Gob-side entry three-dimensional reinforcement filled wall structure and filling method thereof

A technology for filling walls and retaining roadways, which is applied in the direction of filling, earthwork drilling and mining, safety devices, etc., and can solve problems such as polluting the atmospheric environment, prone to landslides, and occupying land

Inactive Publication Date: 2014-02-26
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Secondly, during the excavation of coal mining tunnels, a large amount of gangue should be removed (the output of gangue is about 10% of the coal output, and the amount of gangue newly produced and piled on the surface is about 150-300 million cubic meters per year. 3 ), gangue is discharged to the ground for disposal, and is often piled up in coal mines to form gangue hills, occupying a large area of ​​land, producing various toxic and harmful gases, polluting the atmospheric environment, and prone to landslides and other geological disasters during the rainy season

Method used

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  • Gob-side entry three-dimensional reinforcement filled wall structure and filling method thereof
  • Gob-side entry three-dimensional reinforcement filled wall structure and filling method thereof
  • Gob-side entry three-dimensional reinforcement filled wall structure and filling method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] like figure 1 As shown, it is a schematic diagram of the planar structure of each part of the underground, including the upper working face coal body 3, the lower working face coal body 6, the working face coal body 2, the air return lane 1, the transportation lane 5, and the goaf 4; The three-dimensional reinforced filling wall structure 7 for gob-side entry retention is arranged in the goaf 4 near the transport entryway 5 .

[0059] like Figure 2 ~ Figure 4 As shown, the three-dimensional reinforced filling wall structure 7 of the gob-side entry retention described in the present invention includes:

[0060] The wall body 9 is cuboid, and its height is the same as that of the roadway;

[0061] A plurality of roof reinforcement bolts 11, a part of each roof reinforcement bolt 11 is buried in the wall body 9, and a part is buried in the roadway roof;

[0062] A plurality of floor reinforcing anchors 12, a part of each of the floor strengthening anchors 12 is embedde...

Embodiment 2

[0067] like Figure 2 ~ Figure 4 As shown, the three-dimensional reinforced filling wall structure 7 of the gob-side entry retention described in the present invention includes:

[0068] The wall body 9 is cuboid, and its height is the same as that of the roadway;

[0069] A plurality of roof reinforcement bolts 11, a part of each roof reinforcement bolt 11 is buried in the wall body 9, and a part is buried in the roadway roof;

[0070] A plurality of floor reinforcing anchors 12, a part of each of the floor strengthening anchors 12 is embedded in the wall body 9, and a part is embedded in the roadway floor;

[0071] A plurality of running rebars 10, a part of each running rebar 10 is embedded in the wall body 9, and a part is exposed from the left and right sides of the wall body 9;

[0072] A plurality of inclined wall anchor rods 8, each of the inclined wall anchor rods 8 completely penetrates the wall body 9, and both ends are exposed from the front and rear sides of the...

Embodiment 3

[0102] Each of the roof reinforcement bolts 11 is 1800mm long, and the length of the part embedded in the roadway roof is 700mm. Two adjacent roof reinforcement bolts 11 in the same row and two rows of roof reinforcement bolts The distance between 11 is all between 900mm.

[0103] The length of each floor reinforcement bolt 12 is 2200mm, and the length of the part embedded in the roadway floor is 1300mm, and the distance between two adjacent floor reinforcement bolts 12 in the same row is 1500mm.

[0104] The distance between 10 of the two said direction rebars in the same column and the distance between the two columns is 900mm.

[0105] The distance between two adjacent inclined wall anchor rods 8 in the same row or column is 1500 mm; the exposed parts at both ends are 30 mm long.

[0106] Before fixing the channel steel 13 by using a tray and a nut to cooperate with the threaded structure, apply an initial pre-tightening force between 50KN to the inclined wall anchor rod 8...

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Abstract

The invention discloses a gob-side entry three-dimensional reinforcement filled wall structure. The gob-side entry three-dimensional reinforcement filled wall structure comprises a wall body (9), a plurality of roof reinforcing anchor bolts (11) which are embedded inside the wall body (9) and the roof of a roadway, a plurality of floor reinforcing anchor bolts (12) which are embedded inside the wall body (9) and the floor of the roadway, a plurality of directional deformed steel bars (10) which are partially embedded inside the wall body (9), a plurality of dip wall penetration bolts (8) which penetrate the wall body (9), and a plurality of channel steels (13) which are provided with holes for the dip wall penetration bolts (8) to penetrate. Locking mechanisms fix the plurality of channel steels (13) onto the front side surface and the back side surface of the wall body (9). The gob-side entry three-dimensional reinforcement filled wall structure is simple in structure and low in filling cost and can meet the roadway side support requirements.

Description

technical field [0001] The invention relates to a gob-side entry retaining filling wall structure and a filling method thereof, in particular to a gob-side entry retaining gangue concrete three-dimensionally reinforced filling wall and a filling method thereof. Background technique [0002] After the coal mining face is mined, the roadway of the section (or lower section) on the original working face is reserved and used when the adjacent working face is mined. The remaining roadway is called gob-side entry retention. After the working face of the upper section of the mining area is mined, the roadway left along the goaf can be used as a return airway when the working face of the lower section is mined. [0003] At present, the filling technology beside the integral casting roadway has the advantages of fast resistance increase speed, large supporting capacity, good sealing performance and high degree of mechanization. The filling materials are mostly paste, concrete, high-w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F15/04E21F15/00
Inventor 付宝杰成云海冯飞胜汪颖张香苗曹光泽
Owner ANHUI UNIV OF SCI & TECH
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