工程科学学报2017，Vol.39Issue(7)：988-995,8.DOI:10.13374/j.issn2095-9389.2017.07.003
不同温度下无烟煤电阻率的层理效应
Effects of bedding plane on anthracite coal resistivity under different temperatures
摘要
Abstract
This study tested the current vs.voltage curves of coals with angles of 0°, 30°, 45°, 60°, and 90° between the bedding plane and the axial direction at temperatures from 0 to 95℃ using a CHI660E electrochemical workstation.The concept of the series-parallel dominant degree was put forward.Moreover, the influence mechanism and the rule of the bedding structure of anthracite coal on coal resistivity under different temperatures were analyzed and investigated using the principle of minimum potential energy and polarization charge.The results show that the resistivity of the anthracite coal exhibits a strong regularity with temperature rise.A turning point appears at 55℃ for θ of the 0° samples, whereas the other samples have a turning point at 35℃.The series-parallel dominant degree reflects the impact mechanism of the bedding structure on coal resistivity and depends on the number of key bedding surface and the start time of the current going through.The resistivity increases with the increasing θ.In addition, the anisotropy coefficient of the anthracite coal increases with the temperature rise and elevates nearly twice in the scope of 35 to 65℃.关键词
煤电阻率/层理效应/温度/串并联主导程度/各向异性系数Key words
coal resistivity/bedding effect/temperature/series-parallel dominant degree/anisotropy coefficient分类
矿业与冶金引用本文复制引用
陈立,张英华,黄志安,高玉坤,白智明..不同温度下无烟煤电阻率的层理效应[J].工程科学学报,2017,39(7):988-995,8.基金项目
国家自然科学基金资助项目(51474017) （51474017）
