cave-in cavity陷落腔
cave-in prevention塌方防治
stope cave-in采场冒落
tectonic cave-in构造塌陷
lamb cave-inlamb凹陷
cave-in possibility塌方可能性
cave-in prediction冒顶预报
treatment of cave-in坍塌处理
mining cave-in areas矿山塌陷区
To prevent the cave-in, lateral bracing is needed when the groundwater is rich.
当洞内出水较多时,为防止拱脚岩层的软化造成拱架坍塌事故,必要时应在导坑内加设横向支撑。
参考来源 - 大跨度小净距隧道施工力学行为研究N-COUNT（可数名词） A cave-in is the sudden collapse of the roof of a cave or mine. 坍塌