caving ground

On Ground Pressure Control Method in Block Caving

自然崩落法地压控制方法探讨

Ennis stood as if heart-shot, face grey and deep-lined, grimacing, eyes screwed shut, fists clenched, legs caving, hit the ground on his knees.

埃尼斯的心被狠狠地击中了。他面如死灰，表情扭曲，闭上了眼睛。双拳紧握，两腿一软，重重地跪在地上。

Based on the above analysis, we draw the following conclusions: 1 、 The main deformation zone is located to the uplift in the leading edge and the tensile cracks and caving ground in the middle and rear end of the slip mass.

综合以上分析研究，得出以下几个结论：1、爬家岩滑坡主要变形区域位于滑体前缘的隆起和滑体中、后部的拉裂缝及陷落区，其变形模式为滑移&拉裂型。

This article is aimed at researching low pressure complex caving ground in Jilin area, studied mechanism of formation instability, analyzed through X-ray diffraction mineralogical analysis and SEM imagery structural analysis.

本论文针对吉林油田低压复杂易坍塌地层，对地层的失稳机理进行研究，通过X&射线衍射矿物分析，扫描电镜成像结构分析等实验对易坍塌地层进行分析。

Gob of sublevel caving will not cause ground surface downgoing.

崩落法开采形成的空区不会对地表造成沉降危害。空区不用处理，可以任其冒落；