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An underground surrounding rock fault support device and support method

A supporting device and fault technology, which is applied in shaft equipment, shaft lining, underground chambers, etc., can solve the problems that cannot meet the stability requirements of surrounding rocks, and achieve the effect of improving self-supporting capacity and stability, and increasing filling radius

Inactive Publication Date: 2018-06-22
SHANDONG UNIV OF SCI & TECH
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  • Claims
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Problems solved by technology

In view of the influence of the caving zone, crack zone and overall bending zone of the overlying strata in the fault zone on the stability of the surrounding rock, when the displacement of the fault surrounding rock is serious and the compressive stress is concentrated, the above support methods cannot meet the requirements of the surrounding rock in the fault zone of the coal seam roadway. Stability requirements

Method used

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  • An underground surrounding rock fault support device and support method
  • An underground surrounding rock fault support device and support method
  • An underground surrounding rock fault support device and support method

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Embodiment Construction

[0038] A kind of downhole surrounding rock fault support device and support method of the present invention are realized in this way, further elaborated below:

[0039] 1) Comprehensively use advanced geological exploration and other means to survey the surrounding rock faults, and then arrange advanced drilling, drill holes with a drilling rig on the side wall of the fault roadway, and drill a central hole at the height center position, with a diameter of φ20mm and a depth of 2800mm; the center holes are spaced in pairs 2000mm, the drilling direction of the central hole is perpendicular to the tangent direction of the circumscribed circle of the fault roadway;

[0040] 2) With the center hole as the center, drill support holes. The six support holes are distributed in a regular hexagon around the center hole. The distance between the support holes is 1000mm. The direction of the support hole mentioned above is perpendicular to the tangent direction of the circumscribed circle...

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Abstract

The invention discloses a support device and support method for an underground surrounding rock fault fracture, and discloses a support device and a support method for supporting a fault crack in an underground surrounding rock. The support can effectively improve the integrity and self-bearing capacity of the surrounding rock in the fault zone. It is characterized in that the three hollow grouting pipes are evenly distributed on the hollow support, the outer surfaces of the three hollow grouting pipes are respectively provided with grouting holes, and the winding coil is wound on the outside of the three hollow grouting pipes as a whole. When the winding coil is wound, the grouting holes cannot be covered, the anchor head is screwed in and placed on one end of the hollow bracket, and connected to one end of the three hollow grouting pipes respectively, and the grouting connecting tube is respectively connected to the three hollow grouting pipes The connecting pipe is placed in the middle of the grouting connection cylinder, the backing plate is placed on the connecting pipe, the anode column passes through the backing plate and the connecting pipe in turn, and placed in the hollow bracket, and the protective bag is placed in three hollow grouting tube outside.

Description

technical field [0001] The invention relates to an underground surrounding rock fault supporting device and a supporting method, which relate to a supporting device and a supporting method used for supporting underground surrounding rock fault fissures, and belong to the technical field of surrounding rock supporting. In particular, it relates to a supporting device and a supporting method which can use an alternating current electric field to support the surrounding rock of a coal seam roadway in a fault, and can effectively improve the integrity and self-bearing capacity of the surrounding rock in the fault area. Background technique [0002] When coal mine resources are integrated, the restructured mine is often composed of multiple small coal kilns. After the first mining of the small coal kilns, the balance of the original rock force is destroyed, and the stress of the original rock in the goaf changes. In order to find a new force balance point And redistribution, when...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/00E21D11/10
CPCE21D11/006E21D11/105E21D11/107
Inventor 江东海王同旭马文强蒋子龙曲孔典张恒宋学峰
Owner SHANDONG UNIV OF SCI & TECH
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