combined mining caving working face是什么意思 combined mining caving working face怎么读
combined mining caving working face的相关资料
combined mining caving working face的用法和样例
- In mining, if the hard roof is submitted to shear failure, the sidesteps might sink or even collapse.
摘要综放面开采过程中，坚硬顶板超前剪切破坏，会造成工作面台阶下沉，甚至工作面整体垮落。 - With the increase of the depth of coal seams mined, rock bursts will easily occur in gateways with fully-mechanized sublevel caving mining.
摘要随着煤矿开采深度增加，综放开采回采巷道易发生冲击地压危害。
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