FEFLOW在地下水流模拟方面的应用

时期 的流场和长观孔的历时曲线, 识别水文地质参数、 边界值和其他均衡项, 使建立的模型能更准确地 定量描述研究区地下水系统。 4. 4　研究成果 研究表明, 1999 年研究区地下水系统总补给 量为 2. 639×109 m 3, 总排泄量 2. 656×109 m 3。浅 ·953·第 4 期 贺国平等: FEFLOW 在地下水流模拟方面的应用 © 1994-2010 China Academic Journal Electronic Publishing House. All rights reserved. http://www.cnki.net 层含水层组总补给量为 2. 622×109 m 3, 其中降水 入渗量占 47. 11% , 河渠入渗量占 22. 41% , 灌溉 回渗量占 15. 02% , 黄河侧渗补给量占 12. 86% , 总排泄量为 2. 630×109 m 3。多年平均浅层地下水 补给资源量约 2. 835×109 m 3öa; 75% 降水保证率 下, 浅层地下水资源总补给量为 2. 600× 109 m 3öa。浅层可开采资源量为 1. 941×109 m 3öa, 深 层可开采资源量为 0. 249×109 m 3öa。 傍河水源地开采条件下, 黄河侧渗增量占水 源地开采量的 65%～ 75% ; 8 个拟建水源地同时 开采时, 黄河侧渗增量占水源地开采量的 67. 34% , 水源地开采 10 年后地下水位趋于稳 定[13 ]。截渗墙埋深为 20 m 和 45 m , 模型运行一年 后, 黄河侧渗量分别较 1999 年减少了 0. 175×108 m 3 和 0. 238×108 m 3, 占黄河侧渗量的 5. 50% 和 7. 48% [14 ]。距离黄河大堤 10 km 以外, 流场基本 不受截渗墙的影响。 最近上市的 FEFLOW 5. 0, 其颜色已经不再 局限于 256 色。随着处理蒸发和断层的子程序包 的开发, FEFLOW 功能更加完善。综上所述, FEFLOW 软件能很好地处理相关的水文地质条 件, 具有简便的操作、快速精确的数值算法和先进 的图形视觉化技术等特点。随着 FEFLOW 的日 益普及, 它必将成为水文地质学上一个强有力的 数值模拟工具。 [ 参 考 文 献 ] [1 ] 丁继红, 周德亮, 马生忠. 国外地下水模拟软件的发展 现状与趋势[J ]. 勘察科学技术, 2002, (1) : 37- 42. [2 ] 孙讷正. 地下水流的数学模型和数值方法[M ]. 北京: 地质出版社, 1981. [3 ] M cDonald M G, H arbaugh A W. A M odular Th ree2 D im ensional F in ite2D ifference Groundw ater F low M odel [M ]. U S Geological Survey Open2F ile R eport 83- 875, 1988. [ 4 ] L eake S A , P rudic D E. Docum entation of a computer p rogram to sim ulate aquifer2system compaction using the modular fin ite2difference ground2w ater flow model [A ]. U S Geological Survey Open2F ile R eport [C ]. 1988. 88- 482. [ 5 ] H sieh P A , F reck leton J R. Docum entation of a computer p rogram to sim ulate horizon tal2flow barriers using the U. S. Geological Survey modular th ree2 dim ensional fin ite2difference ground2w ater flow model [A ]. U S Geological Survey Open2F ile R eport [C ]. 1993. 92- 477. [6 ] Joss C J , Baeh r A L. A n adap tation of the ground2 w ater2flow code MOD FLOW to sim ulate th ree2 dim ensional air flow in the unsaturated zone[A ]. U S Geological Survey Open2F ile R eport [C ]. 1995. 94- 533. [7 ] Boxton H T , M odica E. Patterns and rates of ground2 w ater flow on Long Island, N ew York [J ]. Ground W ater, 1992, 30 (6) : 857- 866. [ 8 ] D iersch H J. In teractive, graph ics2based fin ite elem ent sim ulation of groundw ater con tam ination p rocesses [J ]. A dv Engineering Softw are, 1992, 15: 1- 13. [ 9 ] D iersch H J. F in ite elem ent modelling of recirculating density2driven saltw ater in trusion p rocesses in groundw ater [ J ]. A dvances in W ater R esources, 1988, 11 (1) : 25- 43. [ 10 ] D iersch H J , Kolditz O , Jesse J. F in ite elem ent analysis of geo therm al circulation p rocesses in ho t dry rock fractures[J ]. Zeitsch r A ngew M ath M ech, 1989, 69 (3) : 139- 153. [ 11 ] D iersch H 2J G, M ichels I. M oving fin ite elem ent m eshes fo r sim ulating 3D transien t free surface groundw ater flow and transport p rocesses [ A ]. Computational M ethods in W ater R esources X I, V ol. 1 Computational M ethods in Subsurface F low and T ransport P roblem s [C ]. Southamp ton: Comp M ech Publ, 1996. 85- 92. [12 ] 赵云章, 邵景力, 闫震鹏, 等. 黄河水对两侧地下水补 给范围的初步研究[J ]. 人民黄河, 2003, 25 (1) : 3- 5. [ 13 ] 邵景力, 崔亚莉, 赵云章, 等. 黄河下游影响带 (河南 段) 三维地下水流数值模拟模型及其应用[J ]. 吉林 大学学报 (地球科学版) , 2003, 33 (1) : 51- 55. [ 14 ] 贺国平, 邵景力, 崔亚莉. 黄河下游截渗墙对地下水 影响的数学模型与评价 [J ]. 人民黄河, 2003, 25 (1) : 22- 23. ·063· 成都理工大学学报 (自然科学版)　　　　　　　　　　　第 30 卷 © 1994-2010 China Academic Journal Electronic Publishing House. All rights reserved. http://www.cnki.net APPL ICATION OF FEFLOW TO GROUNDWATER FLOW SIM ULATION H E Guo2p ing, SHAO J ing2li, CU I Ya2li, ZHAN G D e2qiang (S chool of W ater R esources and E nv ironm ent, China U niversity of Geosciences, B eij ing ) Abstract: Sim ulations groundw ater flow or so lute transport by using num erical sim ulation softw are is becom ing an abso lutely necessary w ay in the groundw ater research field. T he softw are of FEFLOW , w h ich is based on the fin ite2elem en t theo ry, is in troduced in detail in th is paper. A pp lication areas of FEFLOW invo lve the sim ulations of w ater quan tity, w ater quality and heat. T h is softw are p rovides data in terfaces fo r the geograph ic info rm ation system and can p roduce spatial fin ite elem en t grids autom atically. It is equipped w ith fast and p recise num eric algo rithm s to con tro l and op tim ize the so lution p rocedure, and advanced visual figures are em bodied in output results. In addition, it can deals w ith co rresponding hydrogeo logic conditionsw ell dealw ith. T he app lication of FEFLOW to the buildup of a th ree2dim ensional groundw ater sim ulation model about the influence zone of the low er Yellow R iver is illustrated. Key words: fin ite2elem en t theo ry; hydrogeo logic conditions; influence zone; sim ulation model ·163·第 4 期 贺国平等: FEFLOW 在地下水流模拟方面的应用