Processing Modflow模型在预测地面沉降中的应用  

Application of Processing Modflow Model in Prediction of Ground Subsidence

作　　者：阚京梁[1] 罗立红[2] 

机构地区：[1]铁道第三勘察设计院集团有限公司,天津300251 [2]天津市环境地质研究所,天津300191

出　　处：《铁道工程学报》2010年第2期27-31,共5页Journal of Railway Engineering Society

摘　　要：研究目的:针对开采地下水引起的区域地面沉降对线性工程的影响问题,以京津城际铁路为例,采用地下水三维渗流与地面沉降耦合模型计算软件—Processing Modflow,选择沿线地面沉降较严重区段,建立区域地下水流场与地面沉降的耦合模型,运用参数修正后的模型,进行地面沉降预测。研究结论:利用实测地面沉降值对模型进行验证,沉降中心位置及沉降量的模拟结果与实测结果基本吻合;设计不同的地下水开采方案,利用模型预测地面沉降,结果表明:合理压采地下水可以降低地面沉降量及沉降坡度,减缓地面沉降的不均匀性。Research purposes： Taking Beijing -Tianjin Intercity Railway as an example, this paper studies the impact of the regional ground subsidence caused by pumping up underground water on the linear project. Using the three - dimensional calculation software - Processing Modflow for groundwater seepage and ground subsidence coupled model, the coupled model for regional groundwater flow field and ground subsidence is established for the chosen area along railway, where the regional ground subsidence is serious. The modified model is applied to predict the regional ground subsidence. Research conclusions： With the measured values, the model is verified. The simulation results of subsidence center and settlement value are basically consistent with the real measured results. The model is applied to predict the ground subsidence with the different schemes of pumping up the underground water. The predicted results show that proper pumping up the groundwater can reduce the regional ground subsidence volume, the subsidence gradient and the unevenness of the ground subsidence.

关 键 词：PROCESSING MODFLOW 区域地面沉降 线性工程 耦合模型 沉降预测 

分 类 号：R642.26[医药卫生—外科学]