Method for mine underground deep engineering support

A deep and mine technology, applied in the field of double-layer soft-rigid limited excess pressure relative coupling support in mines, can solve the problem of short service time of roadway, unable to control excessive deformation or harmful deformation of surrounding rock in deep mine, and inadaptability

Inactive Publication Date: 2015-04-08
JINCHUAN GROUP LIMITED
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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 practic

Method used

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Examples

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Embodiment Construction

[0015] A support method for underground deep engineering in mines. The support process adopts a double-layer flexible rigid limit excess pressure type relative coupling support method; the support for the integral and layered structure rock mass adopts plain spray + double-layer anchor net Spray + anchor grouting process; for the support of poor stability and broken structure rock mass, adopt plain spray + primary anchor mesh arch spraying + secondary anchor mesh spray + anchor grouting process; the critical value of double-layer spray anchor mesh to inhibit cracking deformation is 150mm .

[0016] Practice was carried out in the 400m roadway of the 1038m east section of a mining area, and the method of double-layer soft-rigid limited excess pressure relative coupling support technology was successfully applied and implemented.

[0017] (1) The stability is good, and the support technology of the overall and layered structure rock mass: plain spray + double-layer anchor net sp...

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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...

Claims

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Application Information

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IPC IPC(8): E21D11/00E21D11/10E21D20/00
CPCE21D20/02E21D20/021E21D20/026
Inventor 杨志强赵千里许瀛沛赵小平陈刚白本祥王兴国高创州
Owner JINCHUAN GROUP LIMITED
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