Solid-gas coupling model and numerical simulation of coal containing gas based on Comsol Multiphysic

被引：2
|
作者：
Li, Shengzhou [1 ]
Jiang, Changbao [1 ]
Yao, Junwei [1 ]
Li, Minghui [1 ]
机构：
[1] Chongqing Univ, State Key Lab Coal Mine Disaster Dynam & Control, Chongqing 400044, Peoples R China
来源：
SUSTAINABLE DEVELOPMENT OF NATURAL RESOURCES, PTS 1-3 | 2013年 / 616-618卷
关键词：
solid-gas coupling; elastoplastic; finite element; Comsol Multiphysic;
D O I：
10.4028/www.scientific.net/AMR.616-618.515
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
solid-gas coupling effect of coal containing gas is studied in order to understand the gas percolation mechanism in coal and rock. On the premise of that porosity and permeability of coal and rock are in dynamic changes and Klinkenberg effect, then seepage mechanics and elastic-plastic mechanics are considered together to established solid-gas coupling model of coal containing gas. With the given fixed solution conditions and parameters, the simulation results of mathematical model is found by the Comsol Multiphysic finite element software. Simulation results are consistent with the stress-strain law, deformation and failure modes of specimen in the experiment. Seepage law obtained in numerical simulation has same trends with experimental data. The elastoplastic solid-gas coupling model of coal containing gas can effectively describe the mechanical percolation characteristics of coal containing gas.
引用
收藏
页码：515 / 520
页数：6
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