由于垻肩鑽孔的大部分试段在地下水位以上,即处于干孔情况下,而鑽进中采用冲洗液及压水试验后,使干岩层吸水并达到暂时饱和状态,孔内出现了残留水,在一定时期内流回孔内的残留水与向岩层渗漏的水达到平衡时,就形成丁稳定的假地下水位,这种假水他在透水性弱的岩层里,可延续达数是夜之 Since most of the drill holes in Shizhoushi are above the groundwater level, ie, in the case of dry holes, and the flushing fluid and water pressure test are carried out during drilling, the dry rock straws absorb water and reach a temporary saturation state, leaving a residue in the holes Water, in a certain period of time back to the hole residual water and seepage to the formation of water to reach equilibrium, the formation of Ding stable fake groundwater level, the fake water in the permeability of weak formations, the continuation of the number of It is night