摘要
地下水过量开采已经引起新疆博州平原区地下水位持续下降,降落漏斗逐年扩大,艾比湖湿地萎缩以及一系列环境问题。在分析平原区水文地质条件的基础上,建立了博州平原区水文地质概念模型和地下水流数学模型。进一步利用Processing Modflow建立了平原区地下水数值模拟模型,并利用地下水位长期监测资料对模型参数进行了识别验证,使模型具有较好的模拟仿真度。利用识别后的模型预测了在两种开采方案下,研究区地下水位变化情况,结果可知:在地下水均衡分析的基础上,2014年博州平原区地下水补给资源量为58775×10^4 m^3/a,若维持现状开采,地下水水位将持续下降,形成更大的降落漏斗;提出将地下水开采量减少到40000×10^4 m^3/a,可作为博州平原区适宜的地下水开采量,有助于区域地下水位得到逐渐恢复。
Excessive exploitation of groundwater has caused the continous decrease of groundwater level in the bozhou plain of Xinjiang,the expansion of descending funnel year by year,the shrinking of aibi lake wetlan and a series of environmental problems.Based on the analysis of hydrogeological conditions in the plain area,the conceptual hydrogeologicl model and mathematical model of groundwater flow in the plain area of bozhou are establish.further,the Processing Modflow was used to establish the numerical simulation model of groundwater in the plain area,and the model parameters were identified and verified with the long-term monitoring data of groundwater level,so that the model had a good simulation degree.The change of groundwater level in the area was predicted by using the identified model under the mining schemes.The results showed that:on the basis of groundwater equilibrium analysis,the amount of groundwater recharge resources in the bozhou plain arae in 2014was 58775×10^4 m^3/a.It is proposed that the amount of groundwater exploition should be reduced to 40000×10^4 m^3/a,which can be regarded as the appropriate amount of groundwater exploitation in bozhou plain area and be helpful for the gradual recovery of regional groundwater level.
作者
刘诚
LIU Cheng(Xinjiang Water Resources and Hydropower Survey and Design Institute Geological Survey Institute,Urumqi 830091,Xinjiang)
出处
《地下水》
2019年第6期21-23,共3页
Ground water
关键词
博州平原
地下水
数值模型
适宜开采量
Bozhou Plain
groundwater
Numerical model
Appropriate amount of extraction
