Key techniques for the emergency disposal of Quake lakes

Authors: Yang, Xingguo1; Yang, Zhaohui2; Cao, Shuyou3; Gao, Xingji4; Li, Shujian5

Source: Natural Hazards, Volume 52, Number 1, January 2010 , pp. 43-56(14)

Publisher: Springer

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Abstract:

The Wenchuan Earthquake of May 12, 2008 formed a large number of Quake lakes; 104 of them had a dam taller than 10 m, a water storage capacity larger than 1.0 × 105 m3, and a catchment area greater than 20 km2. If these Quake lakes are not thoroughly assessed and properly disposed, the losses caused by the burst of these lakes may be even larger than those caused by this earthquake itself. The Quake lakes with high risks have been properly disposed with the schemes proposed by the authors. This article presents a case study on the emergency disposal of the Tangjiashan, Laohuzui, Jiadanwan, and other Quake lakes. The key techniques applied in the emergency disposal of Quake lakes, including site exploration, risk assessment, design of discharge chutes, selection of construction method and equipment as well as post-emergency disposal evaluation, are discussed.

Keywords: Discharge chute; Emergency disposal; Quake lake; Wenchuan Earthquake

Document Type: Research Article

DOI: http://dx.doi.org/10.1007/s11069-009-9350-y

Affiliations: 1: State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, 610065, China 2: University of Alaska Anchorage, 3211 Providence Drive, Anchorage, AK, 99508, USA, Email: afzy@uaa.alaska.edu 3: State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, 610065, China, Email: caoshuyou@scu.edu.cn 4: College of Hydraulic and Hydroelectric Engineering, Sichuan University, Chengdu, 610065, China 5: Armed Police Hydroelectric General Corps 3 Detachment 10, Chengdu, 610090, China

Publication date: January 1, 2010

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