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Modeling potential scenarios of the Tangjiashan Lake outburst and risk assessment in the downstream valley

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Frontiers of Earth Science 2017年第3期11卷 579-591页

作者： Vera KIDYAEVA sergey chernomorets Inna KRYLENKO Fangqiang WEI Dmitry PETRAKOV Pengcheng SU Hongjuan YANG Junnan XIONG Lomonosov Moscow State University Faculty of Geography 119991 Moscow Russia Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu 610041 China Institute of Green and Intelligent Technology Chinese Academy of Sciences Chongqing 400714 China

This research is devoted to Taniashan Lake, a quake landslide-dammed lake, situated in Sichuan Pro- vince, China, which was formed by a landslide triggered by the Wenchuan Earthquake on 12 May 2008. A STREAM_2D two-dimensional hydrodynamic model of Russia was applied to simulate the process of two flood scenarios： 1, lake dam outbreak, and 2, dam overtopping. An artificial dam outbreak was made after the earthquake to lower the water level of the lake in 2008, which led to a great flood with a maximum water discharge of more than 6400 m3/s. The negative impact of the flood was reduced by a timely evacuation of the population. Flood hazards still remain in the event of new landslides into the lake and lake dam overtopping （Scenario 2）, in which case a maximum water discharge at the dam crest would reach 5000 m3/s, placing the population of Shabacun and Shilingzi villages in the zone of flood impact.

关键词： Tangjiashan Lake landslide-dammed lakeoutburst hydrodynamic modeling risk assessment

A Seismically Triggered Landslide in the Niujuan Valley near the Epicenter of the 2008 Wenchuan Earthquake

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Journal of Earth Science 2010年第6期21卷 901-909页

作者：韦方强 sergey chernomorets Konstantin Aristov Dmitry Petrakov Olga Tutubalina 苏鹏程江玉红徐爱淞 Alexey Petrasov Key Laboratory of Mountain Hazards and Surface Process Chinese Academy of Sciences Institute of Mountain Hazards and Environment Chinese Academy of Sciences Faculty of Geography Moscow State University Sergeev Institute of Environmental Geoscience Russian Academy of Sciences

The Wenchuan （汶川） earthquake on 12 May 2008 induced a large number of landslides, collapses, and rockfalls along the Longmenshan （龙门山） fault. The landslide in Niujnau （牛圈） Valley （named Niujuan landslide）, close to the epicenter, is one that travelled a long distance with damaging consequences. Using QuickBird satellite images and GIS tools, the seismogenic mass movements are analyzed, and the movement phases, travel path, and post-catastrophic processes of Niujuan landslide are described and discussed. Image interpretation and a GPS survey showed that the mass movements denuded 37% of the research area. The Niujuan landslide moved 1 950 m along the Lianhuaxingou （莲花心沟） stream, transformed to a debris avalanche, and accumulated in the downstream bed of Niujuan Valley, where they formed a dam 30 m in height, blocking the Niujuan stream and creating a barrier lake basin with 0.11 million m3 storage capacity. Subsequent to the Ninjuan landslide, debris flowshave been more active in Lianhuaxingou and Niujuan valleys because of the accumulated mass of debris.

关键词： Wenchuan earthquake landslide debris flow debris avalanche.

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Measuring the Internal Velocity of Debris Flows Using Impact Pressure Detecting in the Flume Experiment

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Journal of Mountain Science 2011年第2期8卷 109-116页

作者： YANG Hongjuan WEI Fangqiang HU Kaiheng sergey chernomorets HONG Yong LI Xiaoyu XIE Tao Key Laboratory of Mountain Hazards and Surface Process ChineseAcademy of Sciences Chengdu 610041 China Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu 610041 China Faculty of Geography Moscow State University Moscow Russia

Measuring the internal velocity of debris flows is very important for debris flow dynamics research and designing debris flow control works. However, there is no appropriate method for measuring the internal velocity because of the destructive power of debris flow process. In this paper, we address this problem by using the relationship between velocity and kinetic pressure, as described by surface velocity and surface kinetic pressure data. Kinetic pressure is the difference of impact pressure and static pressure. The former is detected by force sensors installed in the flow direction at the sampling section. Observations show that static pressure can be computed using the formula for static water pressure by simply substituting water density for debris flow density. We describe the relationship between surface velocity and surface kinetic pressure using data from seven laboratory flume experiments. It is consistent with the relationship for single phase flow, which is the measurement principle of the Pitot tube.

关键词： Internal velocity Measurement Debris flow Impact pressure

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勘察加半岛中部的火山泥石流

山地学报 2015年第1期33卷 123-128页

作者：胡凯衡马超柳金峰张少杰 sergey chernomorets 中国科学院山地灾害与地表过程重点实验室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大学 Faculty of Geography Lomonosov Moscow State University

勘察加半岛是世界著名的火山区,与火山相关的熔岩流、碎屑流和泥石流现象非常普遍,其形成、运动特征以及基本物质组成也与我国暴雨泥石流有很大差别。作者于2013年8月实地考察了该区中东部Shiveluch、Klyuchevskoy和Tolbachik三座活火... 详细信息

勘察加半岛是世界著名的火山区,与火山相关的熔岩流、碎屑流和泥石流现象非常普遍,其形成、运动特征以及基本物质组成也与我国暴雨泥石流有很大差别。作者于2013年8月实地考察了该区中东部Shiveluch、Klyuchevskoy和Tolbachik三座活火山的泥流、火山碎屑流和熔岩流灾害。通过考察获得的第一手资料,结合研究区地形、地质、气象等背景信息,对火山泥石流形成的基本控制条件、物质组成和堆积特征进行了简要介绍和分析,希望对我国火山泥石流研究有所帮助。

关键词：火山泥石流火山碎屑流勘察加熔岩流