计算物理 ›› 1999, Vol. 16 ›› Issue (1): 54-58.

• 论文 • 上一篇    下一篇

覆岩破坏直流电场特征数值计算

程久龙1, 刘斌2, 于师建1, 徐世浙2, 朱鲁1   

  1. 1. 山东矿业学院, 271019;
    2. 青岛海洋大学, 266003
  • 收稿日期:1997-10-16 修回日期:1998-09-17 出版日期:1999-01-25 发布日期:1999-01-25
  • 作者简介:程久龙,男,33,副教授,硕士
  • 基金资助:
    国家自然科学基金资助课题

The numerical calculation of direct current field character of overburden failure

Cheng Jiulong1, Liu bin2, Yu Shijian1, Xu Shizhe2, Zhu Lu1   

  1. 1. Shandong institute of mining and technology, 271019;
    2. Qingdao university of oceanography, 266003
  • Received:1997-10-16 Revised:1998-09-17 Online:1999-01-25 Published:1999-01-25

摘要: 覆岩破坏引起稳态电场特征发生变化,其主要变化的电性参数是电阻率。通过建立煤层开采前后覆岩电性参数变化的数学模型,利用二维有限单元法进行覆岩破坏前后电阻率分布的数值模拟。计算结果表明:电阻率的变化主要由覆岩破坏后产生裂隙带和冒落带的岩石电性特征变化引起,从而为利用电阻率法监测覆岩破坏奠定了理论基础

关键词: 覆岩破坏, 电场特征, 电阻率, 有限元法

Abstract: The overburden failure causes the changes of the constant electric field,and the resistivity is the main parameter in these changes.2D finite element method (FEM) is used to simulate the resistivity distribution of overburden by building the mathematics models of the overburden electrical parameter changes.The calculation indicates that the resistivity varies with the electrical character of the rock in cracked zone and caving zone caused by overburden failure,and the resistivity method used in monitoring the overburden failure is practical in principle.

Key words: overburden failure, electric field character, resistivity, the finite element method (FEM)

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