摘要
淤地坝是水土保持中拦沙效益最为显著的措施,但在大范围调查时,由于群众性建坝的原始资料不足,难以准确、简便地计算其拦沙量。本文作者通过数学推导,建立了拦沙量与淤地面积、坝前淤积高度和反映沟道形状的综合系数K的关系式,用这易调查得到的参数,可比较准确地计算已淤坝地的拦沙量。
Silt-arrester is a kind of soil and water conservation work with remarkable benefit of retaining sediment. However, the amount of sediment retained by silt-arrester is difficult to be calculated by the data obtained in large-scale investigation due to shortage of original information of the silt-arresters made by masses. Through mathematical deduction, the author obtains a relation between the amount of sediment retention and the silted area, the height of deposits in front of the dam and the index k which reflects the shape of channel. So the amount of sediment retained behind the silt-arrester can be better estimated by using these indexes which can be easily obtained by field reconnaissance.
出处
《中国水土保持》
北大核心
1992年第4期22-25,共4页
Soil and Water Conservation in China
