煤矿安全2018，Vol.49Issue(1)：29-32,4.DOI:10.13347/j.cnki.mkaq.2018.01.008
热应力作用下有效应力对原煤渗透特性的影响
Influence of Effective Stress on Seepage Characteristics of Coal Under Thermal Stress
摘要
Abstract
In order to investigate the influence of effective stress on permeability of the coal based on thermal stress,seepage tests of triaxial loading under different stress states,different gas pressure and different temperature conditions were carried out by the self-made "thermo-fluid-solid coupling with triaxial-servo controlled seepage equipment system of coal and rock".The results show that:under three kinds of stress states,the coal permeability decreased with the increasing of temperature.But the decreasing rate of permeability reduced gradually with the increasing of temperature;the crack growth of coal and rock was inhibited by the confining pressure and axial pressure,so that the rate of permeability decreased gradually;according to the relationship between permeability and effective stress under the thermal stress,the calculation results are in good agreement with the experimental results,which can well reflect the permeability of coal samples.关键词
渗透率/温度/热应力/有效应力/瓦斯压力/原煤渗透特性Key words
permeability/temperature/thermal stress/effective stress/gas pressure/seepage characteristics of coal分类
矿业与冶金引用本文复制引用
段守德,赵宏刚,李彦志..热应力作用下有效应力对原煤渗透特性的影响[J].煤矿安全,2018,49(1):29-32,4.基金项目
重庆市研究生科研创新资助项目(CYS16012) （CYS16012）
