The site try test proved that these laws are of specified help to managing excavating face roof, it simplifies process of managing excavating face roof.

经现场的工业试验证明，这些规律对工作面的顶板管理具有一定的帮助，简化了工作面的顶板管理过程。

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The results of the model tests were presented with particular emphasis on the balancing mechanism of slurry shields, the development of settlement at the excavating face and the limit slurry pressure.

试验结果表明，泥水平衡盾构开挖面导致的地表沉降很大程度上取决于开挖过程中泥舱压力的浮动范围。

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In order to enhance the efficiency of excavating coal, Beishan coalmine attempts to adopt millisecond delay direct initiation at working face.

百善煤矿为提高采煤效率，尝试在采煤工作面实行毫秒延期反向起爆。

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