深部软岩巷道围岩稳定控制技术研究及应用  

Study on control technology of surrounding rocks in deep soft roadway and its application

作　　者：牛双建[1] 靖洪文[1] 张忠宇[1] 杨圣奇[1] 

机构地区：[1]中国矿业大学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,江苏徐州221008

出　　处：《煤炭学报》2011年第6期914-919,共6页Journal of China Coal Society

基　　金：国家自然科学基金资助项目(51074162);国家"十一五"科技支撑计划资助项目(2008BAB36B07);江苏省土木工程研究生科技创新基金资助项目

摘　　要：在对某深部矿井典型极软岩巷道矿压显现规律及特点长期现场观测结果分析和室内岩石成分及力学参数测试的基础上,分析并揭示了该矿井典型巷道围岩变形失稳机理。结合现场松动圈测试结果,针对该深部矿井典型极软岩巷道提出了初期采用主动柔性支护对破碎围岩力学性能"固"、中期预留变形量对高应力"卸"、后期采用全断面高强度和高刚度支护对其流变变形强"抗"的刚柔耦合动态加固技术。通过在该矿区集中胶带巷进行工业性试验,验证了该加固技术对深部极软岩巷道大变形具有很好的控制作用。Based on the analysis and summary of the deformation characteristics for deep extremely soft roadway of a mine and the results of rock composition and mechanical parameters in laboratory test,deformation instability mechanism of surrouding rocks was revealed.Taking into account the thickness of broken rock zone,a new rigid-yielding coupling dynamic reinforcement technology was proposed for the deep extremely soft roadway.Firstly,an active flexible support technology was adopted in order to enhance the mechanics parameters of broken surrounding rocks;secondly,to promote high-stress transfer to the deep surrounding rock,a certain deformation reserved;at last,using a whole cross-section of high strength and high stiffness support to withstand the strong rheology of deep soft roadway.The engineering application result shows that the rigid-yielding coupling dynamic reinforcement technology can effectively control the large deformation of deep extremely soft roadway.

关 键 词：深部开采 极软岩巷道 围岩控制 刚柔耦合动态加固技术 矿压显现 

分 类 号：TD325.1[矿业工程—矿井建设]