1) top failure
落顶
2) roof caving
顶板垮落
1.
Using this model,we have simulated the roof caving characteristic and the stress distribution of surrounding rocks and analyzed the deformation feature of the surrounding rocks in the working face end.
02D数值模拟软件建立相应的分析模型,模拟了煤层开采过程中的顶板垮落和围岩应力分布特征,重点分析了工作面上下端头的围岩应力分布规律及变形特点;结合具体生产矿井的综采工作面现场情况,得出了综采工作面推进过程中的周期来压、采动影响范围和煤壁片帮等矿压显现特征,并针对开采中出现的问题提出了相应的安全防范措施。
3) roof control by caving
垮落控顶
4) top-coal control
顶煤冒落
5) roof dilapidation
顶板崩落
1.
Similar simulated experiment for continuous mining and roof dilapidation of ore body underground;
矿体地下连续开采顶板崩落相似模拟试验
6) Climax community
顶级群落
1.
During the change of different fermentation types,the climax community was formed by all the ecological factors and a single factor could not make a population dominant even it is the optimal niche.
在生物制氢反应器中,研究了启动初期的容积负荷、pH和ORP对顶级群落形成的影响。
补充资料：了落
1.了结;收场。
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