Characteristic analysis and control measures for debris flow in Baitan Gully of Wudongde Hydropower Station
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摘要: 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。Abstract: Adopting field investigation and indoor model tests, the characteristics of debris flow in Baitan Gully are studied. Combined with the particularity of terrain, geological conditions and building layout, the drainage route of debris flow is compared. The optimal drainage route is obtained. In addition, the effect of control measures of debris flow in Baitan Gully is evaluated. The results show that the guide wall, block dam and solid bed dam can effectively protect the original channel, and they can also prevent solid substances from being involved in debris flow activity. Beyond that, the silting field can also play the role of silting. Finally, only a small amount of solid substances and the flood are discharged to the Jinsha River through the drainage cannal, and the effect of prevention is achieved. As a complete system, the guide wall, block dam, silting field and solid bed dam can have a good control effect. So such a control system should be widely adopted in the design of control measures for debris flow.
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Keywords:
- debris flow /
- Wudongde Hydropower Station /
- characteristic analysis /
- measure
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