[1]曲 瑞,李仲先,何政伟*,等.甘肃天水大沟短时强降水诱发低频泥石流特征及成因[J].山地学报,2018,(03):488-495.[doi:10.16089/j.cnki.1008-2786.000345]
 QU Rui,LI Zhongxian,HE Zhengwei,et al.Characteristics and Causes of Low Frequency Debris Flow Induced by Heavy Rainfall in Dagou Village, Tianshui City, Gansu Province, China[J].Mountain Research,2018,(03):488-495.[doi:10.16089/j.cnki.1008-2786.000345]
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甘肃天水大沟短时强降水诱发低频泥石流特征及成因()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2018年03期
页码:
488-495
栏目:
研究简报
出版日期:
2018-05-30

文章信息/Info

Title:
Characteristics and Causes of Low Frequency Debris Flow Induced by Heavy Rainfall in Dagou Village, Tianshui City, Gansu Province, China
文章编号:
1008-2786-(2018)3-488-08
作者:
曲 瑞12 李仲先3 何政伟12*何云峰4 王舒阳4 王 勇5
1.地质灾害防治与地质环境保护国家重点实验室(成都理工大学),成都 610059; 2.成都理工大学 地球科学学院,成都 610059; 3.攀枝花学院,四川 攀枝花 617000; 4.甘肃省地质环境监测院,兰州 730050; 5.兰州大学 土木工程与力学学院,兰州 730000
Author(s):
QU Rui12 LI Zhongxian3 HE Zhengwei12 HE Yunfeng4 WANG Shuyang4 WANG Yong5
1.College of Earth Sciences, Chengdu University of Technology, Chengdu 610059,China; 2.State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu 610059, China; 3.Panzhihua University, Panzhihua, Sichuan 617000, China; 4.Geologi
关键词:
短时强降雨 低频泥石流 泥石流成因 天水市大沟
Keywords:
short-term heavy rainfall low-frequency debris flow cause of debris flow Dagou of Tianshui City
分类号:
P694
DOI:
10.16089/j.cnki.1008-2786.000345
文献标志码:
C
摘要:
甘肃天水地区为低频泥石流事件的典型多发区,区域内不仅具有特殊的气候环境特征,还为低频泥石流的孕育提供极佳的地形地貌条件。2013年7月21日,甘肃天水麦积区马跑泉镇大沟村发生大型泥石流并造成重大经济损失。此次泥石流发生过程形成了一条完整的地震-滑坡-泥石流灾害链,属于典型小流域低频泥石流。本次研究以甘肃省天水市麦积区马跑泉镇大沟村泥石流为研究对象,从地质条件、成因分析、形成过程与特征等方面分析了其独特的形成机制,采用模型计算泥石流临界径流深,反演泥石流发生的临界降雨强度,为此类缺少降雨资料的低频小流域泥石流计算提供参考方法。
Abstract:
The Tianshui area of Gansu Province has been haunted by low-frequency debris flows.The area not only has special climatic and environmental characteristics, but also provides favorable topographical conditions for the motivation of low-frequency debris flows.On July 21, 2013, a massive debris flow occurred in Dagou Village, Ma Runquan Town, Maishui District, Tianshui, Gansu Province, causing major economic losses.The occurrence of the debris flow involved with a complete disaster chain of earthquake-landslide-debris flow, and it was regarded as a typical small basin low-frequency debris flow.This study was aimed to investigate the event of Dagou debris flow and tried to find its origin.From the aspects of geological conditions, genetic analysis, formation process and characteristics, it revealed the unique formation mechanism, and a model was introduced to calculate the critical runoff depth of debris flow, and then it retrieved the critical rainfall intensity of debris flow by inversion analysis.This paper provides a reference approach to the calculation of debris flow in low-frequency with small watersheds lacking rainfall data.

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备注/Memo

备注/Memo:
收稿日期(Received date):2017-12-18; 改回日期(Accepted date): 2018-06-15
基金项目(Foundation item):地质灾害防治与地质环境保护国家重点实验室自主研究课题(SKLGP2017Z005)。[State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Independent Research Project(SKLGP2017Z005)]
作者简介(Biography):曲瑞(1991-),男,甘肃兰州人,硕士研究生,主要研究方向:第四纪地质与山地灾害。[QU Rui(1991-),male,born in Lan Zhou,Gansu province, M.Sc.candidate,research on quaternary geology,mountain hazards]E-mail:quurui@gmail.com
*通讯作者(Corresponding author):何政伟(1966-),男,博士,教授,主要研究方向:遥感地质及生态地质环境等领域研究。[HE zhengwei(1966-), male, Ph.D., professor, specialized in research on remote sensing geology and ecological geological environment] E-mail:hzw@edut.edu.cn
更新日期/Last Update: 2018-05-30