南山煤矿构造应力区软岩巷道变形破坏机理研究  

Study on deformation and failure mechanism of the tectonic stress areas' soft rock roadway in Nanshan coal mine

作　　者：郭志飚[1] 李二强[1,2] 张跃林[1] 邓小卫[1] 王炯[1] 

机构地区：[1]中国矿业大学北京深部岩土力学与地下工程国家重点实验室、力学与建筑工程学院,北京100083 [2]贵州工程应用技术学院土木建筑工程学院,贵州毕节551700

出　　处：《采矿与安全工程学报》2015年第2期267-272,共6页Journal of Mining & Safety Engineering

基　　金：国家自然科学基金项目(51374214,41040027);中央高校基本科研业务费专项资金项目(2009QL06)

摘　　要：本文通过对南山煤矿东部构造应力区的现场调研,总结了东部区巷道常见的破坏特征,选取-120总回风巷道作为研究对象,利用数值模拟再现了无支护和普通锚网索支护下构造应力区软岩巷道的变形破坏过程,研究了其变形破坏机理。研究表明,影响构造应力区软岩巷道的破坏原因为赋存应力高、岩体强度低以及原支护不适应深部软岩大变形等。结合破坏机理分析了在构造应力作用下围岩与支护体的相互作用关系,概括了其变形破坏过程。Based on the site investigation of the tectonic stress area in eastern zone of Nanshan coal mine, the common failure characteristics of the roadway has been summarized in this paper.-120 total return wind roadway has been selected to study the deformation and failure mechanisms, reproducing the deformation and failure process of the soft rock roadway in tectonic stress areas under no support or ordinary bolt net support, by using FLAC3 D and studies. The results show that the reasons of roadway damage include high stress, low rock strength and the inadaptaion of the original support to deep soft rock deformation. Finally, combining with the deformation and failure mechanisms, the relationship between surrounding rock and supporting body has been analysed, and their deformation and failure processes has been generalized.

关 键 词：构造应力区 变形破坏机理 围岩与支护体作用 

分 类 号：TD322[矿业工程—矿井建设]