按水文钻孔的施工要求,为保证抽水资料正确可靠,在钻进过程中必须用清水洗井或用泥浆洗井后再用清水彻底清洗井壁泥皮,以恢复含水层正常给水。但我队施工地区地层大多松散破碎,其中尤以第三系、第四系地层为甚,而抽水次数最多者也在这类地层。据我队施工情况来看,在这类地层中钻进, According to the construction requirements of hydrological drilling, in order to ensure the pumping data is correct and reliable, the drilling mud must be washed with water or washed with mud and then cleaned thoroughly with clean water to restore the normal water supply to the aquifer. However, most of the stratums in the construction area of ​​our team were loose and fragmented, especially in the Tertiary and Quaternary strata. The most frequent pumping was also in such strata. According to my team construction situation, drilling in such strata,