Did not fall drunk down a mine shaft.

没有喝醉失足掉进矿井

Tunnel a hole, shaft, passage, etc.

挖掘洞穴、矿井、通道等。

To bore ( a shaft ) with a trepan.

钻用钻井机钻 ( 矿井 )

The workers sank a mine shaft at the foot of the mountain.

工人们在山脚挖了一个矿井。

It has directive significance to the water hazard prevention of mine shaft.

对矿井防治水工作有指导意义.