含硫炭质页岩隧道弃渣自燃机理分析及防治研究  

Analysis and Prevention Research on Slag Spontaneous Combustion Mechanism of Sulfur Containing Carbonaceous Shale Tunnel

作　　者：张晓刚 

机构地区：[1]中铁二十局集团第二工程有限公司,北京100000

出　　处：《铁道建筑技术》2017年第2期120-123,共4页Railway Construction Technology

基　　金：中铁二十局集团专项科研基金(20140010238)

摘　　要：文章通过取样分析、现场勘察,得出燕子洞弃渣场自燃的本质是含硫铁矿的含炭质页岩在长时间破碎堆积以后低温氧化升温造成的,并且在自燃的不同阶段黄铁矿和热风压均起到了重要的助燃作用。根据现场情况和理论结果,有针对性地采取了"降温-灭火-封堵"的灌浆+覆土综合防灭火措施,取得了较好的效果,对类似问题具有一定的借鉴意义。Through the site survey and sampling analysis,the nature of the spontaneous combustion of Yanzi Cave spoil area,is the carbonaceous shale which contains sulfur iron ore oxidation in long time accumulation caused by heating. And in different stages of the spontaneous combustion,the pyrite and hot wind pressure have played an important role in the combustion. According to the situation and theoretical results,a comprehensive measure of ＂cooling-extinguishing-plugging＂is adopted,which is a good way to prevent and extinguish fire. It can be served as a reference for similar problems.

关 键 词：弃渣场 自燃 硫铁矿 热风压 降温-灭火-封堵 

分 类 号：X705[环境科学与工程—环境工程]