... 穿透的自流井 掘抜井戸 penetrating artesian well 灌浆掘井法 grouting shaft sinking 钻井法掘井 boring shaft sinking ...
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The shaft sinking with the aid of grouting in Jingzhou Asbestos Mine indicates that sinking is possible in aquiferous karst area.
金州石棉矿竖井的顺利下掘，说明在溶洞发育岩层中用注浆法凿井是可行的。
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