西藏冰湖灾害分析及典型应急处理案例  

Disaster Analysis of Glacial Lake in Tibet and Typical Cases of Emergency

作　　者：小巴桑 戴林军[2] 

机构地区：[1]西藏自治区防汛机动抢险队,西藏拉萨850000 [2]河海大学水利水电学院,江苏南京210098

出　　处：《水电能源科学》2011年第10期75-77,215,共4页Water Resources and Power

摘　　要：介绍了西藏冰湖灾害的分布、特点,分析了冰湖溃决成因及溃决方式,提出了冰湖灾害应急处理措施,并以紧邻的皮达湖、龙巴萨巴湖2座冰碛阻塞湖为例,确定了应急除险设计中冰湖的泄流量、开挖渠道的断面尺寸及施工变更情况,除险后消除了冰湖溃决险情,同时也截断了皮达湖、龙巴萨巴湖之间的水力联系,除险效果很好。This paper introduces the disaster distribution and features of glacial lake in Tibet and analyzes the causes and modes of glacial lake break. And it proposes the disaster emergency handling measures of glacial lake. Taking two close neighbour moraine blocked lakes of Pida Lake and Longbasaba Lake as examples, it determines the discharge volume of glacial lake emergency danger control design, the cross-section size of channel excavation, and the change of construction. After taking these measures, it eliminates the danger of glacial lake break and cuts off the hydraulic connection of two lakes, which gains good effect.

关 键 词：冰湖 冰碛阻塞湖 灾害 特点 成因 应急处理 措施 

分 类 号：TV87[水利工程—水利水电工程] P642[天文地球—工程地质学]