Gob-side entry retaining anchor rod truss supporting device for paste filling working face

Abstract

The utility model belongs to the field of underground coal mine supporting, and particularly relates to a gob-side entry retaining anchor rod truss supporting device for a paste filling working face, which comprises a plurality of longitudinal supporting beams, a plurality of cross beams are arranged between adjacent longitudinal supporting beams, each longitudinal supporting beam comprises a stand column, a top seat and a bottom seat are respectively welded at the upper end and the lower end of each stand column, and the top seat and the bottom seat are arranged on the vertical supporting beams. The top seat, the stand column and the base are fixedly connected with the side wall of a roadway through anchor rods, the top seat makes contact with a gob-side roadway top plate, the stand column makes contact with a filling body, the base makes contact with a gob-side roadway bottom plate, and a plurality of cushion blocks are evenly arranged on the back face of the cross beam and make contact with the filling body. The gob-side roadway bottom plate, the filling body and the gob-side roadway top plate are connected through the longitudinal supporting beams and the cross beams to form an integral bearing structure, lateral constraint on the filling body is achieved, and meanwhile deformation of the gob-side roadway top plate can be prevented.

Description

Technical Field

[0001] The utility model belongs to the field of underground coal mine support, and specifically relates to an anchor truss support device for gob-side lane retention in a paste filling working face. Background Art

[0002] At present, paste filling technology has become the main technical means for mining "three-down" pressure coal, water conservation mining and disaster management in goaf areas. The use of paste filling technology can greatly increase the recovery rate of underground resources and avoid damage to the surface ecological environment. Paste filling coal mining technology can achieve green mining in the coal industry, with significant economic and social benefits.

[0003] After paste filling is carried out on the underground working face of a coal mine, the filling body forms a reliable support for the overlying rock strata, and the mine pressure phenomenon is not obvious. The technology of retaining lanes along the goaf can be used to reduce the amount of tunnel excavation engineering, and at the same time, the coal pillars protecting the lanes in the adjacent sections can be eliminated, which can further improve the recovery rate of coal resources. Under the condition of retaining lanes along the goaf of the paste filling working face, since the side of the filling body is facing the void, tensile stress may occur on the surface of the filling body under the action of the overburden pressure, resulting in damage; in addition, due to the lack of connection between the filling paste and the roof during the filling process, the deformation of the retained lane may be increased. Therefore, it is necessary to develop an anchor truss support device to connect the filling body and the top and bottom plates to form an integral bearing structure, to laterally constrain the filling body, and to control the deformation of the top and bottom plates of the goaf-side tunnel. Utility Model Content

[0004] In view of the above problems, the utility model provides an anchor truss support device for gob-side lane retaining in a paste filling working face.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An anchor truss support device for an empty tunnel in a paste filling working face comprises a plurality of longitudinal support beams. A plurality of cross beams are arranged between adjacent longitudinal support beams. The longitudinal support beams comprise columns. A top seat and a base are respectively welded to the upper and lower ends of the columns. The top seat, the columns and the base are fixedly connected to the tunnel side walls through anchor rods. The top seat contacts the top plate of the empty tunnel, the columns contact the filling body, and the base contacts the bottom plate of the empty tunnel. A plurality of pads are evenly arranged on the back of the cross beams, and the pads contact the filling body.

[0007] Furthermore, a receiving groove is provided on the column, the crossbeam is installed in the receiving groove, a wedge groove is provided on the crossbeam near the receiving groove, and a locking wedge block is installed in the wedge groove to achieve a fixed connection between the crossbeam and the column.

[0008] Furthermore, the column is a channel steel, and the top seat and the base are triangular wedge-shaped bodies.

[0009] Furthermore, the height distance between adjacent beams is 600-800 mm.

[0010] Compared with the prior art, the utility model has the following advantages:

[0011] The utility model connects the bottom plate, filling body and roof plate of the tunnel along the goaf through longitudinal support beams and cross beams to form an integral bearing structure, thereby realizing lateral constraint on the filling body and preventing deformation of the roof plate of the tunnel along the goaf.

[0012] The utility model realizes the assembly of the cross beam and the longitudinal support beam through the receiving groove, the wedge groove and the locking wedge block, and has the advantage of convenient installation and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the gob retention along the paste filling working face.

[0014] Figure 2 This is a usage state diagram of the utility model.

[0015] Figure 3 It is a structural schematic diagram of the utility model.

[0016] Figure 4 It is a structural schematic diagram of the center column of the utility model.

[0017] Figure 5 It is a structural schematic diagram of the cross beam in the utility model.

[0018] In the figure, there are longitudinal support beam 1, cross beam 2, spacer block 3, wedge groove 4, locking wedge block 5, column 101, top seat 102, base 103, anchor rod 104, receiving groove 105, filling body A, bottom plate of goaf roadway B, solid coal C, and top plate of goaf roadway D. DETAILED DESCRIPTION

[0019] In order to further illustrate the technical solution of the present invention, the present invention is further described below through embodiments.

[0020] like Figures 1 to 5As shown, a paste filling working face along the empty roadway anchor truss support device comprises a plurality of longitudinal support beams 1, a plurality of cross beams 2 are arranged between adjacent longitudinal support beams 1, the height distance between adjacent cross beams 2 is 600-800mm, the longitudinal support beam 1 comprises a column 101, a top seat 102 and a base 103 are welded to the upper end and the lower end of the column 101 respectively, the column 101 is a channel steel, the top seat 102 and the base 103 are triangular wedge-shaped bodies, the top seat 102, the column 101 and the base 103 are fixedly connected to the side wall of the roadway through an anchor rod 104, the top seat 102 is in contact with the top plate D of the empty roadway, the column 101 is in contact with the filling body A, the base 103 is in contact with the bottom plate B of the empty roadway, and a plurality of pads 3 are evenly arranged on the back of the cross beam 2, and the pads 3 are in contact with the filling body A.

[0021] A receiving groove 105 is provided on the column 101, and the crossbeam 2 is installed in the receiving groove 105. A wedge groove 4 is provided on the crossbeam 2 near the receiving groove 105, and a locking wedge block 5 is installed in the wedge groove 4 to achieve a fixed connection between the crossbeam 2 and the column 101.

[0022] The above shows and describes the main features and advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes that fall within the meaning and scope of the equivalent elements of the claims in the utility model.

[0023] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An anchor truss support device for gob-side entry retention in a paste filling working face, characterized in that: The invention comprises a plurality of longitudinal support beams (1), a plurality of cross beams (2) are arranged between adjacent longitudinal support beams (1), the longitudinal support beams (1) comprise columns (101), a top seat (102) and a base seat (103) are respectively welded to the upper end and the lower end of the columns (101), the top seat (102), the columns (101) and the base seat (103) are all fixedly connected to the side wall of the tunnel through anchor rods (104), the top seat (102) is in contact with the top plate D of the tunnel along the empty space, the columns (101) are in contact with the filling body A, the base seat (103) is in contact with the bottom plate B of the tunnel along the empty space, and a plurality of pads (3) are evenly arranged on the back of the cross beams (2), and the pads (3) are in contact with the filling body A.

2. The anchor truss support device for gob-side entry retaining in a paste-filled working face according to claim 1, characterized in that: A receiving groove (105) is provided on the column (101), the crossbeam (2) is installed in the receiving groove (105), a wedge groove (4) is provided on the crossbeam (2) near the receiving groove (105), and a locking wedge block (5) is installed in the wedge groove (4) to achieve a fixed connection between the crossbeam (2) and the column (101).

3. The anchor truss support device for gob-side entry retaining in a paste-filled working face according to claim 1, characterized in that: The column (101) is a channel steel, and the top seat (102) and the base (103) are triangular wedge-shaped bodies.

4. The anchor truss support device for gob-side entry retaining in a paste-filled working face according to claim 1, characterized in that: The height distance between adjacent cross beams (2) is 600-800 mm.

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