[1]刘兴荣,周自强*,董耀刚,等.泥石流拦挡坝破损分析及优化对策——以陇南市武都区为例[J].山地学报,2020,(3):473-482.[doi:10.16089/j.cnki.1008-2786.000485]
　LIU Xingrong,ZHOU Ziqiang,DONG Yaogang,et al.Investigation of the Failure Patterns of Debris flow Retaining Dams and Optimized Engineering Countermeasures—A Case Study at Wudu District of Longnan City, Gansu, China[J].Mountain Research,2020,(3):473-482.[doi:10.16089/j.cnki.1008-2786.000485]
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泥石流拦挡坝破损分析及优化对策——以陇南市武都区为例()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2020年第3期
页码:
473-482
栏目:
山地技术
出版日期:
2020-07-20

文章信息/Info

Title:
Investigation of the Failure Patterns of Debris flow Retaining Dams and Optimized Engineering Countermeasures—A Case Study at Wudu District of Longnan City, Gansu, China
文章编号:
1008-2786-(2020)3-473-10
作者:
刘兴荣; 周自强*; 董耀刚; 吴玮江; 魏万鸿
甘肃省科学院 地质自然灾害防治研究所,兰州 730000
Author(s):
LIU Xingrong; ZHOU Ziqiang; DONG Yaogang;  WU Weijiang; WEI Wanhong
Geological Hazards Prevention Institute, Gansu Academy of Sciences,Lanzhou 730000,China
关键词:
泥石流拦挡坝;  拦挡坝破损;  统计分析;  优化对策
Keywords:
debris flow retaining dam;  damage types;  statistical analysis;  optimized countermeasures in engineering
分类号:
X43
DOI:
10.16089/j.cnki.1008-2786.000485
文献标志码:
A
摘要:
拦挡坝的破损研究是困扰泥石流治理工程的主要难点之一,分析总结拦挡坝破损原因,优化其设计理念十分重要。本文对陇南市武都区16条沟道的65道泥石流拦挡坝破损形式及导致坝体破损的相关条件进行详细调查和统计分析。结果表明:(1)拦挡坝破损形式主要有以下几种(按破损概率由大到小排序),依次为副坝破损、坝肩破损、溢流口破损、基础破损、冲毁(失去功能)、勾缝破损;(2)根据拦挡坝破损特征统计分析,确定其破损主要与泥石流性质、圬工材料、坝体高度、坝体选址、坝肩保护、基础保护和库容淤积等情况有关;(3)导致拦挡坝破损的主要原因总结为对沟道机理认识不足、坝体自身存在缺陷和保护措施不当。在此基础上,从理论研究、工程管理、拦挡坝体系设计、新技术新方法应用等方面着手,提出了拦挡坝防治工程优化对策。
Abstract:
One of the engineering problems in debris flow control projects is to find out the failure patterns of retaining dams(check dams)and correspondingly to optimize their designs, which is challenging investigators. In this study, it made a detailed field investigation and statistical analysis of the damage patterns and the associated forming conditions of debris flow retaining dams, which was located at 16 gullies of Wudu District, Longnan City, Gansu, China and suffered serious damages due to debris flows. The results show that:(1)The damage types of retaining dams are mainly grouped as follows(in order of percentage of damages from high to low): auxiliary dam breakage, abutment breakage, overflow mouth breakage, foundation failure, erosion sabotage(loss of function)and jointing cracking.(2)By analyzing the damage characteristics of retaining dams, it is concluded that the damages are mainly relevant to the properties of debris flows, masonry materials, dam height, dam site selection, dam abutment protection, dam foundation protection and storage capacity occupation.(3)The main reasons for the damages of retaining dams are summarized as follows: poor understanding of gully formations, structural defects in retaining dams and improper design or layout of retaining dams. According to aforesaid investigations, some optimization countermeasures for retaining dam prevention and control engineering are proposed in terms of the four approaches: theoretical exploration, construction management, design of retaining dam complex and the application of new technologies and new methods, etc. This research would be helpful to debris flow prevention and control engineering in China.

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备注/Memo

备注/Memo:
收稿日期(Received date):2020-02-28; 改回日期(Accepted date):2020-05-12
基金项目(Foundation item):第二次青藏高原综合科学考察研究资助(2019QZKK0902); 甘肃省科技计划项目(18JR3RA251); 甘肃科学院科技产业化项目(CY08)。[The Second Tibetan Plateau Scientific Expedition and Research Program(2019QZKK0902); The Projects of the Gansu Department of Science(18JR3RA251); Science and Technology Industrialization Project of Gansu Academy of Sciences(CY08)]
作者简介(Biography):刘兴荣(1979-),男,甘肃靖远人,副研究员,主要研究方向:地质灾害防治。[LIU Xingrong(1979-),male,born in Jingyuan,Gansu Province,associate research fellow,mainly engaged in geological disaster prevention and control]E-mail:402794885@ qq.com
*通讯作者(Corresponding author):周自强(1965-)男,甘肃天水人,研究员,主要研究方向:地质灾害防治。[ZHOU Ziqiang( 1970-),male,born in Tianshui,Gansu Province,research fellow,mainly engaged in geological disaster prevention and control]E-mail: zzq01118@163.com
更新日期/Last Update: 2020-05-30