Support structure for crossing goaf of old kiln in coal mine and support method thereof

Abstract

The invention discloses a support structure for crossing the goaf of an old kiln in a coal mine and a support method thereof. The support structure for crossing the goaf of an old kiln in a coal mineincludes a temporary support structure and a permanent support structure. The temporary support structure includes a lead pipe shed, a metal mesh, U-shaped steel sheds and concrete. The lead pipe shedis composed of a plurality of lead conduits which are installed in the full section of the goaf of an old kiln and are circularly arranged along the contour of the roadway. The metal mesh is tied tothe lead pipe shed. The U-shaped steel sheds are arranged under the metal mesh. After being sprayed, the concrete wraps and covers the lead pipe shed, the metal mesh and the U-shaped steel sheds to form the temporary support structure. The permanent support structure includes a steel structure and concrete. The concrete is poured into the steel structure to form the permanent support structure. The permanent support structure is arranged on the inner side of the temporary support structure. The support structure and the support method can prevent the problem that the surrounding rock of the goaf of an old kiln is loose and fragmented and easy to collapse, and can better isolate the hidden disaster causing factors such as gas and water in the goaf of an 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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