石嘴山二矿2268综放采空区自燃危险区域划分研究  

Study on compartmentalizing danger zone of coal spontaneous combustion at 2268 working face of Shizuishan No.2 Mine

作　　者：徐精彩[1] 余锋[1] 李树刚[1] 张得矿 

机构地区：[1]西安科技学院能源科学与工程系,陕西西安710054 [2]宁夏亘元集团二矿,宁夏石嘴山753200

出　　处：《煤炭学报》2003年第3期256-259,共4页Journal of China Coal Society

基　　金：国家杰出青年基金资助项目(50125414);国家自然科学基金资助项目(10102016)

摘　　要：通过实验测定煤的自燃特性参数,由现场观测和理论分析确定综放工作面采空区浮煤、漏风和氧浓度的分布情况,根据实际条件下浮煤自燃的极限参数,将采空区划分为窒息带、氧化升温带和散热带;然后根据综放工作面实际推进速度和最短自然发火期判定出采空区自燃危险区域,并确定出保障综放工作面安全的最小推进速度为1 36m/d.由此为石嘴山二矿安全生产、自燃火灾的预测以及防灭火提供依据.The spontaneous combustion characteristic parameters are measured by the selfignition testing Based on the actual survey in the working face,the distributions of the remain coal,the intensity of air leakage and the oxygen concentration in the gob are obtained And then the three zones are determined according to the actual values of the limit parameters Finally,on the basis of the shortest selfignition term of coal and the speed of the workfing ace advancing,the spontaneous combustion hazard zone in the gob are determined and the min. safe speed of 136 m/d face advancing is evaluated Providing evidence for Shizuishan No2 Mine in safety production and forecasting of fire disaster and putting out fire.

关 键 词：煤自燃 自然发火期 采空区 窒息带 极限参数 

分 类 号：TD752.2[矿业工程—矿井通风与安全]