一、研究概况 在多泥沙河流上修建水库,随着泥沙淤积的发展,将减少水库有效库容,并造成水轮机和泄流建筑物的磨损,影响水库的效益和电站的安全运行,造成经济上的损失。为了保持电站门前清、减少粗沙过机,防止坝前闸门淤堵,国内有关单位从理论,模型试验及原型观测等方面,对泄流排沙建筑物孔前冲刷漏斗形态进行过不少的分析研究。 万兆惠等收集了三门峡等近十座水库深水孔口门前局部水下地形资料及一些模型试验的资料,通过分析得出进水口前漏斗顺水及侧向坡度: I. Research Overview The construction of reservoirs on sediment-laden rivers will reduce the effective reservoir capacity of reservoirs and cause the abrasion of turbines and drainage structures, affecting the efficiency of reservoirs and the safe operation of power plants, resulting in economic On the loss. In order to keep the front of the power plant clean, reduce coarse cross-over machine to prevent clogging of the gate before the dam, the relevant domestic units from the theory, model tests and prototype observation, etc., on the discharge of sediment flushing funnel form a lot of holes before Analysis and Research. Wan Zhaowei and other collected Sanmenxia and other nearly 10 reservoir deepwater orifice in front of the local underwater topography data and some model tests data obtained by analysis of the inlet before the funnel along the water and lateral slope: