Many dynamic disturbances often lead to local instability of roadway surrounding rock and mining workplace and result in rock burst in coal mining.
煤矿生产中存在着大量的动力扰动，常导致采矿巷道和采场围岩局部失稳，诱发冲击矿压发生。
The numerical analogy has been adopted to study the mechanic features influencing stress distribution in coal and rock around the roadway in order to control rock burst disasters.
为了治理冲击矿压灾害，采用数值模拟方法研究了井巷周围煤岩体的力学特性对应力分布的影响。
The prerequisite of rock burst occurrence is that the elastic energy in coal and rock mass around coal mine roadway and stope has accumulated enough.
冲击地压发生的前提是矿山井巷和采场周围的煤岩体中储存了足够的弹性能。
To analyze the deformation characters of soft rock roadway in Fengshuigou Coal Mine, provide corresponding preventive measures and have made good technology economic results.
分析了风水沟煤矿软岩巷道变形的特点，提出了相应的防治措施，在软岩支护方面取得了较好的支护效果和经济效益。
The phenomenon of underground pressure and principle of surrounding rock control of deep shaft coal roadway are introduced.
分析深井煤层巷道围岩变形特征和支护失效的原因，提出此类巷道的内外结构耦合平衡支护原理。
The surrounding rock of roadway is a compound structure consisted of roof, floor and sides. The sides of extraction opening are the weak coal mass, which affect the stability of floor directly.
巷道围岩是由顶板、底板、两帮组成的复合结构体，回采巷道两帮为软弱煤体，直接影响到底板的稳定性。
The results show that there are great differences in the stress of roadway surrounding rock, and the stress and strain in coal pillar while the fracture line of main roof locates in different places.
研究表明，基本顶断裂线位于不同位置时，巷道围岩应力、煤柱应力及应变差异较大。
The results show that there are great differences in the stress of roadway surrounding rock, and the stress and strain in coal pillar while the fracture line of main roof locates in different places.
研究表明，基本顶断裂线位于不同位置时，巷道围岩应力、煤柱应力及应变差异较大。
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