释义 |
mechanized top-coal caving mining 基本例句 综放 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。 |