沉井式取水头部及原水管穿堤的结构设计与应用  

Structural Design and Application of Caisson Water Intake Head and Raw Water Pipe Crossing Embankment

作　　者：石清林 郎庆善 SHI Qing-lin;LANG Qing-shan(Zhejiang Urban and Rural Planning Design Institute,Hangzhou 310030,China)

机构地区：[1]浙江省城乡规划设计研究院,浙江杭州310030

出　　处：《中国给水排水》2018年第18期73-77,共5页China Water & Wastewater

摘　　要：结合地形地貌、地质及工程特点,设计选用钢筋混凝土沉井式结构作为杭州苕溪某水厂的取水头部,对钢筋混凝土沉井的抗浮、抗倾覆、抗滑移及主体结构强度、裂缝进行了验算与分析。采用钻孔灌注桩对堤坝进行加固,并对其整体抗滑稳定进行了验算。对原水管穿堤方式进行分析与比较之后,确定选用顶管方式穿越堤坝,同时采用高喷防渗墙与注浆止水环封闭相结合的方式对堤坝防渗进行有效处理。该取水头部实际运行安全稳定,经受住了几次极端反常天气造成东苕溪超高水位的巨大考验。Based on the features of topography, geology and engineering characteristics, the reinforced concrete sinking-well structure is selected as the water intake head of a water plant in Tiaoxi River in Hangzhou. The anti floating, anti overturning, anti slip, strength and crack of the main structure of the reinforced concrete sinking-well are checked and analyzed. The cast-in-place piles are used to reinforce the dams, and the overall stability against sliding is checked. After comparison of the measures that the water pipe crosses the embankment, the pipe jacking way is selected, and the seepage prevention of the dam is effectively treated by the combination of the high spray anti seepage wall and the sealing of the grouting ring. The water intake head has been operated safely and stably, and has standed the test of several extreme abnormal weather conditions which caused the East Tiaoxi River high water level.

关 键 词：取水头部 沉井 顶管 堤坝 防渗处理 

分 类 号：TU991[建筑科学—市政工程]