一、引言人们对水库淤积现象和防淤方法曾进行过多次研究,水库淤积常常在不到一代人的生活期间不知不觉地淤死。必须造得比没有淤积现象更高的大坝,因而造价也更高。然而,灌溉水库从社会、经济和政治利益出发,通常要求保证水库能无限期地使 I. INTRODUCTION Many studies have been conducted on the phenomena of siltation and anti-siltation in reservoirs. Reservoir siltation often silly death unconsciously during the life of less than one generation. Dams must be made to be taller than silt-free and therefore cost more. However, irrigated reservoirs, starting from social, economic and political interests, usually require that reservoirs be indefinitely