乌东德水电站猪拱地沟泥石流特性与防治对策

发布时间：2018-04-05 21:27

本文选题：乌东德水电站　切入点：猪拱地沟　出处：《长江科学院院报》2017年02期

【摘要】：乌东德水电站坝址区受多条泥石流沟的威胁,为避免泥石流灾害带来巨大损失,制定有效的防治对策对工程建设具有重要意义。基于野外调查和室内模型试验,对猪拱地沟泥石流静动力特性进行了分析,结合特殊的地形、地质条件以及工程布置,制定了防治对策。此外,还对猪拱地沟的泥石流防治效果进行了跟踪评价。结果表明:拦挡坝能够有效阻止大颗粒固体物质参与泥石流活动,可减轻上游沟道的冲刷程度;停淤场使部分小颗粒固体物质停留,最终只有少量的固体物质和洪水通过排导槽下泄;"V"形排导槽具有立体束流特点,排导效果显著;排导槽出口位于坚硬的基岩,抗冲刷能力较强,有利于排导槽的稳定。"拦挡、停淤、排导"防治体系效果良好,对今后泥石流防治对策具有借鉴意义。
[Abstract]:Wudongde Hydropower Station Dam by debris flow in order to avoid the threat of debris flow disasters caused huge losses, to develop effective countermeasures has important significance for engineering construction. Based on field investigation and indoor model test, analyzed the static and dynamic characteristics of debris flow waste pig arch, combined with the special topography, geological conditions and project layout and formulated the countermeasures. In addition, the pigs were waste debris flow control effect evaluation. The results show that the dam can effectively prevent large particles of solid matter in debris flow, erosion degree can reduce the upstream channel; silting field that part of the small particles of solid matter stay, finally only a small amount of solid material and through the flood drainage trough transportation; "V" shaped drainage groove with three-dimensional beam characteristics, drainage effect; drainage groove outlet located on bedrock, anti erosion ability is Strong, is conducive to the stability of the drainage trough. "LanDang, silting, drainage control system with good effect, can be used as reference for debris flow prevention and control measures.

【作者单位】：长江勘测规划设计研究院;昆明市东川区泥石流防治研究所;
【基金】：水利部“948”项目(201510)
【分类号】：TV223;P642.23

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