她救了再见我 » She was rescued me goodbye 工作面顶板压力 » Face pressure roof 然后，我会试着实现我的梦想，例如环球旅游，组建乐团，学习中国文化等 » Then, I will try to achieve my dream, such as a glo...
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By using field observation and numerical simulation method, the influence of fracture structure plane on the underground pressure and the roof stability of working face are systematically studied.
通过对现场观测和数值模拟分析，系统研究了断裂结构面对回采工作面矿压分布和顶板稳定性的影响。
Controlling roof accidents and preventing the occurrence of bursting underground pressure are the priorities and difficulties to mine deeper isolated pillar face.
控制顶板事故，防范冲击矿压的发生是开采埋深较大的孤岛煤柱工作面的重点和难点。
The roof management, roof pressure computing, assurance coefficient checking are introduced. Three kinds of protecting methods of working face management are expounded.
从顶板管理、顶板压力计算、 安全系数校核方面进行了介绍，并且在大倾角工作面三防措施管理方面进行了详细的阐述。
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