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| 1 | Measuring the Internal Velocity of Debris Flows Using Impact Pressure Detecting in the Flume Experiment显示文摘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. | YANG Hongjuan WEI Fangqiang HU Kaiheng Sergey CHERNOMORETS HONG Yong LI Xiaoyu XIE Tao | 2011 | Journal of Mountain Science2011，8，2： | 12 |
| 2 | A Seismically Triggered Landslide in the Niujuan Valley near the Epicenter of the 2008 Wenchuan Earthquake显示文摘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 Niujuan (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 Niujuan landslide, debris flows have been more active in Lianhuaxingou and Niujuan valleys because of the accumulated mass of debris. | 韦方强 Sergey Chernomorets Konstantin Aristov Dmitry Petrakov Olga Tutubalina 苏鹏程 江玉红 徐爱淞 Alexey Petrasov | 2010 | Journal of Earth Science2010，21，6： | 4 |
| 3 | Modeling potential scenarios of the Tangjiashan Lake outburst and risk assessment in the downstream valley显示文摘 | Vera KIDYAEVA Sergey CHERNOMORETS Inna KRYLENKO Fangqiang WEI Dmitry PETRAKOV Pengcheng SU Hongjuan YANG Junnan XIONG | 2017 | Frontiers of Earth Science2017，11，3： | 0 |
| 4 | Measuring Internal Velocity of Debris Flows by Temporally Correlated Shear Forces显示文摘Debris flow is a kind of geological hazard occurring in mountain areas.Its velocity is very important for debris flow dynamics research and designing debris flow control works.However,most of past researches focused on surface velocity and mean velocity of debris flow,while few researches involve its internal velocity because there is no available method for measuring the internal velocity for its destructive power.In this paper,a method of temporally correlated shear forces(TCSF) for meas-uring the internal velocity of debris flows is proposed.The principle of this method is to calculate the internal velocity of a debris flow using the distance between two detecting sections and the time differ-ence between the two waveforms of shear forces measured at both sections.This measuring method has been tested in 14 lab-based flume experiments. | 韦方强 杨红娟 胡凯衡 Sergey Chernomorets | 2012 | Journal of Earth Science2012，23，3： | 0 |
| 5 | 勘察加半岛中部的火山泥石流显示文摘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。 | 胡凯衡 马超 柳金峰 张少杰 Sergey Chernomorets | 2015 | 山地学报2015，33，1： | 0 |
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