基于因子分析—模糊综合法的地下水环境影响数值模拟分析

利用因子分析—模糊综合法,探索地下水环境影响的数值模拟变动情况。先构建不同岩层地下水FLAC模型,利用其观测地下水抽采深度对于水压力影响状态,进行物质累计项的计算,构建离散数值模拟框架,研究地下水标定点位压裂区域水压的变动,测算出最终的地层压强值。测定过程中地下水环境会发生改变,压强控制在120~350 kPa之间。数值模拟分析过程中,随着地层深度的增加,地下水环境会发生一定的改变,地层压强值逐渐增大;反之,地层深度减少,地下水环境地层压强值逐渐减小,对地下水的流动方向以及径流都会发生对应的影响,存在正向的变动关系。

To explore the change of numerical simulation of groundwater environmental impact by using factor analysis-fuzzy comprehensive method.First,construct the groundwater FLAC model of different strata,use it to observe the influence of the groundwater pumping depth on the water pressure,calculate the material accumulation,build a discrete numerical simulation framework,study the change of the water pressure in the fracturing area at the groundwater calibration point,and calculate the final formation pressure value.The groundwater environment will change during the determination,and the pressure will be controlled between 120-350 kPa.In the process of numerical simulation analysis,with the increase of the depth of the stratum,the groundwater environment will change to a certain extent,and the formation pressure value will gradually increase;on the contrary,the decrease of stratum depth and the gradual decrease of groundwater environment stratum pressure will have a corresponding impact on groundwater flow direction and runoff,and there is a positive change relationship.