Collapse of mined-out area is an environmental geological hazard of the coal mining area.
采空区塌陷属于煤矿区的环境地质灾害问题。
Under hazard load, the important function of engineering structure of small town is lost, the structure is destroyed seriously, even collapse, which causes enormous life and property loss.
在灾害荷载作用下，如果小城镇工程结构的重要功能丧失，结构出现严重破坏甚至倒塌，易造成巨大的生命财产损失。
Karst collapse is the most prominent geological hazard in covered karst area.
岩溶塌陷是覆盖型岩溶区最突出的地质灾害问题。
It is proved effectual for preventing rock collapse and safety hazard accident by practical case study.
实际情况表明，本措施对预防岩石塌落和安全有害事故是有效的。
It is proved effectual for preventing rock collapse and safety hazard accident by practical case study.
实际情况表明，本措施对预防岩石塌落和安全有害事故是有效的。
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