水利水电技术2017，Vol.48Issue(12)：7-13,77,8.DOI:10.13928/j.cnki.wrahe.2017.12.002
大区域地下水流数值模型的多指标校正方法——以那陵格勒河冲洪积扇地下水数值模型为例
A multi-indexes calibration method for numerical model of large regional groundwater flow——a case of numerical model of groundwater flow in Nalinggele River Alluvial-proluvial Fan
摘要
Abstract
In order to improve the reliability of numerical model of large regional groundwater flow,a hydrogeological conceptual model and a 3-D mathematical model of groundwater unsteady flow are established by taking the area of Nalinggele River Alluvial-proluvial Fan as the study case,for which the hydrogeological parameters are rectified with the try out method and are maintained within the reasonable range.Afterwards,the effects of the recognition and verification of the model are evaluated from the aspects of groundwater level,spring discharge,position of overflow zone and equilibrium state of groundwater,for which only when the simulation results for all the corrected indexes are better coincided with the measured data,the calibration of the model can be passed.The model calibration result shows that the trend of the water level in the observation hole during the recognition period exhibits a better fitting and the fitting error of water level accords with the normal distribution.The spring discharge calculated from the model is 2.2 × 108 m3/a,which is within the estimated reasonable range.The fitting of the overflow zone is basically coincided with the position of the natural groundwater overflow zone in the remote sensing map.The calculated regional groundwater recharge is 7.61 × 108m3/a (in which the infiltration from river accounts for 99.58％) with the discharge of 7.07 ×108 m3/a (thespring discharge and evaporation account for 31.28％ and 36.51％ respectively).The study result has a referential value for describing the regional groundwater resources characters and the relationship of the interaction between groundwater and eco-environment.关键词
地下水数值模型/地下水资源评价/模型校正/模型可靠性/柴达木盆地/青藏高原高寒区Key words
numerical groundwater model/groundwater resources assessment/model calibration/model reliability/Qaidam Basin/alpine region of Qinghai-Tibet Plateau分类
天文与地球科学引用本文复制引用
魏忠成,杜新强,侯嘉维,黄勇..大区域地下水流数值模型的多指标校正方法——以那陵格勒河冲洪积扇地下水数值模型为例[J].水利水电技术,2017,48(12):7-13,77,8.基金项目
柴达木盆地循环经济试验区重点地区水文地质调查(121201-1121279) （121201-1121279）
