|
|
|
| Numerical Simulation of Flow Field and Gas Distribution in Goaf Based on Caving Zone Division |
| JIANG Yi-feng, LI Zhi-lei, XU Tun |
| School of Resoure and Safty Engineering, China University of Mining and Technology(Beijing), Beijing 100083,China |
|
|
|
|
Abstract Based on coal seam mining caving distribution characteristics, combined with the overburden rock mining fissure "O" type circle theory, the mined-out area partition, the physical model was established. Based on the characteristics of goaf porous media in different areas, the average hulking coefficient, permeability, porosity, and the partition set parameters in the fluent software were analyzed, simulation analysis of goaf flow field and gas distribution characteristics were made.
|
|
|
|
|
|
| [ 1 ] 李树刚. 综放面采空区岩体碎胀特性分析[ J ] . 陕西煤炭技术,1996(4):19 - 21.[ 2 ] 马其华. 长壁采场覆岩“O”型圈空间结构及相关矿山压力研究[ D ]. 青岛:山东科技大学资源与环境工程学院,2005.[ 3 ] 钱鸣高,石平五. 矿山压力与岩层控制[ M ]. 徐州:中国矿业大学出版社,2003:69 - 70.[ 4 ] 刘泽功,袁 亮,戴广龙,等.开采煤层顶板环形裂隙圈内走向长钻孔抽放瓦斯研究[ J ]. 中国工程科学,2004,6(5):32 - 35.[ 5 ] 李树刚,石平五,钱鸣高. 覆岩采动裂隙椭抛带动态分布特征研究[ J ]. 矿山压力与顶板管理,1999,16(Z1):44 - 46.[ 6 ] 冯普金. Y型通风回采工作面采空区流场和瓦斯分布规律研究[ D ]. 焦作:河南理工大学,2012.[ 7 ] 林海飞,李树刚,成连华,等.覆岩采动裂隙带动态演化模型的实验分析[ J ].采矿与安全工程学报,2011,28(2):298 - 303.[ 8 ] 金龙哲, 姚 伟, 张 君. 采空区瓦斯渗流规律的CFD模拟[ J ]. 煤炭学报,2010,35(9):1446 - 1480.[ 9 ] 杨 明, 高建良,冯普金. U型和Y型通风采空区瓦斯分布数值模拟[ J ]. 安全与环境学报,2012,12(5).[ 10 ] 于 勇,张俊明,姜连田. FLUENT入门与进阶教程[ M ]. 北京:北京理工大学出版社,2008. |
|
|
|