Comprehensive prevention and control technology of coal spontaneous combustion in compound goaf of close distance coal seam
-
摘要: 我国近距离煤层赋存比重大，开采时多个采空区易连通形成复合采空区。复合采空区面积大、漏风区域多、遗煤分布范围广，煤自燃灾害极为严重。针对某矿复合采空区煤自燃迅速发展、CO和C2H4大量涌出的异常情况，综合分析了复合采空区漏风源、漏风汇、地质构造、回采期间丢煤情况及煤自燃气体涌出特征等因素，确定了复合采空区煤自燃高温隐患的分布范围及发展状态，制定了隐患应急控制与隐患高效治理的“两步走”综合治理方案，采取均压与喷浆结合减少漏风、注氮惰化采空区等措施达到隐患应急控制的效果，在此基础上，划分出治理煤自燃隐患的有效措施区域，采用复合泥浆封堵、液态CO2冷却降温、三相泡沫覆盖隔氧技术实现隐患高效治理目标，构建了“堵漏控风-惰化降温-覆盖隔氧”三位一体的复合采空区煤自燃综合防治技术体系。应用上述技术后，复合采空区内C2H4体积分数由72.1×10-6降低至0，CO体积分数由3 912.6×10-6下降至20×10-6以下并保持稳定，有效消除了该矿复合采空区煤自燃高温隐患，保障了邻近工作面的安全高效开采。Abstract: In China, the occurrence of close distance coal seams accounts for a large proportion, and multiple goaf areas are easily connected to form compound goaf during mining. The compound goaf area is large. There are many air leakage areas and wide distribution range of residual coal, leading to the extremely serious coal spontaneous combustion disaster in compound goaf. In view of the rapid development of coal spontaneous combustion and the abnormal situation of CO and C2H4 pouring out from the compound goaf during the mining, this study comprehensively analyzes the factors such as air leakage source, air leakage sink, geological structure, residual coal during mining and characteristics of spontaneous combustion gas emission of coal, and determines the distribution range and development state of high temperature hidden danger of coal spontaneous combustion in compound goaf. The "two-step" comprehensive control plan for emergency control of hidden dangers and efficient management of hidden dangers is formulated. The combination of pressure equalization and leak plugging to reduce air leakage and nitrogen injection to dilute oxygen in goaf are adopted to achieve the effect of emergency control of hidden dangers. On this basis, effective measure areas of coal spontaneous combustion prevention and control are divided, and compound mud plugging, liquid CO2 cooling and three-phase foam covering oxygen isolation technology are adopted to achieve the goal of highly efficient control of hidden danger. The three-in-one comprehensive prevention and control technology system of "plugging and control velocity-inerting and cooling-covering and oxygen isolation" is constructed to completely eliminate the hidden danger of high temperature in compound goaf. After applying the above techniques, the volume fraction of C2H4 and CO in the compound goaf decreased from 72.1×10-6 and 3 912.6×10-6 to 0 and bellow 20×10-6 respectively. The results show that the proposed technology effectively eliminates the hidden danger of high temperature spontaneous combustion of coal in compound goaf and guarantees the safe and efficient mining of adjacent working face.
-
-
期刊类型引用(14)
1. 郑肖，蒋磊，朱挺，刘亚强. 基于人工智能的企业项目云数据自动化共享系统. 电子设计工程. 2025(05): 59-64 . 
百度学术
2. 谭章禄，王美君，叶紫涵. 智能化煤矿数据治理方法论体系与实施框架. 煤炭科学技术. 2025(01): 284-295 . 百度学术
3. 陈铁华，王晓敏，李红霞. 区块链赋能视角下煤矿生产安全监管演化博弈研究. 煤炭技术. 2024(01): 269-272 . 百度学术
4. 黎亦凡，郭一鸣，高琦，欧晓勇，姜帆. 基于密文属性加密的发变组故障录波数据访问控制方法研究. 电子器件. 2024(05): 1355-1361 . 百度学术
5. 赵建文，孟旭辉. 数字孪生在煤矿电网中的应用研究. 工矿自动化. 2023(02): 38-46 . 本站查看
6. 喻燕华. 基于RBAC模型的网络安全访问控制系统. 信息与电脑(理论版). 2023(03): 120-122 . 百度学术
7. 刘秉峰，韩智伟. 基于区块链的医院数据库安全访问控制方法. 现代信息科技. 2023(08): 48-50 . 百度学术
8. 李蕾，孙歆. 基于角色划分的多源异构数据库安全访问控制. 自动化与仪器仪表. 2023(05): 56-59+64 . 百度学术
9. 李忠奎，吴文臻，王乐军，张子良. 基于边缘计算的煤矿安全监控分站设计研究. 煤炭技术. 2023(12): 241-245 . 百度学术
10. 王爱兵. 社区矫正系统用户隐私信息安全保护技术. 数字技术与应用. 2023(12): 225-227 . 百度学术
11. 霍跃华，赵法起，吴文昊. 多特征融合的煤矿网络加密恶意流量检测方法. 工矿自动化. 2022(07): 142-148 . 本站查看
12. 沈斌，焦玉良，何洪涛，陈业青. 基于区块链金融的政府采购融资平台设计与实现. 武汉工程大学学报. 2022(04): 439-444 . 百度学术
13. 张立亚，李晨鑫，刘斌，姜玉峰. 矿山物联网区块链机制研究. 工矿自动化. 2022(08): 10-15 . 本站查看
14. 王彦. 基于区块链的数据访问控制方法研究. 信息与电脑(理论版). 2022(23): 19-21 . 百度学术
其他类型引用(3)
计量
- 文章访问数: 145
- HTML全文浏览量: 41
- PDF下载量: 31
- 被引次数: 17
下载:
