Wall structure for gob-side entry retaining

Abstract

The utility model discloses a wall body structure for gob-side entry retaining, which comprises a plurality of wall bodies, a supporting plate is arranged above the splicing position of the plurality of wall bodies, two supporting columns are symmetrically arranged on the supporting plate, and the bottom ends of the two supporting columns are fixed on the ground; through holes are symmetrically formed in the two sides of the supporting plates, a connecting rod is installed between the multiple supporting plates, and the two ends of the connecting rod penetrate through the interiors of the through holes correspondingly and are provided with nuts; the steel belts are anchored on the surfaces of the wall bodies, the supporting plates are fixed to the tops of the two wall bodies through the anchor rods, and then the multiple supporting plates are connected together through the connecting rods, so that the overall strength is improved, the compression resistance and stress capacity of the wall bodies are enhanced, and the safety of a coal mine is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mines, in particular to a wall structure for retaining a tunnel along a goaf. Background Art

[0002] Leaving a lane along the goaf is a coal pillar-free mining technology. After the upper section working face is mined, the original working face machine lane is retained through lane side support for use as a return air lane when the lower section working face is mined. At this time, one side of the retained lane is the goaf and the other side is the coal body. The purpose is to allow a lane to be used twice.

[0003] At present, most of the walls of gob-side tunnels are formed by pouring concrete with flexible formwork bags. This type of wall has low compressive and force-bearing capacity. Under the long-term action of the huge pressure in the coal mine, it is easy to be damaged, affecting the overall safety of the coal mine.

[0004] Therefore, a wall structure for retaining tunnels along the goaf is proposed. Summary of the invention

[0005] The utility model aims to provide a wall structure for retaining a tunnel along the goaf to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a wall structure for gob-side tunnel retention, comprising a plurality of walls, a support plate is installed above the joints of the plurality of walls, two support columns are symmetrically installed on the support plate, and the bottom ends of the two support columns are fixed to the ground;

[0007] Through holes are symmetrically provided on both sides of the support plate, and connecting rods are installed between the plurality of support plates. Both ends of the connecting rods respectively pass through the interior of the through holes and are installed with nuts.

[0008] Preferably, the support plate is "U"-shaped, and a reinforcing rib is integrally formed on the inner side of the support plate.

[0009] Preferably, the support plate and the wall are fixedly connected via a plurality of anchor rods.

[0010] Preferably, a plurality of support rods are evenly installed between the two support columns, and both ends of the support rods are fixed by nuts.

[0011] Preferably, the wall is formed by using a flexible mold bag and pouring concrete inside.

[0012] Preferably, a plurality of steel strips are evenly anchored on the wall.

[0013] Preferably, a plate is installed at the bottom end of the support column, and the plate is in contact with the ground and fixed by bolts.

[0014] Compared with the prior art, the beneficial effect of the utility model is: by anchoring the steel belt on the wall surface, fixing the support plate on the top of the two walls by anchor rods, and then connecting multiple support plates together by connecting rods, the overall strength is improved, the compression and force-bearing capacity of the wall is enhanced, and the safety of the coal mine is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the support plate of the utility model.

[0017] In the figure: 1. wall; 2. support plate; 3. support column; 4. support rod; 5. connecting rod; 6. steel belt; 7. through hole; 8. anchor rod. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0019] Example

[0020] See also Figure 1-2 The utility model provides a technical solution: a wall structure for retaining a tunnel along the goaf, comprising a plurality of walls 1, a support plate 2 is installed above the joint of the plurality of walls 1, two support columns 3 are symmetrically installed on the support plate 2, and the bottom ends of the two support columns 3 are fixed to the ground;

[0021] Through holes 7 are symmetrically formed on both sides of the support plate 2 , and connecting rods 5 are installed between the multiple support plates 2 . Both ends of the connecting rods 5 pass through the inside of the through holes 7 and are installed with nuts.

[0022] like Figure 2 As shown: the support plate 2 is "U"-shaped, and reinforcing ribs are integrally formed on the inner side of the support plate 2; through the above arrangement, reinforcing ribs are integrally formed inside the U-shaped support plate 2, which can improve the overall strength of the support plate 2 and avoid the situation where both sides of the U-shaped support plate 2 are stretched and deformed.

[0023] like Figure 1 and Figure 2 As shown: the support plate 2 and the wall 1 are fixedly connected via a plurality of anchor rods 8; through the above arrangement, the support plate 2 can be firmly fixed on the wall 1, thereby preventing the support plate 2 from falling off.

[0024] like Figure 2As shown: a plurality of support rods 4 are evenly installed between the two support columns 3, and both ends of the support rods 4 are fixed by nuts; through the above settings, the support rods 4 can limit the positions of the two support columns 3, while increasing the strength between the two support columns 3, avoiding the occurrence of bending deformation.

[0025] like Figure 1 As shown: the wall 1 is formed by using a flexible mold bag and pouring concrete inside; through the above arrangement, the pouring work of the wall 1 can be completed quickly, and the solid formed has good integrity and high strength.

[0026] like Figure 1 As shown: a plurality of steel strips 6 are evenly anchored on the wall 1; through the above arrangement, the side of the wall 1 can be reinforced, avoiding deformation and damage of the side due to pressure, thereby increasing the strength of the wall 1.

[0027] like Figure 1 and Figure 2 As shown: a plate body is installed at the bottom end of the support column 3, and the plate body is in contact with the ground and fixed by bolts; through the above arrangement, the position of the support plate 2 can be restricted, avoiding the support plate 2 from tilting.

[0028] Working principle: First, pour concrete inside the flexible formwork bag to form a wall 1, install a support plate 2 above the two walls 1 through an anchor rod 8, the support plate 2 is connected to the support column 3, and then the support column 3 is fixed to the ground by bolts to further restrict and fix the position of the support plate 2, and then install a connecting rod 5 between the multiple support plates 2, so that the connecting rod 5 restricts and fixes the position between the multiple support plates 2, so that the multiple support plates 2 are connected as a whole to enhance the overall strength.

[0029] At the same time, multiple steel strips 6 are anchored on the wall 1 to further enhance the strength of the surface of the wall 1 .

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wall structure for retaining a tunnel along a gob, comprising a plurality of walls (1), characterized in that: A support plate (2) is installed above the joint of the plurality of walls (1), two support columns (3) are symmetrically installed on the support plate (2), and the bottom ends of the two support columns (3) are fixed to the ground; Through holes (7) are symmetrically provided on both sides of the support plate (2), and connecting rods (5) are installed between the plurality of support plates (2). Both ends of the connecting rods (5) respectively pass through the interior of the through holes (7) and are installed with nuts.

2. A wall structure for retaining a tunnel along the gob according to claim 1, characterized in that: The support plate (2) is "U"-shaped, and a reinforcing rib is integrally formed on the inner side of the support plate (2).

3. A wall structure for gob-side tunnel retaining according to claim 2, characterized in that: The support plate (2) and the wall (1) are fixedly connected via a plurality of anchor rods (8).

4. A wall structure for retaining a tunnel along the gob according to claim 2, characterized in that: A plurality of support rods (4) are evenly installed between the two support columns (3), and both ends of the support rods (4) are fixed by nuts.

5. The wall structure for gob-side tunnel retaining according to claim 1, characterized in that: The wall (1) is formed by using a flexible mold bag and pouring concrete inside.

6. A wall structure for retaining a tunnel along the gob according to claim 4, characterized in that: A plurality of steel strips (6) are evenly anchored on the wall (1).

7. The wall structure for gob-side tunnel retaining according to claim 1, characterized in that: A plate body is installed at the bottom end of the support column (3), and the plate body is in contact with the ground and fixed by bolts.

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