四川省冕宁县崩土凹泥石流成因及防治研究
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国家自然科学基金项目"若尔盖地区碳硅泥岩型铀矿床垂直分带规律研究"(41072064);四川省教育厅重点项目"凉山州德昌县前山滑坡研究"(11ZA143)


Causes and Control of Bengtuao Debris Flow in Mianning County of Sichuan Province
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    摘要:

    西南地区由于所处的大地构造位置及其独有的地形地貌特征,泥石流成为其最常见的地质灾害之一。崩土凹泥石流位于川滇菱形地块,安宁河东支断裂附近,具有较强活动性。从地形地貌、地层岩性、新构造活动等内因和暴雨触发外因等方面,分析了其易发程度、活动类型、危害方式,进而定量确定泥石流活动的各项特征指标。针对崩土凹泥石流地质灾害提出明确的防治目标和工程治理方案。该区域的泥石流灾害大多具有相同或相似的地质背景,特别是昔格达组黏土岩沿安宁河流域广泛分布,往往是泥石流灾害的主要物源成分,并且成为泥石流致灾的控制性因素和主要治理对象。

    Abstract:

    Debris flow is one of the most common geologic disasters in the southwest area of China, due to its tectonic structure position and unique topographic characteristics. Bengtuao debris flow, with strong mobility, is located in the diamond land block of Sichuan and Yunnan Provinces where is near the east fracture branch of the Anning River. Based on internal causes like topography, stratum lithological characters and neo-tectonic activity and external causes like rainstorm, characteristic indexes of the debris flow are obtained quantitatively in accordance with analyses of occurrence degree, activity patterns and hazarding ways, so that the definite controlling targets and project management program are put forward in detail. Most of debris flow disasters in this area occur on the same or similar geological background, especially the widely distributed Xigeda formation clay in the Anning River Basin, which are the main material source composition of debris flow and the governing factor and controlling object.

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郭宁.四川省冕宁县崩土凹泥石流成因及防治研究[J].水土保持通报,2014,(1):199-202

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  • 收稿日期:2013-05-04
  • 最后修改日期:2013-05-10
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  • 在线发布日期: 2016-03-29
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