防灾减灾工程学报2011，Vol.31Issue(2)：180-184,195,6.
不同掘进工艺煤与瓦斯流固耦合数值模拟研究
Numerical Simulation of Fluid-solid Coupling of Gas in Coal Face under Different Tunneling Technics
摘要
Abstract
The accident of coal methane gas is always to threaten the safety in coal production. Researching the interaction law between coal and gas can prevent occurrance of accident effectively. Considering compressibility, adsorption and desorption of gas, and supposing that the gas flow in pore of coal follows Darcy low, we built up a gas-solid coupling mathematical model with consideration of blasting factors. Results solved by comsol show that coal is easily destroyed by blasting excavation than machnical excavation; contrasting to stress coupling blasting load action, coal stresses and displacements is large and coupling effects should not be neglected in mechancal mining; gas pressure changes with time increase of coal rake exposure and has a decrease trend near tunnel, it looks like a funnel distribution; the contour of displacement on top of the tunnel assumes an "O" type distribution and the maximum displacement is the centre of the "O" type distribution.关键词
掘进面/煤层/瓦斯气体/流固耦合/数值模拟Key words
excavated section/ coal rake/ gas/ fluid-solid coupling/ numerical simulation分类
矿业与冶金引用本文复制引用
梁冰,李野..不同掘进工艺煤与瓦斯流固耦合数值模拟研究[J].防灾减灾工程学报,2011,31(2):180-184,195,6.基金项目
国家973计划课题(2005CB221503-05)资助 （2005CB221503-05）
