1) difficult seam mining
难采煤层开采
2) difficult mining seam
难采煤层
1.
Longwall and longhole blasting coal mining method for difficult mining seam;
难采煤层巷道长壁长孔爆破采煤方法简介
3) mining
[英]['maɪnɪŋ] [美]['maɪnɪŋ]
煤层开采
1.
The response character of acoustic wave velocity field of coal floor rock mass failure is discussed according to the general principle of floor failure by mining.
从煤层开采引起底板破坏一般规律出发， 探讨了底板岩体破坏与声波速度场的响应关系， 介绍了声波ＣＴ探测的原理与方法， 按采矿活动的关键阶段设计观测方案， 进行了试采面底板破坏深度的动态声波ＣＴ 探测试验。
4) Coal mining
煤层开采
1.
Effect research for leakage of surface water body in the Yuecheng Reservoir area due to coal mining;
煤层开采对岳城水库库区渗漏的影响研究
2.
Stress path analysing of soil during coal mining;
煤层开采土体应力路径分析
3.
If the coal mining of Huangling No.
依据地质勘探资料,运用水文地质学相关理论,在分析井田水文地质特征及直罗组上段隔水性能的基础上,通过导水裂隙带最大高度计算,得出了煤层开采对水源地无影响的结论,并提出了矿井建设期间应注意的事宜。
5) seam mining
煤层开采
1.
In the process of Shanxi formation seam mining in Shaqu Colliery,the seam roof and floor sandrock aquifers constitute the direct discharge aquifers.
沙曲煤矿山西组煤层开采过程中,煤层顶底板砂岩含水层构成煤层开采时的直接充水含水层。
6) working seam
开采煤层
补充资料：井工开采(见地下采煤)
井工开采(见地下采煤)
underground mining:see underground mining
井工开采采煤。underground mining见地下
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