 11, the partition plate 5 is fixed on the front side of the rear baffle plate 1 at the same interval by using screws 3, then two layers of metal nets 4 are put on the cross frame 9, finally three layers of front baffle plates 6 are sequentially fixed at the front end of the partition plate 5 by using cement nails 8, a grouting hole 7 is arranged in the middle of the front baffle plate 6 at the topmost, cement is injected into the inner part from the grouting hole 7 and can be finished after the cement is solidified, a certain space which is similar to the closed space is formed inside by using the front baffle plate 6 and the rear baffle plate 1, the situation that the top is impacted by falling rocks can be effectively prevented after the cement is poured, the safety is higher, the structure divides the inner space in the vertical direction by the partition plate 5, dividing poured cement into blocky areas with the same size, uniformly distributing pressure on a front baffle plate 6, improving integral structural strength, ensuring more uniform stress points, arranging a double-layer metal net 4 in the middle, connecting the side edges of the metal net 4 through reinforcing steel bars 12, and putting on the surface of a cross frame 9, when pouring cement, embedding the metal net 4 and the reinforcing steel bars 12 in the cement, improving integral firmness, assisting cement forming, avoiding concentrated accumulation, cutting and customizing a rear baffle plate 1, the front baffle plate 6 and the baffle plate 5 according to specific environmental characteristics when the wall, the ground 11 or the top surface 10 meets uneven conditions at the edge of the closed wall structure, and then filling until the middle of the front baffle plate 6 and the rear baffle plate 1 is enough to bear the cement, and pouring after the front baffle plate 6, the rear baffle plate 1 and the baffle plate 5 are mutually connected, the construction steps of building are simplified, the construction can be carried out quickly, and the construction period is shortened.

While there have been shown and described what are at present considered the fundamental principles and essential features of the utility model and its advantages, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a colliery is airtight wall structure in pit, includes airtight wall structure body, its characterized in that: the airtight wall structure body comprises a rear baffle (1), a front baffle (6), a partition plate (5), a metal net (4) and a cross frame (9), the partition plate (5) is installed on one side of the rear baffle (1), a connecting plate (2) is arranged at the rear end of the partition plate (5), a plurality of screws (3) are nailed on the surface of the connecting plate (2), the front baffle (6) is installed at the front end of the partition plate (5), a plurality of cement nails (8) are arranged on two sides of the front baffle (6), a grouting hole (7) is formed in the top of the front baffle (6), the cross frame (9) is installed on two sides of the partition plate (5), the metal net (4) is placed at the top of the cross frame (9), reinforcing steel bars (12) are installed on the side edges of the metal net (4), the tops of the front baffle (6) and the rear baffle (1) are attached to the top surface (10), the bottom ends of the front baffle (6) and the rear baffle (1) are attached to the ground (11).

2. The underground coal mine closed wall structure according to claim 1, which is characterized in that: the rear end of the connecting plate (2) is attached to one side of the rear baffle (1), and the partition plate (5) penetrates through the two sides of the connecting plate (2) through the screws (3) and then is fixedly connected with the rear baffle (1).

3. The underground coal mine closed wall structure according to claim 1, which is characterized in that: the rear end of the partition plate (5) is perpendicular to the connecting plate (2), and two rows of screws (3) are arranged and symmetrically arranged on two sides of the partition plate (5).

4. The underground coal mine closed wall structure according to claim 1, which is characterized in that: the both sides of preceding baffle (6) are followed closely the dress in the front end of baffle (5) through cement nail (8), preceding baffle (6) are provided with the three-layer, and have only the centre of preceding baffle (6) on top layer and seted up slip casting hole (7).

5. The underground coal mine closed wall structure according to claim 1, which is characterized in that: the front baffle (6) and the rear baffle (1) are integrally parallel.

6. The underground coal mine closed wall structure according to claim 1, which is characterized in that: the length of the metal net (4) is the same as the distance between the two partition boards (5), and the width of the metal net (4) is the same as the length of the cross frame (9).