速流结构泥石流抛程理论分析与试验  

Theoretical Calculation Range of Debris Flow and Testing of Debris Flow Range in Speed-drainage Structure

作　　者：唐红梅[1] 陈洪凯[1] 

机构地区：[1]重庆交通大学岩土工程研究所,重庆400074

出　　处：《重庆大学学报（自然科学版）》2007年第8期123-127,共5页Journal of Chongqing University

基　　金：交通部跨世纪人才专项基金(95050508);西部交通建设项目(200332822047)

摘　　要：运用运动学方法建立了速流槽出口处泥石流体的抛程理论计算方法,通过速流结构模型试验验证了抛程计算公式,并获得了速流槽反倾段倾角在8°左右时抛程最大,泥石流理论计算抛程值偏小的重要结论。通过平川沟泥石流速流结构的现场调查证实了泥石流抛程计算方法的正确性。As one of control structures of drain debris flow quickly and effectively, speed-drainage structure is composed of converging trough and speed-drainage trough. It does well in controlling of debris flow and assuring safety of constructions along roads . A dynamical method has been used to set up calculation of the range of debris flow and the predicted results are reasonably verified by model test. Calculated results show nonlinear relationship of the range of debris flow and obliquity of speed-drainage structure . 8°is proposed the most effective angle and theoretical range is a little less than it of testing . The results of Ping-Chuan engineering application practices indicate that the methods are reliable, convenient and practical for designs of speed-drainage structure.

关 键 词：速流结构 泥石流 理论抛程 试验抛程 对比 

分 类 号：P932[天文地球—自然地理学] P546