煤炭工程 ›› 2018, Vol. 50 ›› Issue (2): 109-112.doi: 10.11799/ce201802029

• 研究探讨 • 上一篇    下一篇

基于微观分形技术对矿区砂岩渗透参数估计研究

徐斌1,董书宁2,徐艳玲3   

  1. 1. 中国矿业大学(北京)
    2. 煤炭科学研究总院西安研究院
    3. 中国人民解放军后勤工程学院
  • 收稿日期:2017-04-06 修回日期:2017-05-31 出版日期:2018-02-20 发布日期:2018-04-23
  • 通讯作者: 徐斌 E-mail:1988haoxubin@163.com

Estimating sandstone permeability of a coal mine with microscopic fractal technology

  • Received:2017-04-06 Revised:2017-05-31 Online:2018-02-20 Published:2018-04-23

摘要: 为了获取较为准确的渗透参数,依据砂岩孔隙介质的微观分形理论,在不等径毛束管孔喉模型基础之上建立起渗透性参数与砂岩微观结构参数的函数关系|为了获取砂岩微观孔隙的相关参数,通过扫描电镜技术对砂岩样本进行扫描,并运用Imagepro plus专业图像软件对SEM图像进行统计分析|为了检验所选理论的准确性以及专业图像软件的可靠性,对唐山林南仓矿钻孔含煤区段砂岩岩芯进行取样研究,运用所选理论计算出样品的渗透率理论值以及通过室内实验测得样品的宏观渗透率,将理论值与实测值对比分析,结果表明,二者误差较小,充分验证了理论以及处理技术具有较好可靠性。

关键词: 微观分形技术, 砂岩含水层, 渗透率, 电镜扫描

Abstract: Now the breadth and precision of sandstone hydraulic parameters can’t adapt to the requirement of water yield prediction and seepage property evaluation, then the results can’t accord with the fact. In order to estimate the permeability of sandstone, an important hydrogeological parameter, a mathematical model between the macroscopic permeability and pore fractal dimension was created based on fractal theory and Unequal capillary columns model. To test the accuracy of the selected theory and the reliability of the professional image software, the macroscopic permeability of the samples on the main sandstone aquifer obtained at borehole on a coal mine in Tangshan were measured and Scanning election microscope and Imagepro Plus software were also used to get SEM image and calculate the theoretical values. By comparison, the results show the error between the theoretical value and the measured value is small and these selected methods and built models are reasonable.

中图分类号: