Roadway support device for dynamic pressure roadway and retaining roadway along goaf

A technology of roadway support and empty roadway retention, applied in pillars/supports, mining equipment, earth-moving drilling, etc., can solve the problems of large construction, cumbersome, slow operation, etc. quick effect
CN103485801AInactive Publication Date: 2014-01-01CHINA UNIV OF MINING & TECH (BEIJING)
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
CHINA UNIV OF MINING & TECH (BEIJING)
Publication Date
2014-01-01
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a roadway support device used for a dynamic pressure roadway and a retaining roadway along a goaf. The device comprises a hollow steel pipe support, wherein the hollow part of the hollow steel pipe support is a concrete accommodating space; a grouting port which is communicated with the hollow part of the hollow steel pipe support is formed in the lower part of the hollow steel pipe support; a vent hole which is communicated with the hollow part of the hollow steel pipe support is formed in the top of the hollow steel pipe support; the concrete accommodating space of the hollow part of the hollow steel pipe support is filled with concrete concretion; further, a pressure avoiding layer is arranged between the steel pipe support and a roadway top plate; a pillar shoe is generally arranged between the steel pipe support and a roadway bottom plate. According to the support device, the hollow steel pipe support is filled with the concrete concretion, so that the support device has the advantages that the supporting force is large, the stability is good, the construction speed is rapid and the repeated use is realized, and the support device is capable of effectively supporting the dynamic pressure roadway and the retaining roadway along the goaf.
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Description

technical field

[0001] The invention relates to the field of mine roadway support, in particular to a roadway support device suitable for dynamic pressure roadways and gob-side entry retention in mines. Background technique

[0002] Dynamic pressure roadway support is one of the difficult problems in coal mine roadway support. The technology of gob-side roadway retention can better realize the roadway protection without coal pillars. It is a major reform of coal mining technology. This technology can reasonably develop coal resources , improve the recovery rate of coal resources, which is conducive to the safe production of mines and the improvement of economic benefits of mines.

[0003] The existing support technologies for gob-side entry retaining mainly include anchor net cable support technology and roadside filling technology, among which anchor net cable support can strengthen the strength of surrounding rock, improve the bearing capacity of broken surrounding rock, a...

Claims

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