A support structure and support method for coal mines passing through old kiln goaf

Abstract

The invention discloses a support structure and a support method for a coal mine that passes through the goaf of an old kiln. The support structure for a coal mine that passes through the goaf of an old kiln includes a temporary support structure and a permanent support structure. The temporary support structure includes advanced pipe shed, metal mesh, U-shaped steel shed and concrete. The advanced pipe shed is composed of several advanced pipes installed in the full section of the goaf of the old kiln and arranged circumferentially along the outline of the roadway. The metal mesh is bound to the advanced pipe. On the shed, a number of U-shaped steel sheds are set under the metal mesh, and the concrete spraying is wrapped and covered on the advanced pipe shed, metal mesh and U-shaped steel shed to form a temporary support structure; the permanent support structure includes steel structure and concrete, and the concrete is poured on the A permanent support structure is formed in the reinforced structure, and the permanent support structure is arranged inside the temporary support structure. The invention effectively prevents the problem that the surrounding rock in the goaf of the old kiln is loose, broken and easy to collapse, and at the same time, can better isolate hidden disaster-causing factors such as gas and water existing in the goaf of the old kiln.

Description

technical field [0001] The invention belongs to the field of coal mine excavation safety, and in particular relates to a support structure and a support method for coal mines passing through old kiln goafs. Background technique [0002] Huangling No. 1 Coal Mine No. 1 Coal Mine Disaster Control Exploration Lane Excavation During the construction process, the goaf of the old kiln was exposed. If it continues to extend according to the design orientation, it will face the problem of crossing the complex strata of the old kiln goaf. The treatment and exploration roadway has a large cross-section, long service life, and high operational safety requirements. It is necessary to do a good job of supporting the goaf of the old kiln. [0003] Since the surrounding rock in the old kiln goaf is loose, broken and prone to collapse, and there may be other hidden disaster-causing factors such as gas and water, considering the large cross-section of the disaster control and exploration roa...

AI Technical Summary

Problems solved by technology

[0003] Since the surrounding rock in the old kiln goaf is loose, broken and prone to collapse, and there may be other hidden disaster-causing factors such as gas and water, considering the large cross-section of the disaster control and exploration roadway in Sipan District, long service life and high operational safety requirements , it is necessary to do a good job of supporting the goaf of the old kiln, but there is no good solution to this problem at present

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