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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A new CGM fast-aid repair material was developed by changing the kind of cement and adding hardening accelerator based on the CGM High Strength Non-Shrinkage Grouting material.