自燃煤层沿空留巷采空区遗煤自燃规律及防控技术研究  

Study on Law and Prevention and Control Technology of Goaf Residual Coal Spontaneous Combustion of Gob-side Entry Retaining in Combustible Coal Seam

作　　者：张广杰[1] 芦晓伟 王文[3] ZHANG Guangjie;LU Xiaowei;WANG Wen(Henan Industrial Technology Research Institute Co.,Ltd.,Henan Polytechnic University,Jiaozuo 454003,China;School of Safety Engineering,China University of Mining and Technology,Xuzhou 221116,China;School of Energy Science and Engineering,Henan Polytechnic University,Jiaozuo 454003,China)

机构地区：[1]河南理工大学、河南理工产业技术研究院有限公司,河南焦作454003 [2]中国矿业大学安全工程学院,江苏徐州221116 [3]河南理工大学能源科学与工程学院,河南焦作454003

出　　处：《煤炭技术》2023年第4期108-113,共6页Coal Technology

基　　金：国家自然科学基金项目(51604093);河南省科技攻关项目(212102310603)。

摘　　要：针对沿空留巷情况下采空区遗煤易自燃、发火等问题,以平煤二矿为研究背景,根据沿空留巷采空区特征及工作面通风方式特点,建立采空区自然发火数学模型。对未留巷、留巷未采取防漏风措施及留巷采取措施等情况下采空区自然发火特征进行数值模拟,并在现场进行了工业性试验。研究结果表明:采用沿空留巷技术后增加了采空区漏风量,氧气浓度面积增加,致使采空区内温度升高;依据沿空留巷下采空区自然发火模拟分析,认为在沿空巷道采取漏风措施可降低采空区遗煤自然发火危险性;建立沿空留巷分级防控防灭火技术体系,并在现场进行了应用。为类似条件下沿空留巷采空区遗煤自燃防治提供参考。In view of the problems of spontaneous combustion and ignition of the remaining coal in the goaf under the condition of gob side entry retaining,taking Pingmei No.2 coal mine as the research background,a mathematical model of spontaneous combustion in the goaf is established based on the characteristics of the goaf and the ventilation mode of the working face.The characteristics of spontaneous combustion in goaf without retaining roadway,without taking measures to prevent air leakage and retaining roadway were simulated,and industrial tests were carried out on site.The results show that the air leakage in the goaf is increased and the range of oxygen concentration is enlarged,which results in the temperature rise in the goaf.According to the numerical simulation of the spontaneous combustion in the goaf under the goaf,it is considered that the measures of air leakage in the goaf can reduce the risk of spontaneous combustion in the goaf.The technical system of classified prevention,control and fire-fighting for the goaf is established and applied in the field.It provides a reference for the prevention and control of the spontaneous combustion of the remaining coal in the goaf under similar conditions.

关 键 词：沿空留巷 采空区遗煤 数值模拟 自然发火 

分 类 号：TD752[矿业工程—矿井通风与安全]