| 崩塌堆积体启动坡面泥石流判别与防治 ——以北川县开坪乡平石板泥石流为例 |
| 投稿时间：2018-07-16 修订日期：2018-07-16 点此下载全文 |
| 引用本文：佘涛,李金洋,陈欢,等.崩塌堆积体启动坡面泥石流判别与防治 ——以北川县开坪乡平石板泥石流为例[J].钻探工程,2018,45(8):88-92.SHE Tao,LI Jin-yang,CHEN Huan,et al. Discrimination and Prevention of Slope Debris Flow Caused by Collapse Accumulation: A Case Study on Pingshiban Debris Flow in Beichuan[J]. Drilling Engineering, 2018,45(8):88-92. |
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| 基金项目:中国地质调查局地质调查项目“涪江流域1∶5万环境地质调查”（编号：DD20160251） |
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| 中文摘要:强震区地震后大量的崩塌堆积体堆积于高陡斜坡中上部，堆积体远离居民点，一旦诱发为坡面泥石流，形成新的次生地质灾害，将严重威胁下方居民的生命财产安全。本文以北川县开坪乡平石板坡面泥石流为例，平石板沟“5.12”地震崩塌堆积体在2010、2013年强降雨作用下失稳转变为坡面泥石流淤积场镇。在平石板泥石流暴发特征介绍基础上，通过粒径不均匀系数、堆积体启动判别指标、后缘汇水面积等来分析崩塌堆积体启动条件及影响因素，并针对此类灾害发育特征，提出了通过上游稳拦固源方法进行治理的防治思路。以期为研究高陡斜坡堆积体的启动机制及防治提供一定的借鉴意义。 |
| 中文关键词:崩塌堆积体；坡面泥石流；不均匀系数；判别指标 防治 |
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| Discrimination and Prevention of Slope Debris Flow Caused by Collapse Accumulation: A Case Study on Pingshiban Debris Flow in Beichuan |
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| Abstract:, A large number of collapse accumulation accumulate on the upper part of the high and steep slopes after the earthquake in the strong earthquake area. The accumulations are far away from the residential area. Once they are induced into the debris flow, a new secondary geological disaster will be formed, which will seriously threaten the lives and property of the residents below. Taking the debris flow of the Pingshiban slope in Kaiping Township of Beichuan County as an example, the collapsed accumulation body of Pingshanbangou “5.12 earthquake” under the influence of strong rainfall turned into a slope debris flow Shijuchangzhen in 2010 and 2013. Based on the introduction of outbreak characteristics of flat stone debris flow, this paper analyzes the starting conditions and influencing factors of collapse accumulation body by the unevenness coefficient of particle size, the discriminating index of starting body for accumulation, and the catchment area of the trailing edge, etc.In response to the development characteristics of such disasters, a prevention and control approach for prevention through upstream stabilization and solid source methods is proposed. In order to provide a reference for the study of starter and control of high and steep slope deposits.#$NLKeywords: collapse accumulation; slope debris flow; unevenness coefficient; discriminant index; prevention |
| keywords:collapsed accumulation slope debris flow non-uniform coefficient discrimination index prevention and control |
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