Anchor cable support method for deep soft rock roadway without stable rock stratum

A cable support and soft rock technology, which is applied in the direction of earthwork drilling, bolt installation, mining equipment, etc., can solve the problems of low construction efficiency, roadway damage, disrepair, etc., and achieve the effect of reducing support investment

Inactive Publication Date: 2015-09-02
LONGKOU MINING GRP
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  • Abstract
  • Description
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Problems solved by technology

The roadway construction cost is high, the construction efficiency is low, the roadway is seriously damaged and in disrepair

Method used

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with specific embodiments, and the advantages and characteristics of the present invention will become clearer along with the description. However, these embodiments are only exemplary and do not constitute any limitation to the scope of the present invention. It should be understood by those skilled in the art that the details and forms of the technical solution of the present invention can be modified or replaced without departing from the spirit and scope of the present invention, but these modifications and replacements all fall within the protection scope of the present invention .

[0012] The present invention relates to a kind of anchor cable support method of deep soft rock roadway without stable rock layer, it is characterized in that, comprises the following steps:

[0013] (1) Carry out anchor net spraying support on the surface of the rock formation to achieve the purpose of cont...

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PUM

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Abstract

The invention relates to an anchor cable support method for a deep soft rock roadway without stable rock stratum. The method comprises the following steps: (1), shotcrete-bolt support is performed on the surface layer of the rock stratum, rheology of surrounding rock is controlled, and anchor cable support is adopted on the basis; (2), anchor cables go deep in the rock stratum more than 4 m for anchoring; (3), enlarged bolt plates are adopted, long anchor bolts are adopted to reinforce weak parts after shotcrete-bolt, and damaged parts are reinforced with knocking and shot blasting measures. The anchor cable support method for the deep soft rock roadway without the stable rock stratum has the advantages as follows: through joint application of reinforcement support by the anchor cables, shotcrete-bolt anchor beams and the anchor bolts, problems in a support process are solved, anchor cable support of the deep soft rock roadway without the stable rock stratum is realized, U-shaped steel shed support is replaced or partially replaced, and the support investment is reduced.

Description

technical field [0001] The invention relates to an anchor cable support method for an unsteady rock formation in a deep soft rock roadway. Background technique [0002] Roadway support under soft rock conditions is a difficult problem faced by soft rock mines. As a typical soft rock mining area, Longkou mining area, its deep roadway support has always been a problem that plagues Longkuang engineers and technicians. Mine roadway pressure is high, the strength of surrounding rock is low, and the range of loose circle is wide. After the roadway is supported, the top sinks, side squeezes, and bottoms are more serious, and the reinforcement measures are generally only shotcrete, bolt reinforcement, etc. Rigid reinforcement or demolition repair is used, the reinforcement effect of spraying and bolt is poor, and the time limit is short, which is only applicable to the situation where the pressure is not large. The investment of rigid reinforcement or demolition repair and support...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D20/02E21D21/00
Inventor 张若祥王德超任尧喜丁国利倪兵义姜作华
Owner LONGKOU MINING GRP
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