杨家屋场桥下弃土型泥石流调查与防治设计

以重庆市巫奉高速弃土型泥石流为研究对象，通过详细野外调查，阐述弃土型泥石流灾害的发育和成灾过程，系统研究泥石流运动特征和动力参数。结果表明:杨家屋场桥下弃土型泥石流主要致灾因素为陡峻的地形、大量的弃土和持续降雨。针对上述特点，采用固源、清方、排导和拦挡的综合防治设计，以减少对自然环境和工程设施的危害。

Field Investigation on Spoil Triggered Debris Flow under Yangs Village Bridge and the Engineering Prevention Design

Taking the spoil triggered debris flow along Wushan—Fengjie highway in Chongqing as the study object, the development and outbreak processes of the disaster of the spoil triggered debris flav were described after filed investigation, and then the motion characteristics and the dynamic parameters there of were studied systematically. The result shows that the main factors incurring the spoil triggered debris flow under Yangs Village Bridge include steep terrain, a large number of spoil and continuous rainfall. Therefore the comprehensive prevention measures, including source solidification, earth clear-up, drainage and blocking, are designed accordingly so as to reduce the damages to natural environment and engineering facilities.