earth surface subsidence

基本解释

The earth's surface subsidence is one of the disasters caused by coal exploitation.
地下开采所引起的地表沉陷灾害是我国高速公路建设中所面临的一个新的课题。
The earth surface subsidence rule in mining coal under special railway line at fully mechanized sub- level caving face 701 of Baojishan mine with finite element method is studied.
采用有限元法研究了宝积山煤矿701综放工作面专线铁路下采煤引起的地表沉陷规律，给出了随着开采的进行地表水平位移、竖向位移的发展规律。
During mining, the stress behaviors of workface are very obvious. Thin rock strata of roof fall by full thick, procreant cranny reach the earth's surface and have clearly sidestepped subsidence.
在回采过程中，工作面矿压显现比较明显，顶板基岩沿全厚切落，产生的裂隙通达地表并有明显的台阶下沉。