附录一 外文文献.doc

2012,24(6):914-924 DOI: 10.1016/S1001-6058(11)60319-3 RESERVOIR SEDIMENTATION AND TRANSFORMATION OF MORPHO-LOGY IN THE LOWER YELLOW RIVER DURING 10 YEAR’S INITIAL OPERATION OF THE XIAOLANGDI RESERVOIR* CHEN Jian-guo International Research and Training Center on Erosion and Sedimentation (IRTCRS), Beijing 100048, China, E-mail: chenjg@ ZHOU Wen-hao, CHEN Qiang China Institute of Water Resources and Hydropower Research (IWHR), Beijing 100048, China (Received June 1, 2012, Revised July 14, 2012) Abstract: The Xiaolangdi Hydro-Project is one of the large projects on the main stem of the Middle Yellow River. It has been operated for more than 10 years, since its impoundment in October, 1999. The reservoir has trapped 2.833×109 m3 of sediment, and caused the total erosion of 1.891×109 t in the Lower Yellow River from October, 1999 through October, 2010. Not only the serious atrophied situation of the Lower Yellow River (LYR) has been resuscitating, but also many new phenomena of sediment transport and behaviors of channel re-establishing are coming into being. They are illustrated and discussed in detail in this paper. Key words: reservoir sedimentation, density current, water-sediment regulation, artificial flood, channel siltation and erosion,erosion efficiency, river configuration Introduction The Lower Yellow River (LYR) carrying an enormous amount of sediment is notorious for its serious deposition. It has a channel composed of fine bed materials characterized by easy erosion, easy siltation and high speed of morphology changes. It has suffered two remarkable channel erosion processes in recent 50 years. The first continuous erosion along the river happened during 1960-1964 when the Sanmenxia Reservoir (SMX) was impounded[1]. After two reconstruction operations of the reservoir, due to its serious deposition, the LYR returned to the state of severe siltation. Especially,under the deteriorated climat conditions, the