沿河路基的护坦冲刷防护试验研究

Rxperimental research on the apron protection for riverside subgrade

针对沿河路基坡脚冲刷的防护问题 ,运用水力分析和试验观测的方法 ,对护坦的防护机理、特点以及防护效果进行了分析研究 ,指出影响护坦防护效果的主要参数是护坦宽度和顶面埋置深度 ,提出了确定这两个参数的原则和方法 ,并根据试验资料提出采用护坦防护的设计计算方法。该方法概念明确 。

Aiming at scour toe of the riverside subgrade, the protection mechanism,laws and protection effects of the apron are studied from hydrokinetics analysis and experiments. Authors point out the main effect parameters are apron width and depth to protection results,advance the principle and ways to determine the effect parameters, and put forward the design method of the apron protection on the basis of the experiments data. The conception is clear,simple and practical in the method.