Discussed rock mass gravity collapse mechanism caused by under ground and overburden failure and surface settlement disaster, offered some underground mining and surface protective measures.

论述了地下矿层开采引起的岩体重力变形机理和造成的覆岩破坏、地表沉陷等灾害，提出了井下开采和井上防护的技术措施。

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Discussed rock mass gravity collapse mechanism caused by under ground and overburden failure and surface settlement disaster, offered some underground mining and surface protective measures.

论述了地下矿层开采引起的岩体重力变形机理和造成的覆岩破坏、地表沉陷等灾害，提出了井下开采和井上防护的技术措施。

youdao