With the deepening of mining, the hidden dangers in the safety of mined area is gradually exposed.
随着采矿的深入，空区安全隐患逐渐暴露。
In the residual coal mining, the retaining and non-mining pillars in the mined area in the past are for resumption of mining.
残煤开采是将过去已开采区留下的煤柱、不可采的煤柱，再进行复采。
The stress relief method of hole diameter deformation was used to measure the stress distribution of the pillar structure in the mined area in a big phosphate mine.
采用孔径变形应力解除法，测量了某大型磷矿采空区中矿柱结构的应力分布规律；
The sinking and deformation occurred in coal mined area do seriously effect the stability and safety on high power tower.
煤矿采空区的塌陷与变形对高压供电线塔基的稳定构成了极大的威胁。
The sinking and deformation occurred in coal mined area do seriously effect the stability and safety on high power tower.
煤矿采空区的塌陷与变形对高压供电线塔基的稳定构成了极大的威胁。
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