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well washing
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理学
水井钻进作业
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well washing
洗井
水井打成之后,需替换和清洗井内的泥浆、沉淀物,以及井壁泥皮和含水层孔隙内的堵塞物等,使砾料和靠近砾料含水层中的颗粒重新按其大小自然排列,以形成良好的人工过滤层,水流畅通并达到水清、砂净的作业。
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