多沙粗沙区综合治理规划与减沙作用  

Comprehensive Control Planning of the Area with Abundant and Coarse Sediment and the Analysis of the Sediment Reduction Effect

作　　者：李敏[1] 王白春 许林军[1] 

机构地区：[1]黄河上中游管理局,陕西西安710021

出　　处：《人民黄河》2013年第10期124-126,共3页Yellow River

摘　　要：黄河中游多沙粗沙区是我国水土流失最严重和生态环境最脆弱的地区之一。通过分析黄河中游多沙粗沙区的环境条件,揭示了该地区水土流失状况、治理成效和存在的问题,论述了多沙粗沙区综合治理规划:近期(2020年以前)实施综合治理面积3.92万km2,建设淤地坝1.53万座,其中骨干坝0.42万座。分析了其减沙作用:采用多沙粗沙区1956—2000年实测多年平均输沙模数1.02万t/km2分析计算,到2020年拦沙工程年平均拦沙能力新增1.56亿t,在该地区建设大中型拦沙坝、开展综合治理措施是减少黄河泥沙的有效途径。Area with abundant and coarse sediment in the middle reaches of the Yellow River is one of the most vulnerable areas of China＇s most seri- ous soil erosion and ecological environment. In order to seek ways to reduce sediment of the Yellow River, this paper analyzed the environmental con- ditions of the area with abundant and coarse sediment in the middle reaches of the Yellow River; revealed the water loss and soil erosion and govern- ance effects and problems in the region ; discussed the comprehensive control planning of the area with abundant and coarse sediment. The recent im- plementation of the comprehensive control area was 39,200 km2 and 15,300 warping dams would be built, including 4,200 key dams. The thesis ana- lyzed the effect of sediment reduction： the average sediment modulus of the measured area with abundant and coarse sediment in the period of 1956 - 2000 was 10,200 t/km2 , by 2020, block sand block capacity would he increased by 156 million t. It put forward the construction of large and medi- um-sized check dams in the region and taking integrated control measures were an effective way to reduce the sediment of the Yellow River.

关 键 词：多沙粗沙区 水土流失 拦沙坝 黄河 

分 类 号：TV212.41[水利工程—水文学及水资源] TV882.1