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通过野外调查和室内模型试验对白滩沟的泥石流特性进行了分析,结合特殊的地形、地质条件以及建筑物的布置情况,对泥石流的排导线路进行了比选,确立了最优的排导线路,此外,还对白滩沟的泥石流防治效果进行了跟踪评价。结果表明:导流墙、拦挡坝、固床坝能够有效保护原始沟道,阻止大量的固体物质参与泥石流活动,再加上停淤场的停淤作用,最终只有少量的固体物质和洪水通过排导槽排至金沙江,达到了预期的防治效果。“稳坡、拦挡、固床、停淤、排导”的综合防治体系效果良好,在今后的泥石流防治工程设计中值得推广采用。
Through the field investigation and indoor model test, the debris flow characteristics of Bai Tan Gou were analyzed. According to the special topography, geological conditions and the layout of buildings, the drainage routes of debris flow were compared and the optimal drainage route was established In addition, the effect of debris flow prevention and control of Bai Tan Gou was also evaluated. The results show that the diversion wall, barrage dam and solid bed dam can effectively protect the original channel, prevent a large amount of solid matter from participating in the debris flow activity. Combined with the silting-stop effect of the silting-out yard, only a small amount of solid matter and flood finally pass through the row Guided discharge to the Jinsha River, has reached the expected effect of prevention and treatment. The comprehensive prevention and cure system of “stable slope, block, solid bed, stop silting and drainage” has a good effect and is worth popularizing in the design of debris flow prevention and control engineering in the future.