|本期目录/Table of Contents|

[1]林峰,荣浩宇.不同瓦斯压力和孔隙率的原煤电阻率和渗透率变化规律研究[J].中国安全生产科学技术,2017,13(4):5-9.[doi:10.11731/j.issn.1673-193x.2017.04.001]
 LIN Feng,RONG Haoyu.Study on variation laws of resistivity and permeability for raw coal with different gas pressure and porosity[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2017,13(4):5-9.[doi:10.11731/j.issn.1673-193x.2017.04.001]
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不同瓦斯压力和孔隙率的原煤电阻率和渗透率变化规律研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
13
期数:
2017年4期
页码:
5-9
栏目:
学术论著
出版日期:
2017-04-30

文章信息/Info

Title:
Study on variation laws of resistivity and permeability for raw coal with different gas pressure and porosity
文章编号:
1673-193X(2017)-04-0005-05
作者:
林峰12荣浩宇12
1.安徽理工大学 深部煤矿采动响应与灾害防控安徽省重点实验室,安徽 淮南 232001;2.安徽理工大学 能源与安全学院,安徽 淮南 232001
Author(s):
LIN Feng12 RONG Haoyu12
1. Anhui Province Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mine, Anhui University of Science and Technology, Huainan Anhui 232001, China;2. School of Resource and Safety Engineering, Anhui University of Science and Technology, Huainan Anhui 232001, China
关键词:
瓦斯压力孔隙率电阻率渗透率
Keywords:
pressure porosity resistivity permeability
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2017.04.001
文献标志码:
A
摘要:
为了解不同瓦斯压力和孔隙率下原煤的电阻率和渗透率变化及电阻率和渗透率的响应规律,以淮南矿区谢一矿51采区C15煤层煤体为研究对象,研究不同瓦斯压力和孔隙率下煤样三轴压缩全过程的电阻率与渗透率的变化规律。研究结果表明:孔隙率相同时,最小电阻率和最小渗透率随着瓦斯压力的增大先增加后减小,瓦斯压力在4 MPa时,最小渗透率基本为0;瓦斯压力相同时,最小电阻率和最小渗透率随着孔隙率的增大而增大;全应力应变过程电阻率和渗透率满足随应变的增大先减小后增大的规律,不同加载阶段电阻率变化和渗透率变化规律保持一致,渗透率变化幅度比-应变曲线拐点滞后于电阻率变化幅度比-应变曲线;可利用电阻率变化规律反映应力变化以及渗透率变化情况。
Abstract:
In order to understand the variation of resistivity and permeability for raw coal under different gas pressure and porosity and the corresponding response laws of resistivity and permeability, taking the coal body of C15 coal seam in 51 mining area of Xieyi mine in Huainan mine area as the research object, the variation laws of resistivity and permeability for coal samples in the whole process of triaxial compression under different gas pressure and porosity were studied. The results showed that the minimum resistivity and the minimum permeability increased first and then decreased with the increase of gas pressure Cthe porosity was same, and the minimum permeability was 0 basically with the gas pressure at 4 MPa. The minimum resistivity and the minimum permeability increased with the increase of porosity when the gas pressure was same. The resistivity and permeability in the complete stress-strain process decreased with the increase of strain, and the variation laws of resistivity and permeability in different loading stages were consistent. The inflection point in the variation amplitude ratio-strain curve of permeability lagged behind that of resistivity. The variation laws of resistivity can reflect the variation of stress and permeability.

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备注/Memo

备注/Memo:
国家自然科学基金项目(U1361208)
更新日期/Last Update: 2017-05-11