摘要
2020年7月湖北省清江流域出现持续强降雨,导致恩施市屯堡镇境内清江左岸发生沙子坝滑坡,形成了堰塞湖,危及下游城镇安全。屯堡堰塞湖位于大比降河道,坝高库小,堰塞体物质以松散覆盖层为主,抗冲刷能力弱。经分析堰塞湖溃决洪水淹没风险,基于应急与常态统合管理理论提出了以非工程措施为主,抢险与避险相结合的堰塞湖风险处置策略,构建了堰塞湖应急处置立体监测保障体系。实践证明:基于统合管理理论的堰塞湖应急处置有效避免了大量抢险救灾力量的提前集中部署,大幅降低了应急处置成本,体现了统合管理理论在堰塞湖风险处置中的实用性和重要性。
In July 2020,continuous heavy rainfall occurred in the Qingjiang River Basin,Hubei Province,which resulted in the Shaziba landslide on left bank of the Qingjiang River in Tunbao Town,Enshi City.The landslide formed a barrier lake,endangering the safety of downstream towns.The Tunbao barrier lake was located in a great descending river channel with the characteristics of high dam but small reservoir.The material of landslide dam was mainly loose overburden and had low erosion resistance.According to the above characteristics,and by analyzing outburst flood inundation risk of the barrier lake,we proposed risk disposal strategy based on the emergency and normal coordinated management theory,the risk disposal strategy for barrier lake mainy based on non engineering measures,and combination of emergency rescue and risk avoidance was proposed,and then a stereo monitoring system for emergency treatment of landslide-dammed lake was constructed.The disposal of Tunbao barrier lake based on coordinated management theory avoided massive unnecessary deployment of rescue personnel and machines,thus reducing the disposal cost significantly.The results show that the coordinated management is scientific and effective in the risk disposal of barrier lakes.
作者
杨启贵
姚晓敏
申邵洪
徐琨
卢少为
YANG Qigui;YAO Xiaomin;SHEN Shaohong;XU Kun;LU Shaowei(Changjiang Institute of Survey,Planning,Design and Research,Wuhan 430010,China;Hubei Institute of Water Resources Survey and Design,Wuhan 430064,China;Changjiang River Scientific Research Institute,Wuhan 430010,China)
出处
《人民长江》
北大核心
2020年第12期25-30,共6页
Yangtze River
基金
“十三五”国家重点研发计划“高风险堰塞湖应急处置技术研究”(2018YFC1508605)。
关键词
堰塞湖风险分析
风险处置
应急与常态统合管理
屯堡堰塞湖
risk analysis of barrier lake
risk disposal
routine and emergency coordinated management theory
Tunbao barrier lake
