摘要
为研究分析不同位置下注CO_(2)、不同注CO_(2)流量及不同温度CO_(2)对防灭火的影响,选取阳煤五矿8406工作面为研究对象,在数值模拟基础上,采用Design Expert软件进行BoxBehnken试验设计,构建了采空区氧化带最大宽度在三因素、三水平条件下的二次回归响应曲面模型,并对不同条件下采空区氧化带最大宽度进行了预测与分析。结果表明:氧化带最大宽度随注CO_(2)流量增加而降低,随CO_(2)注入温度增加而增加;二次回归方程显著性判断值P<0.0001,极显著,失拟项为0.2537,不显著;当注CO_(2)位置在20~40 m,注CO_(2)流量在720~1080 m^(3)/min,注CO_(2)温度在278~288 K之间,对氧化带最大宽度一次项重要度排序为注CO_(2)流量>注CO_(2)温度>注CO_(2)位置;二次项重要度排序为注CO_(2)位置和注CO_(2)流量>注CO_(2)位置和注CO_(2)温度>注CO_(2)流量和注CO_(2)温度,且注CO_(2)位置、注CO_(2)流量和注CO_(2)温度间均无交互作用;最优参数设置为:注CO_(2)位置为30 m,注CO_(2)流量为900 m^(3)/min,注CO_(2)温度为283 K。
In order to study and analyze the impact of CO_(2)injection at different locations,different CO_(2)injection flow rates,and different temperatures on CO_(2)fire prevention,the 8406 working face of Yangmei No.5 coal mine was selected as the research object.Based on the numerical simulation research,the Design Expert software was used for the Box-Behnken test design.A quadratic regression response surface model of the maximum width of oxidation zone in goaf under three factors and three levels was constructed.The maximum width of oxidation zone in goaf was predicted and analyzed.The results show that the maximumwidth of the oxidation zone decreases with the increase of CO_(2)injection flow rate,and increases with the increase of CO_(2)injection temperature;the P value of the quadratic regression equation is less than 0.0001,which is extremely significant,and the missing fitting term is 0.2537,which is not significant.The regression equation has statistical significance;when the position of carbon dioxide injection is 20-40 m,the flow of carbon dioxide injection is 720-1080 m^(3)/min,the temperature of carbon dioxide injection is between 278-288 K,and the order of the importance of the maximum width of the oxidation zone is CO_(2)injection flow>CO_(2)injection temperature>CO_(2)injection position;the order of importance of the secondary terms is injection of carbon dioxide and position of injecting carbon dioxide>injection of carbon dioxide and position of injecting carbon dioxide temperature>injection of carbon dioxide and flow of carbon dioxide,and there is no interaction between the position of carbon dioxide injection,the flow of carbon dioxide injection,and the temperature of carbon dioxide injection.The optimal parameters are set as follows:CO_(2)injection position is 30 m,CO_(2)injection flow is 900 m^(3)·min^(-1),and CO_(2)injection temperature is 283 K.
作者
白刚
令狐建设
李耀谦
周西华
唐小煜
BAI Gang;LINGHU Jianshe;LI Yaoqian;ZHOU Xihua;TANG Xiaoyu(Huayang New Material Technology Group Co.,Ltd.,Yangquan 045000,China;College of Safety Science&Engineering,Liaoning Technical University,Fuxin 123000,China;Key Laboratory of Mine Thermo-motive Disaster and Prevention,Ministry of Education,Liaoning Technical University,Fuxin 123000,China;MCC5 Group Shanghai Corporation Limited,Shanghai 201900,China)
出处
《煤矿安全》
CAS
北大核心
2023年第3期117-122,共6页
Safety in Coal Mines
基金
国家自然科学基金资助项目(52104195)
辽宁省“兴辽英才计划”资助项目(XLYC2008021)
辽宁工程技术大学学科创新团队资助项目(LNTU20TD-29)。
关键词
煤自燃
防灭火
氧化带宽度
注CO_(2)
响应曲面法
coal spontaneous combustion
fire control
width of oxidation zone
CO_(2)injection
response surface method
