1) underlie coal seams
下覆煤层组
1.
Control technique of surrounding rock stability for main entry with underlie coal seams mined
下覆煤层组开采大巷围岩稳定性控制技术
2) shallowly buried coal seam under soil strata
土层覆盖下浅埋煤层
3) lower coal group aquifer
下组煤充水含水层
4) underlie coal seam
下伏煤层
1.
To solve the difficulties of mining the coal seams underlie the-115 main entry without destroying the main entry in the Quangou coal mine,the simulation analysis of surrounding rock movement regularities of the main roadway with the underlie coal seams mined was carried out.
针对泉沟煤矿要采出-115大巷下压煤,同时要保证上部的大巷正常使用的技术难点,进行了下伏煤层开采大巷围岩活动规律的模拟分析。
5) underlying coal bed
下卧煤层
1.
Study on structural stability of deep buried highway tunnel with underlying coal bed exploiting;
采动下卧煤层对深埋隧道结构稳定性的影响
6) underground coal seam
地下煤层
1.
This paper introduces the working principles of high density resistivity method and the field work method,probes into some problems that should pay attention to in detecting the multi-layer goaf by using the high density resistivity method,and expounds the concrete steps of detecting the multi-layer goaf of underground coal seam.
介绍了高密度电阻率法的工作原理及野外工作方法,探讨了应用高密度电阻率方法探测多层采空区时应注意的问题,阐述了探测地下煤层多层采空区的具体步骤。
补充资料：土层
1.土地的表层。
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