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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Text also explain climatically the reason why only these are lots of thatching in Yunnan zone based on the aquiferous capability of the couch grass and stability of stake.
The utility model relates to a post shaped aquiferous porous foamed pot clay which has high performances of water suction and water dilution and high compression strength.