地震堰塞湖人工排泄断面优化初探

英文篇名：Preliminary Discussion on Optimizing Artificial Drainage Sections of Earthquake Dammed Lakes
中文刊名：灾害学
英文刊名：Journal of Catastrophology
作者：赵万玉 ; 陈晓清 ; 高全
英文作者：Zhao Wanyu1 ; 2 ; Chen Xiaoqing1 ; 3 and Gao Quan1 ; 2(1.Institute of Mountain Hazards and Environment ; CAS ; Chengdu 610041 ; China ; 2.Graduate University of Chinese Academy of Sciences ; Beijing 100049 ; China ; 3.Key Laboratory of Mountain Hazards and Surface Processes ; CAS ; Chengdu 610041 ; China)
中文关键词：地震堰塞湖 ; 应急排险 ; 人工排泄 ; 泄流槽 ; 断面优化 ; 汶川8.0级地震
英文关键词：earthquake dammed lake ; emergency treatment ; artificial drainage ; drainage channel ; section optimizition ; M8.0 Wenchuan earthquake
出版日期：2010-06-20
机构：中国科学院·水利部成都山地灾害与环境研究所;中国科学院研究生院;中国科学院山地灾害与地表过程重点实验室;
年：2010
期：02
出版单位：灾害学

摘要

汶川8.0级特大地震诱发了以唐家山堰塞湖为典型的大量堰塞湖,对上下游人民生命财产安全造成了严重的威胁和危害。对震后堰塞湖的处置成为今后次生山地灾害减灾的一大关键性课题。在回顾和总结唐家山堰塞湖的应急排险经验的基础上,对泄流槽纵、横断面的优化进行了初步的探讨。同时在开挖过程中,也应考虑堰塞体组成物质、抗冲稳定性、施工设备等因素选择泄流槽体型。震后5～10年是泥石流、滑坡灾害的活跃期,发生大规模泥石流、滑坡堵江事件的可能性也随之增加,期望研究能够为堰塞湖的排险处理提供一定的技术参考。
A large number of dammed lakes,including the Tangjiashan dammed lake as a typical one,were induced by Wenchuan earthquake,which have brought severe threat and damage to life and property of people around the upstream and downstream.The treatment of dammed lakes after earthquake is a major issue in research on prevention of secondary mountain hazards in the future.Based on review and summary of the experience on emergency treatment of the Tangjiashan dammed lake,optimization for longitudinal and cross sections of drainage channel is preliminarily discussed.During the process of excavation,factors as composition materials of barrier body,Impact stability,construction equipments,etc.should also be put into consideration to determine types of drainage channels.Debris flows and landslides shall remain active in about 5 to 10 years after an earthquake and accordingly,the possibility of large-scaled river blockage caused by debris flows or landslides shall increase.It is hoped that the results of this research can provide technical reference for treatment of dammed lakes.

引文

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