黑龙江科技大学学报2017，Vol.27Issue(1)：17-21,5.DOI:10.3969/j.issn.2095-7262.2017.01.004
含瓦斯煤岩体固-气-热耦合数值分析
Numerical research into solid-gas-thermal coupling of coal and rock containing gas
摘要
Abstract
The increased mining depth gives a special prominence to the research into the characteristic and law underlying the multi-factor coupling interaction in coal and rock.The study involves performing numerical calculation, combined with the development of the multiple physical field coupling mathematical model of coal and rock containing gas and using COMSOL software;establishing the physical model by setting certain physical parameters and boundary conditions;and thereby delving further into multiple physical field coupling.The result demonstrates that the a sharp increase occurs in gas concentration in the working face the moment coal wall is exposed, followed by a slow drop over time;an increase in gas pressure following the an increased load is explained by a drop in porosity and permeability due to the increased load;and in the coal and rock of high gas pressure and low permeability, the gas pressure gradient rise is most likely to occur near the excavation surface, contributing to the occurrence of coal and gas outburst.关键词
含瓦斯煤岩体/多场耦合/动力灾害/COMSOL数值模拟Key words
coal and rock containing gas/multiple physical field coupling/dynamic disaster/COMSOL numer ical simulation分类
矿业与冶金引用本文复制引用
李涛,张俊文,金珠鹏..含瓦斯煤岩体固-气-热耦合数值分析[J].黑龙江科技大学学报,2017,27(1):17-21,5.基金项目
国家自然科学基金项目(51604100 （）
51474099) （）
黑龙江省自然科学基金项目(E2015031) （E2015031）
哈尔滨市科技局科技创新人才专项(2016RQQXJ116) （2016RQQXJ116）
