含水层温度-介质压缩耦合渗流分析

Aquifer Temperature-Medium Compression Coupling Seepage Analysis

针对含水层渗流特点,利用回灌资料,推导计算了含水层在重力-温度-介质压缩情况下的计算公式并进行实例分析,计算结果表明:承压含水层在温度和介质压缩驱动时水头为非线性分布,且水头分布高于重力驱动;在温度和介质压缩影响下,冬季水头分布明显低于夏季,说明在耦合温度-介质压缩时,含水层水头随温度及含水层压密而升高;夏季和冬季回灌水温度的不同,导致水的动力粘滞系数和温度差增大或减小,从而增加或减少了含水层的渗透系数和温度梯度,进而改变了含水层水头与渗流速度的分布;在进行回灌时应考虑回灌水温度对含水层渗流的影响。

For aquifer flow characteristics, the use recharge data derived to calculate the aquifer formula under the condition of Gravity- Temperature- Medium compression and case analysis. The results show that: The head of Confined Aquifer is in the non- linear distribution in the temperature and media compression driving, and the distribution of the head is higher than the gravity drive; under the influence of temperature and medium compression, winter head distribution was significantly lower than in summer. In coupling temperature- medium compression, aquifer water vary with temperature and aquifer pressure rise; In summer and winter the difference of recharge water temperature increase or decrease hydraulic conductivity and temperature gradient of the aquifer, which changed the aquifer water head and seepage velocity distribution; when injection should be considered the influence of seepage recharge water temperature on the aquifer.