综放工作面瓦斯运移影响因素优化的数值模拟  

Numerical Simulation of Influential Factors Optimization of Gas Migration at Fully Mechanized Caving Face

作　　者：常宸铭[1] 岳小栋[2] 范彦明 

机构地区：[1]晋城煤业集团宏圣矿建安装公司,山西晋城048000 [2]中国矿业大学安全工程学院,江苏徐州221116

出　　处：《煤矿安全》2014年第3期5-7,12,共4页Safety in Coal Mines

摘　　要：提出了运用正交试验设计的方法来考察综放工作面推进速度、配风量和上隅角抽风量这3个影响因素对采空区瓦斯浓度分布的影响。数值模拟和正交试验分析表明工作面推进速度对相对瓦斯涌出量的影响最大,其次是上隅角抽风机抽风量,而配风量的影响最小。当工作面产量为5 900 t/d、配风量为2 600 m3/min、回风上隅角抽风量为330 m3/min时,工作面相对瓦斯涌出量最小,且瓦斯浓度不超限。实测数据与数值模拟结果较吻合,表明运用Fluent软件可以用来确定3个影响因素的最优组合。Orthogonal test design was proposed to investigate the impact of advance speed, air distribution volume and upper comer in- duced draft quantity on gas concentration distribution. The results of numerical simulation and orthogonal test showed that the largest impact on relative gas emission at caving face was advance speed, followed by upper comer induced draft volume, and air distribution volume is the smallest influential factor. The minimum relative gas emission at caving face occurred when advancement speed, air dis- tribution volume, upper comer induced draft quantity was 5 900 t/d, 2 600 m3/min and 330 m3/min, respectively. Combining ob- served data with numerical simulation results, the results indicate that it is feasible to apply Fluent software to get the optimal combina- tion of the three factors at fully mechanized caving face.

关 键 词：正交试验 推进速度 配风量 上隅角抽风量 上隅角瓦斯 

分 类 号：TD712[矿业工程—矿井通风与安全]