王洼二矿综放工作面煤自燃灾害防治技术  

Comprehensive Fire Prevention and Control Technology for Fully Mechanized Caving Face in Wangwa No.2 Mine

作　　者：翟小伟[1,2] 何勇军[1,2] 王凯[1,2] 李成会[1,2] 连建军 马斌 倪行[1,2] 

机构地区：[1]西安科技大学能源学院,陕西西安710054 [2]西安科技大学西部矿井开采与灾害防治教育部重点实验室,陕西西安710054 [3]宁夏王洼煤业有限公司王洼二矿,宁夏固原756005

出　　处：《煤矿安全》2016年第7期66-68,72,共4页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(51404195)

摘　　要：王洼二矿215021综放工作面在撤架回收准备阶段,进风侧采空区内遗煤发生自燃,出现了工作面CO气体浓度超限的现象,影响了工作面支架的安全撤出。结合现场实际情况和煤层赋存条件,分析CO气体浓度超限的原因并制定了治理方案。采用高位钻孔压注黄泥浆和高分子胶体为主要防灭火技术,并配合降低风量、上下端头封堵等措施,使工作面架间CO气体浓度恢复正常;回风流的CO气体浓度从最高的77×10^(-6)下降到11×10^(-6),并一直稳定维持在24×10^(-6)以下,实现对火区的有效控制,保证了工作面支架的安全撤出。In the preparation stage of withdrawing,215021 full-mechanized caving face in Wangwa No. 2 Mine appears spontaneous combustion in inlet side of goaf,and the CO gas concentration is overrun,which affects the safety withdrawing of working face support.Based on the actual situation and coal seam occurrence conditions,we analyze the overrun reasons of CO gas concentration and develop a governance program. Using the fire fighting technology of playing high drilling filled with yellow mud and polymer colloid,combined with measures of reducing the amount of wind,sealing the top and bottom,the CO gas concentration returns to normal at working face.The CO gas concentration in return current falls down to 11 × 10^-6 from the highest 77 ×10^-6,and remains under 24 ×10^-6 stably,which controls the fire effectively and ensures the safety withdrawing of the working surface support.

关 键 词：煤自燃 综放工作面 防灭火技术 高分子胶体 注浆封堵 

分 类 号：TD752.2[矿业工程—矿井通风与安全]