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抽水试验中,止水工作质量的好坏是关系着抽水试验成败的主要关键.作者在工作中摸索了点滴经验,特将粘土止水与海带止水的方法介绍如下,仅供参考.一、粘土(黄泥球)止水的方法此法适于钻探工作完毕后于多层含水层采用回填法抽水时用.尤其是当换径处稍破碎,钻孔在此处之直径不规则,采用此法,比一般用木塞子堵换径处钻孔的方法可靠,操作简单.且在抽水试验时间较长时,也很适用.(一)黄泥球的质量及制作
Water pumping test, the quality of water stopwatch is related to the success or failure of the main key pumping test. The author worked in the drip experience, especially the method of sealing water and seaweed clay as follows, for reference purposes only. Clay (Wong Niu ball) method of stopping water This method is suitable for drilling after the completion of the multi-aquifer backfill method used when pumping water, especially when the diameter of a little broken at the drilling where the diameter of the irregular, using This method, than the general use of wood plug diameter hole diameter method of reliable, easy to operate and pumping test time is longer, it is also very applicable.