松散矿岩中凿岩巷道周边岩石松散圈综合治理的研究

Research on the Synthetical Administrative Ways of the Soft Rock Ring of the Driftages in Soft Rocks and Ores

介绍了会理锌矿天宝山Ⅱ号矿体凿岩巷道周边岩石松散圈对生产造成的困境，分析了松散圈形成的原因，提出了对松散矿岩中凿岩巷道周边岩石松散圈进行光面爆破、喷浆支护。

The difficult positions of the soft rock ring of the driftages in Tian-bao-shan ore body No 2 of Hui Li Zinc Mine are presented and the reasons for the soft rock ring are analysed and the synthetical administrative ways with smooth blasting, gunite lining, protecting hole bolts etc are advanced and the experiment results and experiences are obtained