首页    编委会    编辑部    历任主编    获奖信息    征稿简则    友情链接    English    旧版主页
  在线期刊
       最新录用
       当期目次
       过刊浏览

  下载专区
       版权协议
       征稿范文
       来稿登记表
       录用证明

  联系我们

投稿e-mail: jbnuns_sub@bnu.edu.cn

主编e-mail: jbnuns_eic@bnu.edu.cn

办公地点:北京师范大学 科技楼A区216,218,220室

电话:(010)58807851,58802050,58807872,58807713

通信处:北京市海淀区新街口外大街19号北京师范大学理科学报编辑部

邮政编码:100875

办公室e-mail: jbnuns@bnu.edu.cn

本网站暂不提供全文下载,如需全文下载请点击

中国知网

 

标题

裂隙岩体渗流及污染物迁移模型的数值模拟研究

作者

王笑雨 张可霓 李 毅

机构

北京师范大学水科学研究院,北京师范大学地下水污染控制与修复教育部工程研究中心

摘要

裂隙岩体的非均质性使得其渗流问题与传统多孔介质渗流存在本质差别.目前流行的裂隙渗流模型包括:离 散裂隙网格模型;双重连续介质模型;等效连续介质模型.介绍上述方法优劣,并以中国东部某岛屿为基础,基于等效连 续介质法,建立三维渗流模型以及污染物迁移模型.数值模拟结果显示,污染物被岩体的吸附程度对污染物运移影响巨 大;降水入渗量增多会使得水流速度增快,却不会显著提升污染物运移至边界的时间,反而由于其增大了污染物向四周 扩散的趋势,致使较少污染物迁移至边界;距断层较近的污染源不仅会导致污染物迅速迁移至边界甚至地表,并且质量 分数显著提升.

关键词

裂隙;等效连续介质法;数值模拟;污染物迁移

引用

王笑雨, 张可霓, 李 毅. 裂隙岩体渗流及污染物迁移模型的数值模拟研究[J]. 北京师范大学学报(自然科学版),2015,51(5):527-532.

基金

能源科技发展项目专项基金资助项目(NY20111102-1)

分类号

X146

DOI

10.16360/j.cnki.jbnuns.2015.05.016

Title

Modeling fluid flow and tracer transport in fractured rock by the effective continuum method

Author

WANG Xiaoyu, ZHANG Keni, LI Yi

Affiliations

College of Water Sciences, Engineering Research Centre of Groundwater Pollution Control and Remediation of Ministry of Education, Beijing Normal University

Abstract

Flow transport in fracture media is different from that in porous media due to anisotropy of fracture rocks. Available methods for treatment of fracture media include discrete fracture and matrix model, dual-continua method, and effective continuum method. Advantages and disadvantages of these methods are presented, and modeling studies for fluid flow and tracer transport in a field site with fractured rock are performed. The site of study is a small island in eastern China. A steady-state flow field with current climate condition is simulated using a simplified conceptual model of the flow system, which submits to mass conservation and Darcy’s Law. Result of the steady-state flow field is then used in further tracer transport simulations. It is found that adsorption is the most significant factor of transport. With higher infiltration, the tracer tends to reach the boundary with lower concentration. Because higher the infiltration, broader the tracer spreads. Accidentally injecting tracer near the fracture area may cause serious pollution. Tracer will quickly spread along the fault with boarder plume and higher concentration. In addition, a portion of the tracer will reach the surface. Therefore, it is necessary to pay close attention to water near faults.

Key words

fracture; effective continuum method;numerical simulation;tracer transport

cite

WANG Xiaoyu, ZHANG Keni, LI Yi. Modeling fluid flow and tracer transport in fractured rock by the effective continuum method [J]. Journal of Beijing Normal University(Natural Science),2015,51(5):527-532.

DOI

10.16360/j.cnki.jbnuns.2015.05.016

Copyright © 2014 Journal of Beijing Normal University (Natural Science)
Designed by Mr. Sun Chumin. Email: cmsun@mail.bnu.edu.cn