山区沿河路基河湾凹岸的护坦防护

针对山区沿河路基河湾凹岸的护坦防护机理及防护效果进行了研究,指出护坦顶面应低于河床面,其减冲防护效果与护坦宽度BH有关,提出凹岸护坦防护的设计原则和设计计算方法。通过工程实际应用,证明河湾凹岸路基冲刷防护采用护坦基脚式挡土墙或护坦式基脚护坡是一种经济有效、易行的浅基防护型式。

Apron Protection for Concave Bank Along River Subgrade of Mountain Area

To counter apron protection for concave bank along river subgrade of mountain area,the prtection mechanism and protection effects of the apron are studied from hydraulic analysis,that the top of apron should be lower than bed and the protection effect is relate to apron width B__H are presented,the design principle and the calculation method of apron protection are put forward.The design methods of the apron protection for concave bank along subgrade river are effective measures pass through practical application.