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大漂石、卵砾石层施工供水井作业难度大、成井困难、事故多,要求保护孔壁稳定、圆滑,下管前刮划孔壁利于圆孔,填砾后大风量空压机对口吹水洗井法等重要技术环节进行了探讨和分析。
Large boulders, gravel layer construction of water supply wells difficult operation, well into the well, accidents and more required to protect the hole wall is stable, smooth, under the pipe before scraping the hole wall is conducive to round hole, Wells and other important technical aspects were discussed and analyzed.