基于采空区热源的工作面风温变化规律及控制  

Variation Law and Control of Air Temperature in Working Face Based on Heat Source in Goaf

作　　者：郭传清 陶维国 掌奕然 赵绪帅 陈修杰 苗德俊[2,3] GUO Chuanqing;TAO Weiguo;ZHANG Yiran;ZHAO Xushuai;CHEN Xiujie;MIAO Dejun(Jining No.2 Coal Mine,Yankuang Energy Group Company Limited,Jining 272000,China;College of Safety and Environmental Engineering,Shandong University of Science and Technology,Qingdao 266590,China;Cultivation Base of State Key Laboratory of Intelligent Control and Green Mining of Rock Strata,Shandong University of Science and Technology,Qingdao 266590,China)

机构地区：[1]兖矿能源集团股份有限公司济宁二号煤矿,山东济宁272000 [2]山东科技大学安全与环境工程学院,山东青岛266590 [3]山东科技大学矿山岩层智能控制与绿色开采国家重点实验室,山东青岛266590

出　　处：《煤炭技术》2024年第5期184-190,共7页Coal Technology

基　　金：山东省自然科学基金资助项目(ZR2020QE137)。

摘　　要：针对采空区高温热源漏风携热及机电设备影响工作面温度的问题,以济宁二号矿3302工作面为例,采用数值分析方法,建立了工作面物理模型,研究了基于采空区热源下工作面风流温度的变化情况,分析了不同热源位置、供风量对工作面温度场的影响规律,依据附面层理论及模拟云图,确定了最佳挡风帘尺寸。通过现场实测,布置20 m+10 m风帘的阻隔效果最佳,布置后工作面风温降低2.3℃,能够有效防治采空区内高温热源携热漏风。Aiming at the problem of air leakage and heat transfer from high temperature heat sources in the goaf and the influence of electromechanical equipment on the temperature of the working face,taking the 3302 working face of Jining No.2 coal mine as an example,a physical model of the working face was established using numerical analysis methods.The variation of air flow temperature in the working face under multiple heat sources was studied,and the influence of different heat source locations and air supply volumes on the temperature field of the working face was analyzed.Based on the boundary layer theory and simulated cloud charts,the optimal size of the wind shield was determined.According to field measurement,arranging a 20 m+10 m wind shield has the best blocking effect.After the arrangement,the air temperature of the working face will be reduced by 2.3℃,which can effectively prevent high-temperature heat sources from carrying heat and air leakage in the goaf.

关 键 词：采空区热源 工作面温度 数值模拟 采空区漏风 挡风帘 

分 类 号：TD727[矿业工程—矿井通风与安全]