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探采结合管井已正式编入“水文地质勘察规范”。其主要优点是减少工程造价,缩短建设工期,提高经济效益,深为建设单位所欢迎。自一九七九年以来,经过华北地区二个大型水源地勘探,在探采结合成井工艺方面积累了一些经验。以勘探为主要目的,保证取得完整的水文地质资料之后,又要达到供水要求,主要靠成井工艺的完善。本文就主要的工艺过程,包括冲孔换浆、下管填料、洗井等方面谈一点粗浅的经验。一、冲孔换浆
Exploration and production combined pipe wells have been officially incorporated into the “hydrogeological survey specification.” Its main advantages are to reduce the project cost, shorten the construction period, increase economic efficiency, and are welcomed by construction units. Since 1979, exploration through two large-scale water sources in North China has accumulated some experience in exploration and production and integration into wells. With exploration as the main purpose, after ensuring the complete hydrogeological data, we must meet the requirements for water supply, mainly relying on the improvement of well completion technology. This article discusses some of the most important processes, including punching and sizing, downfilling, and well cleaning. First, punching and exchange