引江济汉工程设计特点及关键技术

Design features and key technologies of Project of Water Diversion from Yangtze River to Hanjiang River

总结了引江济汉工程的主要设计特点和关键技术,介绍了三峡水库、泥沙及钉螺、高地下水等问题对工程的影响及处理措施;阐述了引江济汉渠道进出口段的设计要点、渠道的引水方式及超大型的平板防洪闸等;介绍了渠道与拾桥河交叉时采用的平立交结合的独特布置及拾桥河枢纽功能的特点以及拾桥河左岸节制闸超大型平面弧形闸门技术;分析了膨胀土改性两种工法的优缺点,并结合引江济汉工程现场试验,提出了改性土"路拌法"质量控制的关键因素。

The main design features and key technologies for Project of Water Diversion from Yangtze River to Hanjiang River are summarized herein,and then the impacts from Three Gorges Project,sediment deposition,oncomelania,high groundwater level,etc and their teatment measures are described,while the design features of the inlet / outlet section of the channel for water diversion from Yangtze River to Hanjiang River,the water diversion mode,super-large flood control plane gate,etc. are expatiated. Moreover,the unique layout of grade / overpass crossing combination adopted for the crossing between the channel and Shiqiaohe River as well as the technique of the super-large plane gate for the sluice gate on the left bank of Shiqiaohe River are introduce. Finally,the defects and merits of two methods for the modification of expansive soil are analyzed,and thus the key factors for the quality control of the road mixing method for the modified soil are proposed in combination with the in situ experiment for the Project of Water Diversion from Yangtze River to Hanjiang River.