“U+L”型通风综采工作面采空区漏风特性研究Study on air-leakage characteristics of “U +L” type ventilation in goaf of fully mechanized face
张学博;靳晓敏;
摘要(Abstract):
为了掌握"U+L"型通风综采工作面采空区的漏风规律,以某矿综采工作面为试验地点,先采用Fluent软件对综采工作面采空区的漏风流场进行了数值模拟,后结合数值模拟结果制定了综采工作面示踪气体SF6的测漏风技术方案,并现场实测了"U+L"型综采工作面采空区的漏风风流分布特征。数值模拟结果与现场实测结果十分吻合。结果表明:1)"U+L"型综采工作面全程向采空区漏风,漏风汇至滞后联络巷后经专用排瓦斯巷排出;2)"U+L"型综采工作面漏风量随联络巷距离工作面距离增大而逐渐降低;3)"U+L"型综采工作面漏风量沿工作面倾向方向(从进风至回风)呈逐渐减少趋势。
关键词(KeyWords): 安全工程;“U+L”综采面;漏风分布特征;示踪气体
基金项目(Foundation): 国家自然科学基金项目(51174079);; 教育部“长江学者和创新团队发展计划”创新团队项目(IRT1235);; 国家重点基础研究发展计划“973”项目(2012CB723103)
作者(Authors): 张学博;靳晓敏;
参考文献(References):
- [1]WU Jianming(邬剑明),XIAO Jianhong(肖建红),CHI Keyong(迟克勇).A study on air leakage regularity in highly efficient faces in shallow coal with thin base rock[J].China Coal(中国煤炭),2008,34(6):47-49.
- [2]CHEN Kaiyan(陈开岩),LI Shangguo(李尚国),ZHANG Zuohua(张作华),et al.Theoretic research related to the method of measuring air quantity by means of a tracing gas[J].Journal of China University of Mining&Technology(中国矿业大学学报),2008,37(1):10-14.
- [3]QIN Ruxiang(秦汝祥),DAI Guanglong(戴广龙),MIN Linghai(闵令海),et al.Goaf air leakage detection of Y type ventilation coal mining face based on tracing technology[J].Coal Science and Technology(煤炭科学技术),2010,38(2):35-38.
- [4]GAO Jianliang(高建良),GUO Feipeng(郭飞鹏),ZHANG Xuebo(张学博).Effects of the mining-face ventilation mode on the aircurrent field as well as the gas movement in the gob[J].Journal of Safety and Envionment(安全与环境学报),2011,11(5):168-171.
- [5]LI Zongxiang(李宗翔).Study of numerical simulation of gas emission regularity and boundary condition of the goaf in coal caving of the fully-mechanized[J].Journal of China Coal Society(煤炭学报),2002,27(2):173-178.
- [6]WU Zhongli(吴中立),LIU Xicai(刘西才),ZHAO Shihai(赵时海),et al.The gob air leakage detected by SF6tracer technique[J].Coal Science and Technology(煤炭科学技术),1983(4):6-8.
- [7]LIU Guozhong(刘国忠),LI Guohua(李国华),WANG Zhenghui(王正辉),et al.Apply of SF6tracer gas continuous release method in gob air leakage detection[J].Safety in Coal Mines(煤矿安全),2011,42(9):114-117.
- [8]HU Qianting(胡千庭),LIANG Yunpei(梁运培),LIU Jianzhong(刘见中).CFD simulation of gas flow patterns[J].Journal of China Coal Sociery(煤炭学报),2007,32(7):719-723.
- [9]YANG Ming(杨明),GAO Jiangliang(高建良),FENG Pujin(冯普金).Numerical simulation of the gas distribution in the gobs of U-type and Y-type ventilation mining working faces[J].Journal of Safety and Environment(安全与环境学报),2012,12(5):227-230.