| 利子依达沟泥石流演化历史及发展趋势预测 |
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| 引用本文： | 蔡佳君,沈军辉,唐垒庆.利子依达沟泥石流演化历史及发展趋势预测[J].水土保持通报,2012,32(3):217-221. |
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| 作者姓名： | 蔡佳君 沈军辉 唐垒庆 |
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| 作者单位： | 成都理工大学地质灾害防治与地质环境保护国家重点实验室,四川成都,610059 |
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| 基金项目： | 高等学校博士学科点专项科研基金(博导类)资助课题“汶川地震区典型坡面型泥石流形成机制研究”(20115122110012) |
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| 摘 要： | 大渡河右岸一级支流利子依达沟是一条多期次,中高频率的泥石流沟。根据该沟泥石流的灾害历史和发育特征,对整个沟域进行了详细的地质工程调查,典型剖面保留泥痕的地质工程测绘,现场的颗分实验及容重实验,分析了利子依达沟泥石流的形成条件和泥石流的演化历史。结合大渡河阶地发育特征和冰川消融期次,分析了利子依达沟各期老泥石流的发育时期,并对该沟泥石流进行了预测。通过研究发现,利子依达沟古泥石流的形成和冰川的演化有着密切的联系,通过历史分析法可以预测其发展趋势。利子依达沟是一条衰亡期泥石流沟,其泥石流暴发规模会逐次减小。
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| 关 键 词： | 泥石流 利子依达沟 演化历史 预测 |
| 收稿时间： | 2011/11/7 0:00:00 |
| 修稿时间： | 2011/12/5 0:00:00 |
Development History of Debris Flows and Its Prediction in Toshiko Gully |
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| CAI Jia-jun,SHEN Jun-hui and TANG Lei-qing.Development History of Debris Flows and Its Prediction in Toshiko Gully[J].Bulletin of Soil and Water Conservation,2012,32(3):217-221. |
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| Authors: | CAI Jia-jun SHEN Jun-hui and TANG Lei-qing |
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| Institution: | (State Key Laboratory of Geohazards Prevention and Geoenvironmental Protection, Chengdu University of Technology,Chengdu,Sichuan 610059,China) |
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| Abstract: | Toshiko gully on the right bank of Dadu River is characterized by medium and high frequency debris flows,where several severe debris flow disasters occurred.Based on the history of disasters and development characteristics of the gully,formation conditions and development history of debris flow in the gully are analyzed through detailed field geological engineering investigation,geological mapping for remained mud marks in typical profiles,particle analysis and volume weight test.Combined with the development characteristics of the Dadu River terraces and glacial melting periods,phases of debris flow in the periods are analyzed and the prediction and assessment of debris flow are made.The research reveals that the formation of debris flow has a close relation with ice evolution.Using the historical analysis method,the conclusion can be draw that Toshiko valley is in a decline phase and the scale of debris flow will be reduced successively. |
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| Keywords: | debris flow Toshiko gully development history prediction |
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