长江荆江河段河势控制工程建设实践与思考

Construction practice of river regime controlling projects of Jingjiang River and some thoughts

为应对三峡水库蓄水后清水下泄对下游河段特别是荆江河段造成的不利影响,于2007~2011年,在荆江河段先后实施了两个河势控制应急工程项目。两个项目除采用干砌石护坡、水下抛石护坡等传统护岸技术外,还采用了土工格栅护坡、钢丝网石垫护坡、软体排护脚、混凝土铰链排等护岸工程新技术。通过工程的实施,确定了护岸脚槽的合理顶高程,检验了护岸工程新技术在荆江河段治理中的适用性。详细介绍了传统与新技术在护岸工程中的实施情况,可供同类工程参考。

To cope with the adverse impact of clean water release on lower river channels especially Jingjiang River after impoundment of Three Gorges Reservoir,two river regime controlling emergency projects have been implemented at Jingjiang reach during 2007 to 2011 successively. The new technology of geogrid slope protection,steel wire mesh and enrockment slope protection,flexible mattress and concrete hinge,etc. was adopted besides the traditional bank revetment method of dry stone and underwater riprap. Through the implement of the two projects,the reasonable top elevation of the trough at revetment foundation is determined and the adaptability of the new technology in regulation of Jingjiang reach is verified. The implement of the traditional and new technology is introduced.