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Large-dip-angle soft coal seam roadway high-slope collaborative anchor protection structure and construction method

A technology of soft coal seam and construction method, which is applied in the direction of tunneling, earthwork drilling and installation of bolts, etc., can solve the problems that the stability and safety of the roadway cannot be guaranteed, and achieve the effect of simple construction and guaranteed stability

Pending Publication Date: 2022-07-05
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above analysis, the present invention aims to provide a high-side collaborative anchor protection structure and construction method for roadways in soft coal seams with a large dip angle, so as to solve the problem that the existing support structures cannot guarantee the stability and safety of the roadway

Method used

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  • Large-dip-angle soft coal seam roadway high-slope collaborative anchor protection structure and construction method
  • Large-dip-angle soft coal seam roadway high-slope collaborative anchor protection structure and construction method
  • Large-dip-angle soft coal seam roadway high-slope collaborative anchor protection structure and construction method

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Embodiment 1

[0037] An embodiment of the present invention, such as Figure 1 to Figure 5 As shown in the figure, a high-top cooperative anchoring structure for a roadway with a large inclination angle of soft coal seam is disclosed, which includes a 7-type pallet 2, a first anchor cable 1 and a guard beam 4. The 7-type pallet 2 is anchored, and the guard beam 4 is installed along the high-top and locked with the 7-type pallet 2 to support the high-top coal body of the roadway.

[0038] The cooperative anchoring structure of this embodiment uses the first anchor cable and the guard beam 4 to perform cooperative anchoring. On the one hand, the guard beam 4 and the steel wire mesh limit the deformation and damage of the soft coal body and the fins, and on the other hand, through the first anchor beam 4 and the steel wire mesh An anchor cable and a 7-type pallet lock the guard beam 4 to a relatively deep stable rock mass. When the high-cut coal body produces a greater pressure on the guard be...

Embodiment 2

[0084] An embodiment of the present invention discloses a method for constructing a high-top collaborative anchoring structure for a roadway with a large inclination angle in a loose and soft coal seam according to Embodiment 1, which includes the following steps:

[0085] Step 1: When the roadway is excavated, according to the inclination of the coal seam, the roadway is driven along the roof of the coal seam, and along the roadway excavation direction, the high side of the roadway is composed of the coal body side and the rock body side, and the roadway is not broken during the tunneling.

[0086] like figure 1 As shown, set the vertical height of the coal body of the roadway to be h 1 , the vertical height of the rock mass is h 2 , the height of the support beam 4 is h 3 , then the vertical height of the high top h=h 1 +h 2 . Set the dip angle of the coal seam as θ 1 , then the angle between the coal seam and the vertical line θ=90°-θ 1 .

[0087] Step 2: After the ...

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Abstract

The invention relates to a large-dip-angle soft coal seam roadway high-slope collaborative anchor protection structure and a construction method, belongs to the technical field of roadway high-slope safety and stability control, and solves the problem that an existing supporting structure cannot guarantee stability and safety of a roadway. The large-dip-angle soft coal seam roadway high-side cooperative anchor protection structure comprises a 7-shaped tray, a first anchor cable and a side protection beam, the first anchor cable is installed at the position, close to a high side, of a top plate, the 7-shaped tray is used for anchoring, and the side protection beam is installed along the high side and locked with the 7-shaped tray. According to the collaborative anchoring and protecting structure, collaborative anchoring and protecting are conducted through the first anchor cable and the side protecting beam, the side protecting beam is locked to a deep stable rock mass through the first anchor cable and the 7-shaped tray, when a high-side coal body generates large pressure on the side protecting beam, stress can be transferred to the deep rock mass of a roadway top plate through the first anchor cable and the 7-shaped tray, collaborative bearing is achieved, and the safety of the roadway top plate is improved. Therefore, the stability of the roadway high side is ensured.

Description

technical field [0001] The invention relates to the technical field of safety and stability control of roadway high-tops, in particular to a large-angle loose-soft coal seam roadway high-top collaborative anchor protection structure and construction method. Background technique [0002] The high dip angle coal seam occupies a considerable proportion in my country's coal reserves, and even becomes the main coal seam of some mines, and the coal seam dip angle of some mines is between 20 and 50°. In the roadway of high dip angle coal seam, the angle formed by the direction of rock gravity and the direction of rock bedding becomes smaller, and the force of gravity along the bedding direction increases. Coupled with the actual needs of roadway layout, the phenomenon of "the roof and floor form the roadway, and the coal seam forms the roof and floor" often occurs. Due to the uneven distribution of coal and rock mass around the roadway, the deformation and failure characteristics ...

Claims

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Application Information

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IPC IPC(8): E21D21/00E21D20/00E21D9/00
CPCE21D21/0086E21D20/00E21D9/00E21D20/003Y02E10/20
Inventor 龙景奎乞朝欣曹佐勇陶笑徐文发许俊峰田唯标张由飞杜恒安禹波余文凯贾波其他发明人请求不公开姓名
Owner CHINA UNIV OF MINING & TECH