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水文地质钻探常常在第四纪地层或基岩中的断裂破碎地带等复杂地层中进行。因此,水文钻探工艺比之固体矿床勘察钻探更为复杂,特别是保持孔壁的稳定和地下水通道的疏导,更成了水文钻探工作者的艰巨任务。在地热钻探中,由于高温及有害成分对冲洗液引起的不良影响,还有不少问题需要解决,现阶段往往是把在凉水钻探中运用得较成功的冲洗液勉强照搬过来。本文试图从分析总结我队现用的冲洗液入手,谈谈对水文钻探冲洗液的一些浮浅认识。
Hydrogeological drilling is often performed in complex formations such as Quaternary strata or bedrock fracture zones. As a result, hydrologic drilling is more complicated than exploration of solid deposits, and in particular, the maintenance of wellbore stability and groundwater channeling has become a daunting task for hydrological drillers. In geothermal drilling, there are still many problems that need to be solved due to the adverse effects of high temperature and harmful components on the flushing solution. At this stage, the more successful flushing fluid used in cold water drilling is barely copied. This article attempts to start by analyzing and summarizing the rinse solution currently used by our team and discussing some superficial understandings of rinsing fluids in hydrological drilling.