摘要
通过实测资料对 1974年以来三门峡库区溯源冲刷和沿程冲刷进行了分析 ,指出了溯源冲刷的范围 ,初步研究了溯源冲刷的发展过程及其与入库流量、坝前水位和河床条件等之间的关系 ,并对沿程冲刷及其与水沙的关系进行分析 ,明确了大流量时沿程冲刷和溯源冲刷是水库冲刷的主要形式 ,是增大水库排沙的主要途径。
Based on the observed data since 1974, retrogressive and progressive erosion in Sanmenxia Reservoir is firstly analyzed and the extension of retrogressive erosion is discussed. The relations between developing process of retrogressive erosion and incoming water,water level at dam site and bed condition are then studied, respectively. Besides,the relation between progressive erosion and incoming water and sediment condition is analyzed. It is pointed out that in time of occurrence of large incoming water, retrogressive and progressive erosion is the main form of reservoir scouring and the main way to increase reservoir sediment discharging.
出处
《泥沙研究》
CSCD
北大核心
2002年第3期9-13,共5页
Journal of Sediment Research
基金
"九五"国家重点科技攻关项目 (98 92 8 0 2 0 1)
