基于FLUENT的采空区流场数值模拟  

Namerical Simulation of flow Field in Goof Based on FLUENT

作　　者：任伟[1] 赵耀江[1] 冯子芳[1] 

机构地区：[1]太原理工大学安全工程系,山西太原030024

出　　处：《煤矿安全》2013年第6期26-29,共4页Safety in Coal Mines

摘　　要：研究使用FLUENT进行采空区数值模拟多孔介质渗透率确定方法时,引入通风阻力定律验证所建三维模型。分别从x、y、z 3个方向总结分析采空区垮落煤岩体碎胀系数,确定采空区孔隙率和渗透率三维连续分布函数。将采场空间作为一个与采空区渗透系数不同的多孔介质区域,建立更加准确的工作面—采空区连续流场数学模型。引入通风阻力特性,对比数值模拟与现场实测压差、风量验证所建阻力系数模型。以沙曲矿14204综采工作面为背景,结合现场实测参数进行数值模拟验证,结果表明该模型是可靠有效的。：The determination method of porous medium permeability in the goaf is studied by FLUENT numerical simulation, and the built three - dimensional model is verified through the introduction of ventilation resistance laws. The paper summarizes and analyzes the hulking coefficient of coal and rock collapsed from the x, y, z three directions respectively, and the three dimensional continuous distribution functions of the goaf permeability and porosity is determined. It takes the stope space as a porous zone that has a different permeability, and it builds a more accurate working face--the goaf continuous flow field mathematical model. The paper introduces the ventilation resistance characteristic, and compares the numerical simulation with the resistance coefficient model based on the field test differential pressures and air quantity. The study is based on the Shaqu Mine 14204 fully mechanized working face, and combines with the field test data to make the numerical simulation validation. The results show that the model is effective and reliable.

关 键 词：采空区 数值模拟 渗透率 FLUENT 多孔介质 通风阻力 孔隙率 采场空间 

分 类 号：TD728[矿业工程—矿井通风与安全]