综放工作面沿空留巷时漏风规律与通风系统优化  

Air leakage law and ventilation system optimization of fully mechanized caving face with goaf retaining

作　　者：苏利兵 SU Libing(Eerduosi Zhongbei Coal Chemical Co.,LTD,Eerduosi 017000,China)

机构地区：[1]鄂尔多斯市中北煤化工有限公司,内蒙古鄂尔多斯017000

出　　处：《技术与市场》2022年第11期111-113,共3页Technology and Market

摘　　要：为控制某煤矿采空区漏风量,避免出现采空区遗煤自燃,针对3303工作面410~520 m回采区域局部存在薄煤带,工作面推进速度较慢,采空区落煤自燃发火率增加的问题,结合工作面现场实际条件,测定工作面漏风量,同时变U型通过为Y型通风方式,经过现场实测及数值模拟,风速为2E-0.06~0.0005 m/s,O_(2)含量区域值为0.09~0.12,漏风量小。In order to control the amount of air leakage in goaf and avoid spontaneous combustion of abandoned coal in goaf,thin coal zone exists locally in 410 m to 520 m mining area of 33303 working face,the working face advances slowly,and the spontaneous combustion rate of coal in goaf increases.Combined with the actual conditions of the working face,the leakage air volume of the working face was measured,and the U-type ventilation mode was changed to Y-type ventilation mode.After field measurement and numerical simulation,the wind speed range was 2E-0.06~0.0005 m/s,and the area value of O_(2)content was 0.09~0.12,and the leakage air volume was small.

关 键 词：漏风率 薄煤带 Y型通风 通风阻力 

分 类 号：TD724[矿业工程—矿井通风与安全]