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目前在抽水试验工作中,除了大口径孔群抽水以外,经常使用的抽水工具是空气压缩机,多采用移动式的、风压7～8公斤/厘米~2、风量6～17米~3/分的不同型号。由于设备条件的限制,对深水位钻孔进行抽水试验有很多困难。如果地下水水量很小,尽管水位很深,抽水工作也还是可行的;但是,如果水位很深、水量又较大,则抽水试验不易奏效,甚至以得不出合格资料而告终,经常成为“禁区”。因此,如何立足现有设备的
At present, in the pumping test work, in addition to the pumping of large diameter borehole groups, the commonly used pumping tools are air compressors, which are mostly mobile, with a wind pressure of 7 to 8 kg/cm~2, and air flow of 6 to 17 meters~3/. Different models of points. Due to the limited conditions of the equipment, there are many difficulties in the pumping test for deep water drilling. If the groundwater volume is very small, the pumping work is still feasible despite the deep water level; however, if the water level is deep and the water volume is large, the pumping test is not easy to work and even ends up with no qualified data, often becoming a restricted area". Therefore, how to base on existing equipment