Based on the influence of geological structure during the excavation of 2117 roadway in Ma Zhiliang Mine,there are many local leakage phenomena in 315～370 m section of the roadway,and the joint support effect of using traditional anchor rods(ropes)and I-beam sheds is poor,so we decided to optimize the support of local leakage area by adopting the joint support measure of"Anchor trapezoidal shed+gangue blocking bracket+artificial false top"through the technical research.Through the technical research,it is decided to adopt"anchor cable trapezoidal shed+block gang bracket+artificial false roof'joint support measures for the support optimisation of local leakage area.
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维普
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