济南泉域岩溶水数值预报与供水保泉对策

Numerical Prediction for the Karst Groundwater and Spring Protection in Jinan Karst Spring Region

基于保持泉水长期连续壮观喷涌和泉域岩溶生态地质环境良性循环发展等约束条件,根据济南泉域岩溶地下水系统特征,采用MODFLOW模拟裂隙岩溶介质地下水运动规律,进行了回灌补源条件下的地下水、地表水联合调蓄模拟,结果表明趵突泉枯水期水位控制在27.6m以上,四大泉群能够保证长年喷涌,同时在西郊增大开采量,提出济南泉域允许开采量不超过39万m3/d是泉域生态地质环境功能修复的前提。提出了回灌补源、水质供水、控制城市向直接补给区扩展和优化水资源配置等泉水保护建议。

Based on the restriction of spring spewing constantly all the year round and constructing an optimum eco-environmental with coordination, according to the characteristic of Jinan Karst groundwater system, the regularity of fissure-karst water movement is simulated with MODFLOW. The simulation results sugget that controlling the water level highter than 27.6 m and the allowable yield of groundwater is not more than 39 × 10^4 m^3/d, the spring can spew all the time. At last, the paper gives the suggestion on spring protection, such as groundwater recharge, water supply according as water quality, controling suburb expanding and optimizing distribution of water field et al.