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Tóth(1963)在复杂盆地给定上边界水头条件下,推演出多级次地下水流系统.运用此方法探讨水流模式,改变盆地介质或盆地深度等条件,盆地水均衡会同步发生变化;同时,给定上边界水头也固化了盆地的势源与势汇的位置与数目,这与实际条件不相符合,也限制了地下水流模式的转化研究.在总结实验条件下多级水流系统特征的基础上,提出了通量上边界的地下水流系统模拟方法(简称CUG-GWFS方法),并进行了水流系统数值模拟.结果表明:(1)在多个可能势汇的盆地中,可以发育5种地下水流模式,即:简单区域水流系统(RS)、局部+区域两级嵌套水流系统(LS+RS)、局部+中间+区域三级嵌套水流系统(LS+MS+RS)、局部+中间两级嵌套水流系统(LS+MS)和简单局部水流系统(LS).(2)盆地地下水流模式受盆地入渗强度、介质条件、盆地长度与深度比值,以及盆地可能势汇的多少与位置的影响.(3)保持其他条件不变,单独加大盆地入渗强度比Ric,或加大盆地长深比Rld,盆地水流模式按照上述5种模式呈现有序转化.
Tóth (1963) deduced multi-level groundwater flow system given the upper boundary head in complex basins. Using this method to explore the flow pattern and change the conditions of basin medium or basin depth, the basin water balance will change synchronously. At the same time, Given that the head of the upper boundary also solidifies the position and number of potential sources and potential sinks in the basin, this does not accord with the actual conditions and also limits the conversion of groundwater flow patterns.After summarizing the characteristics of multistage flow system under the experimental conditions (CUG-GWFS method) is proposed, and the numerical simulation of water flow system is carried out. The results show that: (1) There are five kinds of groundwater flow in the basin (LS + RS), LS + MS + RS (partial + middle + region), local + (LS + MS) and simple local flow system (LS). (2) The groundwater flow pattern in the basin is affected by the infiltration intensity, media conditions, the ratio of basin length to depth, and the potential sinks in the basin And the impact of location. (3) Paul Other things being equal, than alone increased infiltration basin Ric strength, or increase the length basin deeper than RId, rendering the water basin ordered pattern conversion according to the above five modes.