焦家金矿寺庄分矿深部巷道围岩分级及支护方法研究

Study on surrounding rock classification and support method in deep roadway of Sizhuang Branch of Jiaojia Gold Mine

焦家金矿寺庄分矿进入深部开采阶段,围岩所处环境逐渐恶化,岩体裂隙发育程度大,巷道围岩出现较大变形,危及矿山的安全生产。利用岩体扫描技术对深部某水平巷道围岩裂隙信息进行采集,基于Q分级和BQ分级法对深部巷道围岩进行准确岩体质量分级,并依此提出锚杆+金属网+钢带+喷浆的联合支护方法,为矿山安全生产提供保障。

Sizhuang Branch of Jiaojia Gold Mine had entered the deep mining stage, the environment was getting worse, and the rock fracture was obvious. The surrounding rock of roadway deformed greatly, which endangered the mine safety. The information of surrounding rock fracture of a deep roadway was collected by using rock mass scanning technique, and based on Q classification and BQ classification method, the quality classification of rock mass in deep roadways was carried out. Joint support method of bolt-metal mesh-steel belt-spray was put forward, which could ensure the mine safety.