东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2007, Vol. 28 ›› Issue (2): 258-261.DOI: -

• 论著 • 上一篇    下一篇

不同孔隙配比人工岩芯试件水力学试验研究

于庆磊;杨天鸿;唐春安;L.G.Tham;   

  1. 东北大学资源与土木工程学院;东北大学资源与土木工程学院;东北大学资源与土木工程学院;香港大学土木工程系 辽宁沈阳110004;辽宁沈阳110004;中国科学院岩土力学研究所;湖北武汉430071;辽宁沈阳110004;香港999077
  • 收稿日期:2013-06-24 修回日期:2013-06-24 出版日期:2007-02-15 发布日期:2013-06-24
  • 通讯作者: Yu, Q.-L.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金重大资助项目(50490274);;

Hydraulic testing study on artificial specimens with different pore proportioning

Yu, Qing-Lei (1); Yang, Tian-Hong (1); Tang, Chun-An (1); Tham, L.G. (3)   

  1. (1) School of Resources and Civil Engineering, Northeastern University, Shenyang 110004, China; (2) Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; (3) Department of Civil and Structural Engineering, Hong Kong University, Hong Kong, Hong Kong
  • Received:2013-06-24 Revised:2013-06-24 Online:2007-02-15 Published:2013-06-24
  • Contact: Yu, Q.-L.
  • About author:-
  • Supported by:
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摘要： 应用电液伺服岩石力学试验系统,研究了不同孔隙配比的人工岩芯试件的应力应变渗流特性,比较系统地分析了孔隙分布配级、孔隙度、渗流作用对强度、刚度的影响.试验得到了孔隙配比、孔隙度与初始渗透性的关系,建立了水压和孔隙度对试件强度弱化的关系方程,对于定量描述孔隙结构与渗流率、试样强度的关系,具有一定的参考价值.试验结果表明,粗颗粒比例和大孔径孔隙对孔隙度和渗透性影响较大,随着孔隙度增加,水对试件的强度弱化程度更加显著.

关键词: 试验研究, 人工试件, 孔隙配比, 孔隙结构, 渗透率

Abstract: The stress-strain-permeability behavior of artificial specimens with different pore proportioning was investigated electrohydraulically by servo-controlled MTS 815 rock test system. The influences of pore proportioning, porosity and seepage on rigidity and peak strength of artificial specimens were systematically studied by comparing testing results. The relationship between pore proportioning, porosity and permeability was thus obtained to set up an equation expressing how the hydraulic pressure and porosity weaken the rigidity and peak strength of artificial specimens. A reference was therefore provided to describe quantitatively the relationship between rock's porosity, permeability and peak strength. Experimental results showed that the coarse particles in proportioning and macro pore affect obviously the porosity and initial permeability and water weakens the rigidity and strength of specimens more significantly with increasing porosity.

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