响应面法优化综放面上隅角瓦斯治理参数  

Optimization of Upper Corner Gas Control Parameters of Fully Mechanized Caving Face by Response Surface Method

作　　者：丁洋 谭军红[1] 林海飞 宜艳 朱冰[1] 陈文彬 DING Yang;TAN Junhong;LIN Haifei;YI Yan;ZHU Bing;CHEN Wenbin(School of Safety Science and Engineering,Xi'an University of Science and Technology,Xi'an 710054,China;Key Laboratory of Western Mine Exploitation and Hazard Prevention,Ministry of Education,Xi'an University of Science and Technology,Xi'an 710054,China)

机构地区：[1]西安科技大学安全科学与工程学院,西安710054 [2]西安科技大学西部矿井开采及灾害防治教育部重点实验室,西安710054

出　　处：《煤炭技术》2023年第10期119-123,共5页Coal Technology

基　　金：国家自然科学基金面上项目(52074217)。

摘　　要：为综合考虑煤矿开采的安全性和经济性,探究风量、高抽巷抽采负压以及工作面两端头错距3个因素对综放面上隅角瓦斯浓度的交互作用,基于响应面法设计模拟方案,运用COMSOL对模型在上述3个因素变化下综放工作面瓦斯的分布情况进行数值模拟,根据模拟结果对上隅角瓦斯浓度进行多因素回归分析,得出上隅角瓦斯浓度最低时的各因素最优参考值,最后进行了现场验证。结果表明:各单因素对上隅角瓦斯浓度影响程度大小排序为高抽巷抽采负压>错距>风量;错距和高抽巷抽采负压的交互作用对上隅角瓦斯浓度的影响最为显著,风量和高抽巷抽采负压交互作用次之,风量和错距交互作用最小;当试验工作面错距为-2.22 m,高抽巷抽采负压为17.37 kPa,风量为1 045.45 m^(3)/min时,上隅角瓦斯浓度最低,优化参数后现场上隅角瓦斯浓度明显降低,矿井实现了安全高效生产。In order to comprehensively consider the safety and economy of coal mining, explore the interaction of three factors, namely air volume, negative pressure of high extraction roadway and the staggered distance between two ends of working face, on the corner gas concentration of fully mechanized caving face, design a simulation scheme based on response surface method, and use COMSOL to numerically simulate the gas distribution of fully mechanized caving face under the changes of the above three factors. According to the simulation results, the multi-factor regression analysis of the gas concentration in the upper corner was carried out, and the optimal reference value of each factor was obtained when the gas concentration in the upper corner was the lowest. Finally, the field verification was carried out. The results show that the order of influence degree of each single factor on gas concentration in upper corner is as follows: negative pressure in high extraction roadway >staggered distance>air volume;the interaction between staggered distance and negative pressure in high extraction roadway has the most significant effect on gas concentration in upper corner, followed by the interaction between air volume and negative pressure in high extraction roadway, and the interaction between air volume and staggered distance has the least effect. When the staggered distance of the test working face is-2.22 m, the negative pressure of the high extraction roadway is 17.37 kPa and the air volume is 1 045.45 m^(3)/min, the gas concentration in the upper corner is the lowest. After optimizing the parameters, the gas concentration in the upper corner on site is significantly reduced, and the mine achieves safe and efficient production.

关 键 词：上隅角瓦斯 响应面法 风量 错距 高抽巷抽采负压 

分 类 号：TD712[矿业工程—矿井通风与安全]