Response matrix method in determining the volume of groundwater exploitation in Zhongmu Country

摘要

It's of great significance to analysis the relationship between the perspective of industrial layout and the water level from managing groundwater for the national food security, sustainable development. This study can determine the amount of groundwater exploitation by Response matrix method, which including numerical simulation, optimization of management, risk assessment. Numerical simulation on the target area is carried out by Visual Modflow, helping obtaining object function of maxim ground water produced quantity, standards of minimum ground water level for the crops. Optimization in the case is solved by Matlab. This optimization defines the address selection in the case of risk indicator, produced quantity, rainfall, evaporation capacity, and recharge evaluate. It make clearly: in observation hole fitting between actual observation and simulation level. There are nodes 74.3% margin of error of less than 0.1m, 18.5% is 0.1～0.2m, only 7.2% is greater than 0.2m, which basically meet the requirements of simulation; Liuji town is the top in produced quantity with 24.32×104m3/a, an ideal site for factories in need of large amount of water. It suggests that if ground water in Liuji town is exploited in accordance with the optimization, the risk indicator is 0.62, a medium one.