1) Unstable drift
不稳固巷道
3) roadway surrounded by highly unstable wallrock
极不稳定岩土巷道
1.
Study of temporary support technology in roadway surrounded by highly unstable wallrock;
极不稳定岩土巷道预支护技术研究
6) Roadway stability
巷道稳定性
1.
Numerical experiment on effect of circular roadway stability by intermittent joint in deep rock mass;
深部岩体中断续节理对巷道稳定性影响的数值试验
2.
Based on orthogonal design,several numerical simulation schemes of roadway stability controlled by connected fissures were built according to actual status of Lu'an mining district.
研究表明:1)贯通裂隙间距(2~4 m)小于巷宽(4 m)时,巷道围岩稳定性受裂隙控制,反之主要受巷道围岩强度的影响;2)单组裂隙间距小于3 m,倾角30°~70°巷道围岩收敛量较大,巷道稳定性较差;3)双组裂隙控制岩体,巷道顶底板稳定性随裂隙倾角(0~70°)增大而提高;裂隙倾角70°时,巷道围岩稳定性相对来说较好;裂隙间距增加使巷道稳定性提高,裂隙间距大于巷宽时,巷道稳定性已趋于恒定,主要受围岩强度的控制;4)双组裂隙切割围岩体巷道比单组裂隙更易失稳破坏;5)巷道围岩内最易出现塑性区部位是巷道顶角、巷帮及巷道顶底板中央,双组裂隙围岩的塑性区远超过单组裂隙围岩;6)裂隙倾角在45°~70°时,塑性屈服的弱面单元数量剧增,巷道围岩体易沿弱面滑动而导致破坏失稳。
3.
On the basis of analysis of the 5 underlying roadways,which were bestrided by No 4403 isolated fully mechanized mining face with sublevel caving in Dongtan Coalmine,the influence factors and evaluation method of the over extraction roadway stability are discussed in this paper;the structure theory and control principles of the roadway's internal and external layer strata are also presented in it.
在分析东滩煤矿 430 3“孤岛”综放面跨采下部 5条软岩巷道的基础上 ,探讨了跨采巷道稳定性的影响因素及其评价方法 ,研究提出了巷道围岩内外层结构理论及其控制原则 ,为有效控制跨采巷道附加变形 ,保证工作面生产时巷道的正常使用提供了依
补充资料：稳固
①安稳坚牢：基础稳固｜阵地稳固｜政权稳固｜地位稳固。②巩固：稳固政权｜稳固地基。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条