In order to improve the stability of the excavation roadway under the influence of faults,a range of 2 m of loosening zone was determined based on the drilling observation results of the left,right,and roof positions of the roadway.Subsequently,grouting reinforcement was carried out in the fault failure zone area combined with permanent support scheme,to increase the maximum anchoring force of the anchor rod from 30 kN to 90 kN,effectively controlling the subsidence of the roof and solving the problem of stability of the excavation face passing through the fault.
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