南丰县自来水公司大口径完整井壁辐射井勘察设计及施工工艺

Investigation,Design and Construction of Complete Radiation Well of Nanfeng Water Supply Company

南丰县自来水公司大口径完整辐射井井筒内径10m,辐射管外径219mm,辐射管总长240m,单根长20m,单井出水量28000m3/d。由于其设计、施工中,引入水下注浆技术,较普通大口井有其独特性。本文阐述了辐射井的勘察、设计及施工工艺要点,在大江、小河的中上游丘陵区有一定的普遍适用性,是解决城镇及小城市供水的新型卫生的取水井,将为乡村城市化发展作出贡献。

The Inner Diameter of the complete radiation well in Nanfeng Water Supply Company is lOm, the outer diameter of its radiation tube is 219mm. The total length of radiation tube is 240m and each tube＇ s length is 20m. The flow velocity of each well is 28000 ton/day. This type of big-diameter radiation well has its own characteristics compared with other ordinary big-diameter well, as under-water grouting technology during the design and construction is used. This paper mainlydiscusses the key points of prospecting, design and construction technology, which can be popularly used for hilly land of the middle to upper areas of big orsmall rivers. This kind of well is also a new hygienic well of supplying water for cities and counties, which would contribute to the development of city and countryside.