摘要
结合新汶矿务局孙村矿深部破碎围岩开拓巷道实际,在对巷道底鼓机理研究的基础上,利用有限差分软件FLAC2D对底板加固前后顶底板移近量、围岩塑性区、拉应力区发展状况进行了数值模拟和分析。现场观测结果表明,对于深部工程软岩支护问题,在控制顶板和两帮的同时,更需要注重底板的加固,这样才能保证深部巷道围岩整体的稳定性。
Combining with the practical situation of development roadway in broken surrounding rocks in Suncun Colliery of Xinwen Coal Mine Bureau, on the basis of study on the mechanism of floor heave of roadway, numerical simulations were made with FLAC2Don the displacement of roof to floor, the development of the plastic zone and tensile stress zone in surrounding rocks before and after reinforcing the floor of roadway. The in - situ observation indicated that for the roadway in soft rocks it is necessary to reinforce the floor, roof and two sides, but special attention should be also paid to the reinforcing of floor, so that the integral stability of surrounding rocks of deep roadway can be ensured.
出处
《矿业研究与开发》
CAS
北大核心
2007年第6期30-32,共3页
Mining Research and Development
基金
高等学校博士学科点专项科研基金课题(20020290010)
关键词
深部开采
巷道底鼓
围岩稳定性
数值模拟
Deep mining, Floor heave, Stability of surrounding rock, Numerical simulation
