黏土覆盖 meaning in Chinese
clay blanket
Examples
- Based on the in - situ observation of the firstly mined working face of nanliang coal mine , the roof movement , the roof weighting intensity , and entry deformation and failure of the working face were analyzed
摘要通过南梁煤矿首采工作面采前的实验研究和开采时的现场观测，分析了工作面顶板的移动、来压强度以及巷道变形破坏情况，总结了厚黏土覆盖层浅埋煤层单体长壁工作面的矿压显现规律。