[1]陈春光,姚令侃,杨庆华,等.基于堰流理论的泥石流堵河模型研究[J].自然灾害学报,2012,21(06):131-135.
 CHEN Chunguang,YAO Lingkan,YANG Qinghua,et al.Study of river-blocking due to debris flow based on weir flow theory[J].,2012,21(06):131-135.
点击复制

基于堰流理论的泥石流堵河模型研究
分享到:

《自然灾害学报》[ISSN:/CN:23-1324/X]

卷:
21
期数:
2012年06期
页码:
131-135
栏目:
出版日期:
2012-12-20

文章信息/Info

Title:
Study of river-blocking due to debris flow based on weir flow theory
作者:
陈春光 姚令侃 杨庆华 刘翠容
西南交通大学土 木工程学院,四川 成都 610031
Author(s):
CHEN Chunguang YAO Lingkan YANG Qinghua LIU Cuirong
School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031,China
关键词:
泥石流堵河堰流溃坝
Keywords:
debris flowriver-blockingweir flowdam breaking
分类号:
P642.23
摘要:
大规模泥石流进入主河道时,常发生堵河现象。通过分析已有的研究成果,可将泥石流堵河类型简化为3种情况,完全堵河模型、局部堵河模型和潜坝式堵河模型;从溃坝波流理论对溃坝与堰流模型相似度的分析,进而提出了用于研究泥石流堵河规律的"拟似恒定堰流模型",并建立了局部堵河和泥石流潜坝式堵河的数学方程,数值计算可得到泥石流坝前水深及坝口流速的变化规律;为验证模型的合理性,进行了室内模型实验,测定了泥石流在交汇区的堆积形态和堆积量、泥石流交汇口上游水深动态变化。实验结果表明,计算结果与实测水深曲线整体吻合度较好,理论模型对泥石流交汇初期的冲击波流考虑得还不够,但从泥石流堆积形态和堆积总量来看,假设模型是合理的。
Abstract:
When debris flow, which contains large quantities of stone, sand and clay particles, enters into the mainstream, the river is frequently blocked. According to the results of existing research, river-blocking types due to debris flow can be briefly summarized into three cases, completely blocking model, partial blocking model, and submerged dam model. Based on theory of dam break wave flow,analysis results indicated that the overflow of dam breaking and weir flow are similar on the whole. A pseudo steady weir flow model to study river-blocking was proposed in tern, and the mathematical equations for describing the partial blocking and mudslides submerged dam were established, and by numerical calculation it can be available the change of water depth in front of the dam and overflow velocity with time. Through laboratory experiments, the morphology and volume of accumulation body of debris flow, and water depth of the main channel,were examined, the results show that calculating result is in good agreement with measured water depth curve, and the assumed model is reasonable.

相似文献/References:

[1]聂娟,范一大,邓磊,等.山洪灾害雷达遥感灾情评估技术研究与应用[J].自然灾害学报,2010,19(03):105.
 NIE Juan,FAN Yi-da,DENG Lei,et al.Research and application of torrential flood loss assessment based on radar remote sensing technology[J].,2010,19(06):105.
[2]刘希林,陈宜娟.泥石流点密度和面密度对区域泥石流危险度的影响——对比研究[J].自然灾害学报,2011,20(02):036.
 LIU Xi-lin,CHEN Yi-juan.Influence of debris flow spot and area densities on regional hazardousness of debris flow:a comparative study[J].,2011,20(06):036.
[3]杨成林,陈宁生,李战鲁.汶川地震次生泥石流形成模式与机理[J].自然灾害学报,2011,20(03):031.
 YANG Cheng-lin,CHEN Ning-sheng,LI Zhan-lu.Formation mode and mechanism fordebris flow induced by Wenchuan earthquake[J].,2011,20(06):031.
[4]杨月巧,胡俊锋,郗蒙浩.基于灰色关联法的舟曲泥石流灾害影响因素分析[J].自然灾害学报,2011,20(03):139.
 YANG Yue-qiao,HU Jun-feng,XI Meng-hao.Analysis of influence factors of debris flow disaster in Zhouqu based on grey relevance method[J].,2011,20(06):139.
[5]李倩,黄勇.新疆天山公路泥石流风险评价研究[J].自然灾害学报,2011,20(04):154.
 LI Qian,HUANG Yong.Risk evaluation of debris flow for Tianshan Highway in Xinjiang[J].,2011,20(06):154.
[6]梁专明.新化县水车镇泥石流灾害研究[J].自然灾害学报,2011,20(05):032.
 LIANG Zhuan-ming.Study on debris flow disaster in Shuiche Town, Xinhua County[J].,2011,20(06):032.
[7]李朝安,胡卸文,王良玮.山区铁路沿线泥石流泥位自动监测预警系统[J].自然灾害学报,2011,20(05):074.
 LI Chao-an,HU Xie-wen,WANG Liang-wei.Automatic monitoring and early warning system of mud-position of debris flow along railway line in mountainous area[J].,2011,20(06):074.
[8]耿慧辉,贾景超.都江堰龙池镇三神公泥石流灾害特征[J].自然灾害学报,2012,21(06):136.
 GENG Huihui,JIA Jingchao.Features of Sanshengong debris flow hazard in Longchi Town of Dujiangyan City[J].,2012,21(06):136.
[9]冯杭建,唐小明,周爱国.浙江省泥石流与降雨历时关系研究及应用检验[J].自然灾害学报,2013,22(01):159.
 FENG Hangjian,TANG Xiaoming,ZHOU Aiguo.Study on relationship between rainfall duration and occurrence of debris flow in Zhejiang Province and its application examination[J].,2013,22(06):159.
[10]刘兴荣,董耀刚,王生新,等.成县黄渚镇泥石流形成机理及特征[J].自然灾害学报,2013,22(01):169.
 LIU Xingrong,DONG Yaogang,WANG Shengxin,et al.Formation mechanism and characteristics of debris flows in Huangzhu Town,Chengxian County[J].,2013,22(06):169.
[11]宋志,邓荣贵,陈泽硕.典型泥石流堵河案例运动过程与堆积区特征分析——以四川石棉熊家沟泥石流为例[J].自然灾害学报,2016,25(01):074.[doi:10.13577/j.jnd.2016.0109]
 SONG Zhi,DENG Ronggui,CHEN Zeshuo.Analysis of motion process and accumulation zone characteristics of a typical debris flow blocking river case:a case study of the debris flow in Xiongjia Gully[J].,2016,25(06):074.[doi:10.13577/j.jnd.2016.0109]
[12]刘翠容,姚令侃,陈春光,等.基于异重流理论的潜坝堵河判别方法[J].自然灾害学报,2014,23(05):113.[doi:10.13577/j.jnd.2014.0515]
 LIU Cuirong,YAO Lingkan,CHEN Chunguang,et al.A distinguishing method for the river blocking from submerged dam based on the theory of gravity current[J].,2014,23(06):113.[doi:10.13577/j.jnd.2014.0515]

备注/Memo

备注/Memo:
收稿日期:2011-12-29;改回日期:2012-2-25。
基金项目:国家重点基础研究发展计划(973计划)(2011CB409902)
作者简介:陈春光(1959-),男,教授,博士,主要从事城市防灾研究.E-mail:chen-cg@swjtu.edu.cn
更新日期/Last Update: 1900-01-01