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颗粒直径对破碎石灰岩渗透特性影响的实验研究

发表时间:2012-02-15  浏览量:1186  下载量:500
全部作者: 赵玉成,刘命元,左其伟
作者单位: 中国矿业大学力学与建筑工程学院
摘 要: 基于中国矿业大学深部岩土力学和地下工程国家重点实验室的MTS815岩石力学伺服实验系统,通过室内模拟环境,选取不同粒径的石灰岩进行了多组全面的渗流试验,研究了非Darcy渗流的渗透特性。给出破碎岩体的介质粒径和渗流速度对渗透系数的具体影响趋势:在一定的轴压作用下,随着颗粒直径的逐渐变大,不同岩石的渗透率逐渐增大;不同颗粒直径的岩石都有类似的压实渗透特性,随着岩石压力的逐渐增大,其厚度被逐渐压缩,渗透率逐渐变小。
关 键 词: 岩体力学与土力学;石灰岩;渗透特性;Darcy流;颗粒直径
Title: Experimental research on effect of particle diameter on broken limestone seepage characteristic
Author: ZHAO Yucheng, LIU Mingyuan, ZUO Qiwei
Organization: School of Mechanics & Civil Engineering, China University of Mining & Technology
Abstract: Based on the MTS815 rock mechanics servo experiment system of State Key Laboratory for Geomechanics & Deep Underground Engineering of China University of Mining & Technology, through the indoor simulated environment, many groups of comprehensive transfusion experiments of the selected limestone with different particle sizes were carried on, and the non-Darcy transfusion seepage characteristic was studied. The concrete influence tendencies are given between the medium particle size and the seepage velocity of the broken rock mass and the penetration coefficient: under certain axis presses, with particle diameter�s gradual fill-out, the penetration coefficient increases gradually; the rock with different particle diameters has the similar compaction seepage characteristic, with the rock pressure increasing gradually, its thickness reduces gradually, the penetration coefficient decreases gradually.
Key words: rock mechanics and soil mechanics; limestone; permeability; Darcy�s law; particle diameter
发表期数: 2012年2月第3期
引用格式: 赵玉成,刘命元,左其伟. 颗粒直径对破碎石灰岩渗透特性影响的实验研究[J]. 中国科技论文在线精品论文,2012,5(3):237-242.
 
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