水文資料是地質勘探报告中不可缺少的一部份,我队由于忙着赶生产任务,把水文鑽孔的施工推迟了一步,致使目前感到鑽孔中的水文孔比重大,必須克服重重困难,才能保证水文鑽孔的工作順利进行。在施工中,我们成功地使用“半截套管止水法”,解决了套管缺乏的困难。此外,由于事先沒有考虑到要在哪个岩层进行抽水試驗,或其他原因造成应該而沒有在止水地层換径,因而就难以达到水文地質上分层抽水的要求和在大孔径鑽孔中鑽进达不到应有的鑽进效 Hydrological data is an indispensable part of the geological prospecting report. Our team delayed the construction of hydrological drilling due to the rush to catch production. As a result, we now feel that the hydrological hole in drilling is so large that we must overcome many difficulties. In order to ensure the smooth progress of hydrological drilling. During construction, we successfully used the “half pipe water stop method” to solve the problem of lack of casing. In addition, the requirement of stratified pumping in hydrogeology is difficult to achieve due to the lack of prior consideration of the rock pumping test to be performed at which rock formation, Into less than the appropriate drilling effect