• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database
Volume 22 Issue 3
Jun.  2009
Turn off MathJax
Article Contents
HU Xiewen, LÜ, Xiaoping, HUANG Runqiu, REN Xiaoming, WANG Xuerui, LIU Juan. Analyses of River-Blocking and Breaking Mode of '9·24' Debris Flow near Tangjiashan Barrier Dam[J]. Journal of Southwest Jiaotong University, 2009, 22(3): 312-320,326.
Citation: HU Xiewen, LÜ, Xiaoping, HUANG Runqiu, REN Xiaoming, WANG Xuerui, LIU Juan. Analyses of River-Blocking and Breaking Mode of "9·24" Debris Flow near Tangjiashan Barrier Dam[J]. Journal of Southwest Jiaotong University, 2009, 22(3): 312-320,326.

Analyses of River-Blocking and Breaking Mode of "9·24" Debris Flow near Tangjiashan Barrier Dam

  • Received Date: 13 Apr 2009
  • Publish Date: 20 Jun 2009
  • "5·12" Wenchuan earthquake caused a high-speed landslide on the Tangjiashan mountain to block the Tongkou river to form the Tangjiashan dammed lake. After a normal discharge on June 10,2008,there were potential hazards of stability loss of remnant Tangjashan mountain body and debris flows in Dashui and Xiaoshui ditches on the right bank of Tangjashan barrier dam. Through an on-the-spot investigation,due to the effect of the earthquake collapses and landslides developed in Dashui,Xiaoshui and Wuming ditches to form extremely rich loose sources,having all conditions of slope and valley debris flows. That become one of the potential serious dangers of geological disasters after the Tangjiashan dammed lake had been successfully discharged and controlled the normal use of the Tangjiashan dammed lake. "6·14" and "9·24" debris flows,two large-scale debris flows occurring respectively on June 14 and September 24,2008,made the Tongkou river blocked respectively for 4 and 17 h. Based on identifying the distribution and stability of loose sources in the three ditches on the right bank of the Tangjiashan barrier dam and importantly by combining the developmental situation of "9·24" debris flow,the developmental and dynamic features of the three ditches,especially the river-blocking situation at discharge spout of the Tangjiashan barrier dam and breaking mode when the three ditches break out debris flows at the same time under different rain frequencies,were analyzed systematically. The research result shows that the possibility that debris fans break once completely is very small after debris flows block the river,and the breaking mode is that firstly flood flows over the edge of debris fans,secondly crushes and scours the left of the barrier body,finally rushes out debris fans gradually. This mode provides a guidance and reference for the research on debris flow in the disaster areas after the Wenchuan earthquake.

     

  • loading
  • 胡卸文,吕小平,黄润秋,等.唐家山堰寨湖大水沟泥石流发育特征及堵江危害性评价[J].岩石力学与工程学报,2009,28(4):850-858.HU Xiewen,L(U) Xiaoping,HUANG Runqiu,et al.Developmental features and evaluation of blocking dangers of Dashui ditch debris flow in Tangjiashan dammed lake[J].Chinese Journal of Rock Mechanics and Engineering,2009,28(4):850-858.[2] 胡卸文,黄润秋,施裕兵,等.唐家山滑坡堵江机制及堰塞坝溃坝模式分析[J].岩石力学与工程学报,2009,28(1):181-189HU Xiewen.HUANG Runqiu,SHI Yubing,et al.Analysis on blocking river mechanism of Tangjiashan landslide and dam-breaking mode of its barrier dam[J].Chinese Journal of Rock Mechanics and Engineering,2009,28(1):181-189.[3] 唐兴邦.中国泥石流[M].北京:商务印书馆,2000:246-295.[4] 陈洪凯,唐春梅,陈野鹰.公路泥石流研究及治理[M].人民交通出版社,2004:47-58.[5] 谢洪,钟敦伦,韦方强.我国山区城镇泥石流灾害及其成因[J].山地学报,2006,24(1):79-87.XIE Hong,ZHONG Dunlun,WEI Fangqiang.Debris flow hazards and their formation causes in mountain urban area of China[J].Journal of Mountain Science,2006,24(1):79-87.[6] HUNGR O.Analysis of debris flow surges using the theory of uniformly progressive flow[J].Earth Surface Processes and Landforms,2000,25:483-495.[7] IVEILSON M,RCOSTN E J,LAHUSEN G R.Large-scale debris-flow flume becomes operational in Oregon[C]∥Landslide News.[S.l.] :[S.n.] ,1993:29-30.[8] TAMOTSU T.Debris flow[M].Rotterdam:A.A.Balkma,1991:26-89.[9] 张金山,沈兴菊,谢洪.泥石流堵河影响因素研究--以岷江上游为例[J].灾害学,2007,22(2):82-86.ZHANG Jinshan,SHEN Xingju,XIE Hong.Study on factors affecting the fiver-blocking due to debris-flow in the upper reaches of Minjiang River[J].Journal of Catastrophology,2007,22(2):82-86.[10] 刘希林,唐川.泥石流危险性评价[M].北京:科学出版社,1995:84-91.[11] 王裕宜,胡凯衡.泥石流体的流变和冲淤特征及其与危险度的关系[J].自然灾害学报,2007,16(1):17-22.WANG Yuyi,HU Kaiheng.Relationship between rheology/erosion-deposit properties of debris flow and its hazard degree[J].Journal of Natural Disasters,2007,16(1):17-22.
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索
    Article views(1670) PDF downloads(324) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return