With the geometrical size and temperature exchange value of the mine shaft, the possibility of the cracking on the mine freezing shaft would be increased with the depth of the overburden.

在井筒的几何尺寸及温度变化值确定的情况下，冻结立井随着表土段深度的增加，破裂的可能性在随之增大。

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The depth indictor is an essential instruction instrument in the mine lift system, and its function is to show real-time position of mine skip and the state of shaft switches.

深度指示仪是矿井提升行业中的必备指示设备，其功能是实时显示箕斗的位置和井筒开关的状态。

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According to Golborne, the first stage of drilling on Plan B has reached a depth of 1, 640 feet (500 meters) and will pierce the ceiling of the mine shaft where the men are trapped this weekend.

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