通过对埋设于570中段光弹性应力计的观测，分析了该中段矿柱破坏的情况及原因。

The cause of mine pillar destruction in in Dachang Tongkeng Tin Mine was analyzed from observation by photoelastic stressmeter embedded in mine stope 570.

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通过对埋设于570中段光弹性应力计的观测，分析了该中段矿柱破坏的情况及原因。

The cause of mine pillar destruction in in Dachang Tongkeng Tin Mine was analyzed from observation by photoelastic stressmeter embedded in mine stope 570.

youdao