High ground stress roadway support device and construction method

Abstract

The invention discloses a deep soft rock roadway support device capable of providing all-dimensional direct active support, achieving automatic yielding and adjusting roadway surface displacement anda method. The deep soft rock roadway support device comprises a roadway surrounding rock surface control system, a roadway support stress and displacement control system and a roadway internal horizontal system; and the roadway surrounding rock surface control system involves a short anchor cable, an anchoring agent, supporting plates and a roadway surrounding rock surface concrete layer, the roadway support stress and displacement control system involves steel supporting plates, hydraulic supports, hydraulic support bases, steel pipes and a hydraulic control subsystem, and the roadway internal horizontal system involves horizontal steel plates and horizontal longitudinal beams. The device is used for supporting deep soft rock roadways, broken surrounding rock roadways, island working faceroadways, multiple high ground stress roadways and first mining working face with unknown stress distribution rule and mining roadways, the device is reasonable in design, high in applicability, highin supporting strength, and achieves all-dimensional direct active supporting of roadway sections.

Description

technical field [0001] The invention belongs to the technical field of soft rock roadway support methods, in particular to a high ground stress roadway support device and a construction method. Background technique [0002] The depth of coal mining in my country is getting bigger and bigger. With the increase of burial depth, the stress in the roadway is also increasing. The problem of roadway surrounding rock control and support is becoming more and more prominent. It is no longer able to meet the requirements of the support strength of deep roadways, especially deep soft rock roadways. In addition, the high ground stress of the deep roadway comes from all directions of the roadway. It is difficult to guarantee the stability of the surrounding rock of the roadway simply by supporting a certain direction of the roadway. Multi-directional joint support of the roadway has become the mainstream of the surrounding rock control of the deep soft rock roadway. In order to realize t...

AI Technical Summary

Problems solved by technology

[0002] The depth of coal mining in my country is getting bigger and bigger. With the increase of burial depth, the stress in the roadway is also increasing. The problem of roadway surrounding rock control and support is becoming more and more prominent. It is no longer able to meet the support strength requirements of deep roadways, especially deep soft rock roadways

In addition, the high ground stress of the deep roadway comes from all directions of the roadway. It is difficult to guarantee the stability of the surrounding rock of the roadway simply by supporting a certain direction of the roadway. Multi-directional joint support of the roadway has become the mainstream of surrounding rock control in deep soft rock roadways.

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