U型综采工作面采空区流场数值模拟  

Numerical Simulation of Goaf Flow Field for U- type Fully Mechanized Working Face

作　　者：陶远[1] 秦汝祥[1,2] 庞文华[1] 

机构地区：[1]安徽理工大学能源与安全学院,安徽淮南232001 [2]安徽理工大学煤矿安全高效开采省部共建教育部重点实验室,安徽淮南232001

出　　处：《煤矿安全》2014年第1期186-188,191,共4页Safety in Coal Mines

摘　　要：为得到U型综采工作面采空区的流场分布，根据11124工作面实际情况建立了采空区二维物理模型，利用FLUENT软件及自适应网格加密技术对所建模型进行数值模拟研究。模拟得到的工作面风速分布与实测数据基本吻合，从而验证了数值模拟结果的合理性。研究表明：工作面向采空区漏风主要发生0～20m范围内，漏入采空区的风量在此区域内有部分返回工作面，而大部分漏风量在工作面倾向140～160m返回工作面；采空区风速等值线在倾向方向上并不对称；在采空区走向方向，漏风风速呈逐渐减小趋势。In order to obtain goaf flow field distribution in U - type fully mechanized mining face, the study established a two - dimen- sional goaf physical model according to the actual situation of 11124 working face, FLUENT software and adaptive mesh refinement techniques is used to study the model. Simulated working surface airflow field distribution agrees with the measured data, which veri- fied the reasonableness of the numerical simulation result. The simulative results show that the main air leakage district of eoalface is within the range 0 to 20 m, and some air flow backs to the eoalface in this district, but most of the air flow baeks to the eoalface within 140 to 160 m. The goaf wind eontours are not symmetrieal in the gradient direction; in the strike direction of the goaf, the air flow ve- locity is decreasing gradually.

关 键 词：U型通风 采空区 风流流场 数值模拟 漏风 

分 类 号：TD722[矿业工程—矿井通风与安全]