特殊条件下综采放顶煤工作面防灭火技术  

Fire Prevention Technology of Fully-mechanized Caving Coal Face Under Special Conditions

作　　者：孙祺钰 SUN Qiyu(Daliuta Coal Mine,National Energy Investment Group Shendong Coal Group Co.,Ltd.,Yulin 719515,China)

机构地区：[1]国家能源集团神东煤炭集团有限责任公司大柳塔煤矿,陕西榆林719315

出　　处：《煤矿安全》2019年第1期71-74,共4页Safety in Coal Mines

摘　　要：大柳塔煤矿活鸡兔井复合区南翼12煤属于I类易自燃煤层,最短自然发火期为45 d,复合区上分层回采结束年限较早,在没有形成人工假顶的条件下采用放顶煤开采工艺回采下分层,下分层备采工作面长期停放且上部存在大范围采空区,防灭火形式尤为严峻。鉴于此,对复合区煤层易于自燃的危险因素进行了分析,采取了以日常火灾预测预报为前提,以降风降压、封堵漏风、灌注黄泥浆、注氮气为日常防灭火技术手段的综合防灭火技术措施,采空区气体控制在正常水平范围内,实现了复合区2个工作面的安全回采。The 12#coal in southern wing compound area of Daliuta Coal Mine Huojitu Well is spontaneous combustion coal seam,the shortest spontaneous ignition period is 45 days, and the end of the stratified stoping in the zone is early. In the absence of artificial roof, the mining process of top coal mining is adopted, for that reason, in the lower layer, the working face is long parked and the upper part has a large area of goaf, so, the form of fire fighting is particularly severe. In view of this, the risk factors of spontaneous combustion of coal seams in the composite area are analyzed, and comprehensive fire prevention measures based on daily fire prediction and prediction are adopted, including reducing wind and pressure, blocking air leakage, pouring yellow mud and injecting nitrogen. The gas control in goaf is within the normal level range, and the safe stoping of two working faces in compound area is realized.

关 键 词：厚煤层 复合采空区 漏风 煤自燃 防灭火 

分 类 号：TD752.2[矿业工程—矿井通风与安全]