Method for mine underground deep engineering support

Abstract

The invention relates to a method for mine underground deep engineering support. The method is characterized in that a double-layered flexible rigid excess limited yielding type relative coupling support mode is adopted in the support process. According to the novel support principle for establishing deep engineering of a mine, namely the double-layer flexible rigid excess limited yielding type relative coupling support theory, a support process and a matched construction method of deep double-layered flexible rigid excess limited yielding type relative coupling of the mine are established. By adopting the method, the purposes that the deep engineering deformation and cracking of the mine are effectively inhibited, the service life of a tunnel is prolonged, the engineering repairing amount is reduced, the cost is reduced, and the normal construction, production and security orders under wells are ensured are achieved.

Description

technical field [0001] The invention relates to a method for underground deep engineering support of a mine, which relates to an underground deep engineering support technology of a mine, in particular to a method for a mine double-layer soft-rigid limit-excess pressure-relative coupling support technology. Background technique [0002] Over the years, the support of most underground mine projects has always adhered to the new Austrian method "flexible pressure" support principle. It is scientific and reasonable to apply it within the scope of tunnel engineering and shallow underground mine engineering. However, deep mine projects are supported according to this principle. Most of the projects have gone through the process of excavating before and returning or repairing many times, resulting in a short use time of the roadway, a large amount of repairs, and a double increase in support costs. A large number of support practices have been verified: the new Austrian method "f...

AI Technical Summary

Problems solved by technology

However, deep mine projects are supported according to this principle, and most of the projects have gone through the process of digging before digging and returning or repairing many times, resulting in a short use time of the roadway, a large amount of repairs, and a doubled increase in support costs.

A large number of support practices have been verified: the new Austrian method "flexible pressure" support principle is not suitable for support in the deep mine environment of high ground stress, high disturbance and extremely soft broken rock mass, and cannot control excessive deformation or deformation of the deep surrounding rock in the mine. Harmful deformation