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为突出渗透系数K、给水度μ对计算误差的影响,本文结合一无蒸发(地下水埋深超过10米)水源地进行分析。该水源地为潜水含水层,共有268眼开采井,剖分成43个三角形单元,内外节点各15个,均为第一类边界。为排除入渗干扰,而选用无降水入渗期和无灌溉期的数据进行计算分析,并用逐步回归法和自动优选法反求参数,其结果令人满意。一、参数对计算误差的影响1.参数影响计算误差的因素K、μ对计算误差的影响与下述因素有关:(1)区内均衡状况——当区内入渗量(包括井灌量)大于排泄量(开采量、溢出量、蒸发量之和)时,在导水系数T较均匀的情况下,地下水流向界外,使区内水位呈
In order to highlight the influence of permeability coefficient K and water supply μ on calculation error, this paper analyzes a water source without evaporation (groundwater depth more than 10 meters). The water source for the submersible aquifer, a total of 268 wells, divided into 43 triangular units, internal and external nodes of 15, are the first type of border. In order to exclude the infiltration interference, the data of no-infiltration infiltration period and no-irrigation period were selected for calculation and analysis, and stepwise regression method and automatic optimization method were used to inverse the parameters. The result was satisfactory. First, the parameters of the impact of calculation error 1. Parameters affect the calculation of error factors K, μ on the calculation of the error and the following factors: (1) the balance of the region - when the infiltration within the area (including well irrigation) If the water discharge coefficient is larger than the amount of discharge (the sum of the amount of extraction, the amount of spillage and the amount of evaporation), the groundwater flows outside the boundary with the water transfer coefficient T being more uniform,