Roadway support method adopting U-shaped canopy frame support structure body

Abstract

The invention discloses a roadway support method adopting a U-shaped canopy frame support structure body, and relates to the roadway support technical field. The roadway support method adopting the U-shaped canopy frame support structure body aims at solving the problem of large deformation of roadway, and comprises the following steps: anchor net spraying support is adopted on the roadway; after the anchor net spraying support is adopted, U-shaped canopy frame strengthening supports are installed in a centralizing mode; after the U-shaped canopy frame strengthening supports are completed, U-steels are used to respectively connect leg parts and top parts of neighboring U-shaped canopy frames, U-shaped canopy frame supports are formed, supporting power of a single U-shaped canopy frame is greatly increased, and stability of surrounding rock of the roadway is improved. The roadway support method adopting the U-shaped canopy frame support structure body is applied to support of underground roadway, especially support of underground deep roadway.

Description

technical field [0001] The invention relates to the technical field of roadway support for deep roadways or weak surrounding rocks, in particular to a method for supporting deep roadways. Background technique [0002] At present, with the continuous and rapid development of my country's national economy, the demand for energy, especially coal resources, is increasing, and shallow coal resources are gradually scarce. my country's coal mining, especially the eastern mining areas, has mostly entered the deep mining category. my country's coal reserves buried below 1000m are 2.95×10 12 t, accounting for about 53% of my country's total coal reserves. According to incomplete statistics, there are already hundreds of pairs of mines in my country with a mining depth exceeding 1000m at this stage. , the average mining depth of my country's key state-owned coal mines is increasing year by year at a rate of 10-25m / a. With increasing complexity and increasing depth, more and more deep ...

AI Technical Summary

Problems solved by technology

[0003] Judging from domestic and foreign literature, there are still no effective means to solve the problem of large deformation and difficult support of deep soft rock roadways at home and abroad. distribution, stress concentration in the surrounding rock of the roadway, and many unknown solutions to the failure mechanism of the deep roadway, all of which make the deep roadway support technology a major technical problem in deep mining engineering

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