水库地区路基的防护研究

当水库蓄水及运行过程中产生的库岸再造危及库区公路安全时,应对库岸或路基进行防护加固。在研究三峡、水口等水库塌岸历史、现状及预测的基础上,分析了岩质、土质和岩土混合岸坡的破坏方式、库岸再造类型,认为路基或库岸防护设计应遵循滑坡与塌岸综合治理、库岸防治与开发利用相结合、分时期分段落分水位区防护等原则。详细阐述了在不同库岸地质结构及库岸再造类型中采用的防护措施,研究了砌石坡式防护、防护林带、格构锚固、挡土墙、抗滑桩、喷锚等工程防护结构类型。

Research on Protection Measures of Roadbed in Reservoir Area

When reservoir bank rebuilding due to water storing and running process endangers the security of the road in the area,some measures should be taken to defend and maintain the roadbed or bank.Analyses are made of the failure models and the types of reservoir bank rebuilding of rock bank slope, soil bank slope and composite bank slope of soil and rock based on the research on Three Gorges Reservoir and Shui Kou Reservoir.The result showed that the design of roadbed or reservoir bank should keep to the following principles: integrate treatment of the bank caving and landslide,combination of bank slopes maintenance with development,in stages and sections.This paper expatiated various measures for various geological structures of bank slopes and the types of reservoir bank rebuilding and investigated some types of maintenance structures such as: rip-rap with cuboid stone,shelter belt,grid anchorage technique,retain walls,driven piles,tieback and shotcrete,and discussed its applicability,validity and economy.