深部高应力巷道开挖方向对稳定性影响分析研究  

Influence of Roadway Excavation Direction on Stability Under Deep and High Stress Conditions

作　　者：文兴[1,2] 皇甫风成 尚振华[1,2] 

机构地区：[1]长沙矿山研究院有限责任公司,湖南长沙410012 [2]金属矿山安全技术国家重点实验室,湖南长沙410012 [3]新疆阿舍勒铜业股份有限公司,新疆哈巴河县836700

出　　处：《矿业研究与开发》2016年第12期61-66,共6页Mining Research and Development

基　　金：湖南省科技重大专项项目(2011FJ1003)

摘　　要：在阿舍勒铜矿深部不同中段选取3个测试点,采用套孔应力解除法进行了现场地应力测试分析,准确确认深部岩体处于较高地应力状态。采用数值模拟计算方法,计算得出最大主应力与巷道轴线夹角分别为0°、30°、60°、90°时的巷道围岩位移场、应力场和塑性区云图,分析了深部高应力巷道开挖方向对其稳定性的影响,得出了高应力巷道开挖时,巷道布置方向与最大主应力方向夹角在30°以内时,高地应力对巷道稳定性影响较小的结论。stress relief method by overcoring, the in-situ rock stress was measured on site of Ashele Copper Mine, where three measurement points were designed in different sublevel of deep ore body. The conclusion was accurately determined that the ore body at deep depth of Ashele Copper Mine was in high stress state. Using numerical simulation method, the displacement field, stress field and plastic zone of roadway in three different points were calculated and obtained under the conditions that the angle between the maximum principal stress and the axis of the roadway was respectively 0°, 30°, 60° and 90°. Then, the influence of roadway excavation direction on its stability was analyzed under deep high stress conditions. It was concluded that the high in-situ stress had small impact on the stability, when the angle between the maximum principal stress and the axis of the roadway was less than 30°.

关 键 词：深部巷道 巷道布置方向 稳定性 最大主应力 原地应力测量 

分 类 号：TD322.4[矿业工程—矿井建设]