改进遗传算法在泾惠渠灌区水文地质参数求解中的应用

The Application of Improved Genetic Algorithm for Hydrogeology Parameters Solution in Jinghui Irrigation Area

水文地质参数是地下水水量计算和含水层富水性评价的重要依据。利用改进遗传算法,利用实测水位恢复资料求取泾惠渠灌区水文地质参数,并通过地下水流数值模拟进行参数验证。结果表明,改进遗传算法比传统配线法获得的参数值更加精确。因而,作为一种全局最优化的方法,改进遗传算法具有简单、快捷的特点,其计算效率高、无人为干扰,能够快速搜索到可行性解,可广泛用于水文地质参数的求解。

Hydrogeology parameters are important evidences for calculating the quantity of groundwater and assessing the abundance of water in aquifers. In this paper, improved genetic algorithm is induced to solve the hydrogeological parameter of Jinghui Irrigated Area with the measured water recovery data, and the parameter is verified through the groundwater flow numerical simulation. The results show that improved genetic algorithm is more accurate than the conventional match method. Therefore, as a global optimiza- tion method, improved genetic algorithm is simple and quick for operation, it also has characteristics like good adaptability and high efficiency on parameters solution and can be widely used for hydrogeology parameters solution.