1) mining of seams in conditions of"three unders-one above"
"三下一上"压煤开采
2) min-ing under buildings
"三下一上"采煤
3) "three unders" mining
"三下"采煤
1.
Yungang Mine is typical “three unders” mining district in which there is a big area together with water, railway and buildings.
云冈矿“三下”压煤面积大,且建筑物、水体、铁路连成一体,为典型的“三下”采煤。
4) sanxia caimei
三下采煤
5) mining pressed coal
压煤开采
1.
Based on the previous achievements,the effect of mining subsidence on the safety of the dam,the possibility of leakage and rapid drawdown of water level in the reservoir by mining pressed coal and the influence of mining pressed coal on the seepage field were investigated by the synthesis method combined with field-survey,indoor-test and numerical simulation.
在前人研究成果的基础上,采用现场调研、室内试验、数值计算相结合的综合方法,研究了开采沉陷对大坝安全的影响、压煤开采引发库区渗漏及库水位骤降的可能性及对库区渗流场的影响。
6) three-underground mining
三下开采
补充资料：压一
1.压倒或超过一切;第一。
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