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A Physical Modeling Case Study on Sediment Disasters of Waterpower Stations in Mountain Rivers 被引量:4
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作者 LIU Xingnian CAO Shuyou HUANG Er (State Key Lab.of Hydraulics and Mountain River Eng.,Sichuan Univ.,Chengdu 610065,China) 《四川大学学报(工程科学版)》 EI CAS CSCD 北大核心 2005年第S1期1-6,共6页
A physical modeling case study on flood and sediment disaster of waterpower stations in mountain rivers was conducted.Field observations and laboratory experiments show that the reasons induced disasters of Boluo Wate... A physical modeling case study on flood and sediment disaster of waterpower stations in mountain rivers was conducted.Field observations and laboratory experiments show that the reasons induced disasters of Boluo Waterpower Station are those main characteristics of mountain rivers in South-Western China.High speed flows with velocities between 10 to 20 m/s are provided with strong sediment canting capacity in flood season.Steep banks with thick loose surfaces are rich in sediment supply by landslides and... 展开更多
关键词 floods power-station sediment disaster
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The types and characteristics of man-induced sediment disaster
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作者 JIN Desheng, SHI Changxing, CHEN Hao, ZHANG Ouyang(Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China) 《Journal of Geographical Sciences》 SCIE CSCD 2002年第4期495-504,共10页
The man-induced sediment disaster includes material erosion, transportation and accumulation by human activities. It possesses special attribute in sociology and disaster science. In accordance with human activities, ... The man-induced sediment disaster includes material erosion, transportation and accumulation by human activities. It possesses special attribute in sociology and disaster science. In accordance with human activities, geomorphologic location, behavior and particular, the man-induced sediment disaster can be divided into 4 types: the drainage network, slope and gully, channel and plain-estuary-coastline. Each type includes erosion, transportation, accumulation, complexity and cascading. Based on human activity, geomorphology, sediment mechanics and catastrophology, the man-induced sediment disaster is characterized as follows: (1) accelerating tendency with geographical zoning back-ground; (2) non-order characters by blind action without special technical training; (3) gradually and sharply changing with human environment vibration; and (4) complexity and non-linear figure, etc. One of the reasons leading to man-induced sediment disaster is human environment vibration. 展开更多
关键词 man’s dynamics sediment disaster type CHARACTER
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Erosion and Sediment Disasters in Cambodia1
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作者 Bun Hean Vin Bun Pov 《Earthquake Research in China》 2002年第3期207-209,共3页
This report first gives a general description of Cambodia and then discusses its topographic and geological features. Finally, the current situation concerning erosion and sediment disasters is discussed.
关键词 Topographic and geological features Erosion and sediment disasters
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Sedimentation effects of the Dongting Lake Area 被引量:6
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作者 李景保 尹辉 +2 位作者 常疆 卢承志 周和平 《Journal of Geographical Sciences》 SCIE CSCD 2009年第3期287-298,共12页
According to a long series of measured sediment data, the sedimentation effects of the Dongting Lake Area (DIP,) were studied in light of the relationship between sedimentation characteristics and resources and envi... According to a long series of measured sediment data, the sedimentation effects of the Dongting Lake Area (DIP,) were studied in light of the relationship between sedimentation characteristics and resources and environment. The result shows that the long-term deposition and the impact of human activities have led to a cycle of the evolution of sedimentation pattern, resulting in sediment disaster effects and resources effects in the DLA. The main features are as follows: 1) The water beach, silt beach, lake marsh beach, reed beach and other types of beach shaped by sedimentation effects constitute the main body of the giant lake system. 2) The disaster chains are induced, i.e., sedimentation → marshland expansion and reclamation → flood function decline, fish resource depletion, biodiversity reduction dis- aster chain, sedimentation → marshland expansion → floods, water pollution disaster chain, sedimentation → marshland floating vegetation rising → schistosomiasis, rodents virulence disaster chain, sedimentation → flood embankment bursting → land desertification disaster chain. 3) Sedimentation has created about 98.13×10^4 hm^2 of land in the past 55 years. Rational development and utilization of marshland resources have produced tremendous economic benefits. 展开更多
关键词 sedimentATION lake beach sediment disaster chain sand resources
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