岩石风化对煤矿巷道稳定性的影响  

The Influence of Rock Weathering on Surrounding Rocks Stability

作　　者：蒋玉波[1,2] 宋宏伟[1,2] 袁鹏[1,2] 

机构地区：[1]中国矿业大学力学与建筑工程学院,江苏徐州221116 [2]深部岩土力学与地下工程国家重点实验室,江苏徐州221116

出　　处：《煤矿安全》2014年第5期208-211,共4页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(50978251)

摘　　要：以煤矿常见岩石的耐久性试验为基础,采用理论与数值模拟分析相结合的方法,研究了岩石风化对煤矿巷道稳定性的影响。风化后围岩的主要变化趋势为岩石自身性质劣化导致巷道变形增加、塑性区扩大、周边应力降低且该趋势随风化程度的增加而加速变化。不同断面下风化对矩形断面影响最大,相同断面下埋深越大则影响越大;对于不同分层岩体,其风化前后受力与变形存在较大差异。This paper studies the influence of rock weathering on the stability of surrounding rocks on the basis of the durability test of rocks and theory analysis and numerical simulation methods. Weathering will make the roadway deformation increased and plastic zone expanded which are caused by nature deterioration of rock itself, The stress of surrounding rocks will decrease. These trends are accelerating with the increase of the weathering degree. The worst section is the rectangular cross section. The influence of weathering in deep condition is larger than shallow in the same section. For different layered rock masses, the stress and deformation is different.

关 键 词：岩石风化 耐久性试验 巷道稳定性 数值模拟 

分 类 号：TD322.4[矿业工程—矿井建设]