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为分析白石水库泥沙淤积影响因子并准确计算各因子的影响程度,定性分析了白石水库水沙情况,获取了泥沙淤积的主要影响因子;再依据2001～2008年白石水库水沙资料,采用偏最小二乘法建立模型,定量计算各影响因子对水库泥沙淤积的影响程度,采用灰色关联度法验证了计算结果。结果表明,影响白石水库泥沙淤积的主要因子及其影响程度为平均流量35.26%、汛期降水量30.66%、入库水量15.31%、出库水量12.52%、平均输沙率3.55%、最大流量2.65%和平均含沙量0.05%。
In order to analyze the influencing factors of sediment deposition in Baishi Reservoir and calculate accurately the influence degree of each factor, the sediment and sediment conditions in Baishi Reservoir are qualitatively analyzed, and the main influencing factors of sediment deposition are obtained. Based on the data of water and sediment of Baishi Reservoir from 2001 to 2008, Partial least-squares method was used to establish a model to quantitatively calculate the impact of various influencing factors on reservoir sedimentation. The gray correlation method was used to verify the calculation results. The results show that the main factors affecting the sedimentation of Baishi Reservoir are 35.26% of the average flow rate, 30.66% of precipitation in flood season, 15.31% of inflow water volume, 12.52% of outflow water volume, average sediment transport rate of 3.55% and maximum flow rate of 2.65 % And average sediment concentration of 0.05%.