›› 2016, Vol. 37 ›› Issue (11): 3175-3183.doi: 10.16285/j.rsm.2016.11.017

• 基础理论与实验研究 • 上一篇    下一篇

多空隙组合地质单元渗流理论分析与试验

夏 伟1, 2,符文熹1, 2,赵 敏3,周 勇3   

  1. 1.四川大学 水利水电学院,四川 成都 610065;2.四川大学 水力学与山区河流保护国家重点实验室,四川 成都 610065; 3.核工业西南勘察设计研究院有限公司,四川 成都 610066
  • 收稿日期:2015-12-29 出版日期:2016-11-11 发布日期:2018-06-09
  • 通讯作者: 符文熹,男,1972年生,博士,教授,博士生导师,主要从事工程地质、水文地质和岩土工程领域的教学和研究工作。E-mail:wxf_lee@scu.edu.cn E-mail:13438982670@163.com
  • 作者简介:夏伟,男,1992年生,博士研究生,主要从事岩石力学与工程的研究工作。
  • 基金资助:

    国家重点基础研究发展规划项目(973计划)(No. 2015CB057903);四川省科技计划专项(No. 2014SS027)。

Theoretical analysis and experiment for the seepage of a combinational fractured-vuggy-porous geological media

XIA Wei1, 2, FU Wen-xi1, 2, ZHAO Min3, ZHOU Yong3   

  1. 1. College of Water Resources & Hydropower, Sichuan University, Chengdu, Sichuan 610065, China; 2. State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, Sichuan 610065, China; 3. Nuclear Industry Southwest Survey & Design Institute Co. Ltd., Chengdu, Sichuan 610066, China
  • Received:2015-12-29 Online:2016-11-11 Published:2018-06-09
  • Supported by:

    This work was supported by the National Basic Research Program of China (973 Program) (2014SS027) and the Science and Technology Plan of Sichuan Province (2014SS027).

摘要: 岩体通常是以孔隙岩石为基质并包含各种成因的裂隙和溶隙的复杂多空隙组合地质材料。为研究孔隙-裂隙-溶隙多空隙组合介质的渗流特性,在简要介绍多孔介质渗流Darcy定律、平板窄缝流Poiseuille定律和圆形管道流Darcy-Weibach理论的基础上,分析了几种孔隙-裂隙-溶隙组合情况的多空隙介质渗流特性,推导出相应组合的等效渗透系数KE,给出了描述多空隙组合介质KE的一般表达式,讨论了影响各种空隙组合KE的主要因素。以普通砖模拟岩石基质,通过砖身钻孔填充及砖间缝隙填充,试验模拟了岩溶岩体和裂隙岩体中溶孔和裂隙填充后的渗透情况。试验结果与所推求理论公式计算出的KE在同一量级且误差很小,很好地验证了所推导的多空隙组合介质渗透系数表达式的有效性。

关键词: 多空隙组合介质, Darcy渗流, 裂隙流, 管道流, 等效渗透系数

Abstract: Rock mass exists often with a combined fractured-vuggy-porous void in nature. This work focused primarily on the seepage behaviour of a combined fractured-vuggy-porous geological media. On the basis of brief analysis for the Darcy’s law applied to the porous media, the Poiseuille’s law suitable for the fracture flow and the Darcy-Weibach theory used in the pipe flow, this paper derived the equivalent seepage coefficient KE which could describe the seepage nature of different combinations of fractured-vuggy-porous voids in geological medium and analyze the main factors for different combinations. In addition, laboratory seepage tests were used for two combinations to validate the theoretical equations derived, and available porous brick was chosen to simulate the rock matrix during testing. Comparison of the values of KE obtained from testing and computing respectively shows that KE is in the same order of magnitude and the error is very small as well.

Key words: fractured-vuggy-porous media, Darcy flow, fracture flow, pipe flow, equivalent seepage coefficient

中图分类号: 

  • TV 139.11

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