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Analysis on Dam-Breaking Mode of Tangjiashan Barrier Dam in Beichuan County

ISSN号：1672-6316
期刊名称：Journal of Mountain Science
时间：2011.4.15
页码：354-362
分类：P315.727[天文地球—地震学;天文地球—固体地球物理学;天文地球—地球物理学] TV698.1[水利工程—水利水电工程]
作者机构：[1]Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 610031, China, [2]State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China, [3]Aseismic Engineering Technology Key Laboratory of Sichuan Province,Southwest Jiaotong University,Chengdu 610031, China, [4]Chengdu Hydroelectric Investigation and Design Institute, China Hydropower Consulting Group, Chengdu 610072, China
相关基金：funding from the National Natural Science Foundation Project （Grant No. 40772175 40972175）; the Scientific research fund of Southwest Jiaotong University （Grant No.2008-A01）; the Opening Fund of State Key Laboratory of Geohazard Prevention and Geoenvironment Protection （Chengdu University of Technology）（Grant No. DZKJ–08012）; the National Natural Science Foundation Project-mutual fund of Yunnan Province （Grant No.U1033601）
相关项目：植被发育斜坡对强降雨过程的地下水响应机制及其灾害效应

关键词：大坝, 地震地质资料, 山体滑坡, 斜坡稳定性, 滑动位移, 滑动速度, 地质调查, 地质结构, Tangjiashan, Barrier Dam, High-speed landslide, Blocking river, Dam-breaking

中文摘要：

Tangjiashan 山崩是典型 highspeed 媒介陡峭的剧降角度的作为结果的山崩。地震触发的这山崩发生了在关于半分钟。相对滑动排水量是 900 米，因此平均滑动速度每秒是大约 30 米。被高速度的山崩沿着河形成的障碍水坝的纵的长度是 803.4 米；并且最大的宽度十字路口河是 611.8 米。并且它的体积被估计大约 2037 万立方米。通过障碍水坝的详细地质的调查，和在地震前的早地质的信息，当水水平处于状况到达不同举起时，障碍水坝和它在上游、下游的斜坡的稳定性的地质的结构被学习在有 7 或 8 Richter 规模的地震紧张的震动以后不断。在这个基础上，障碍水坝的打破水坝的模式深深地被讨论。从而，分析结果提供重要指导，到 Tangjiashan 障碍的前面总部的忠告建水坝，以便一些合适的工程措施能被实现并且泛滥分泌物能被执行很好。

英文摘要：

Tangjiashan landslide is a typical high-speed consequent landslide of medium-steep dip angle. This landslide triggered by earthquake took place in about semi-minute. The relative sliding displacement is 900 meters, so average sliding speed is about 30 meters per second. The longitudinal length of barrier dam which is formed by high-speed landslide along river is 803.4 meters; and maximum width crossing river is 611.8 meters. And its volume is estimated about 20.37 million steres. Through detailed geological investigation of the barrier dam, together with early geological information before earthquake, geological structures of the barrier dam and its stability of upstream and downstream slopes are studied when water level reaches different elevations in condition of continual after shocks with seismic intensity of 7 or 8 Richter scale. On this basis, dam-breaking mode of barrier dam is discussed deeply. Thereby, analytic results provide significant guidance and advices to front headquarters of Tangjiashan barrier dam, so that some proper engineering measures can be implemented and flood discharge can be carried out well.

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