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干旱区通过河流输水抬升地下水至临界生态水位以维持自然河道的生态系统,其地下水埋深及土壤含水量的估计在河流剖面上归结为考虑土壤水与地下水相互作用的二维运动边界问题.将其土壤水流分解为以垂向流为主的非饱和土壤水运动和以侧向流为主的地下水运动,并结合参数优化方法SCE-UA,发展了考虑河流输水条件下土壤水垂直运动和地下水水平流动的地下水埋深估计方法.通过对模型的河水水位、水平导水率和地表通量的敏感性试验及分析,并结合SCE-UA参数优化方法对塔里木河下游生态输水下的英苏断面地下水位进行模拟验证,结果表明该模型能比较合理地模拟地下水位变化情况.
In the arid region, groundwater is elevated to the critical ecological water level through river water conveyance to maintain the ecosystem of natural rivers. The estimation of groundwater depth and soil water content in the river profile can be attributed to the two-dimensional motion boundary problem considering the interaction between soil water and groundwater. The soil water flow was decomposed into unsaturated soil water movement mainly by vertical flow and groundwater flow mainly by lateral flow. Combined with the parameter optimization method SCE-UA, vertical soil water movement under consideration of river water conveyance was developed And groundwater level groundwater depth estimation method.Through the sensitivity test and analysis of the model water level, horizontal hydraulic conductivity and surface flux, combined with SCE-UA parameter optimization method of ecological waterlogging in the lower reaches of the Tarim River The simulation results show that this model can simulate the variation of groundwater level more reasonably.