摘要
为明确魏家地煤矿东1104运输顺槽掘进工作面动力现象的成因及特征,为类似复杂地质条件下矿井掘进安全提供参考,基于现场监测数据及地质资料,对事故进行系统分析。东1104运输顺槽地质构造复杂、应力环境恶劣,邻近多采空区且受多条逆断层影响,煤层厚度变化大且松软破碎。2025年12月15日中班,工作面迎头空顶修面作业时发生冒顶压出事故,T1甲烷传感器峰值浓度达42.56%。通过对事故经过、动力现象特征及影响因素的分析,认定事故直接原因包括复杂应力叠加、煤层厚度异常增厚、构造挤压作用、应力卸荷不充分及超前支护不及时,瓦斯异常涌出源于冒落煤体及周边卸荷煤体的瓦斯解吸。研究结果表明,该事故为冒顶压出引发瓦斯异常涌出的动力现象。该研究为矿井在复杂地质区域掘进安全防控提供了理论依据和实践指导。
In order to clarify the causes and characteristics of the dynamic phenomenon in the east 1104 transport roadway heading face of Weijiadi Coal Mine,and to provide reference for the safety of mine excavation under similar complex geological conditions,the accident was systematically analyzed based on the field monitoring data and geological data.The geological structure of the east 1104 transport trough is complex and the stress environment is harsh.It is adjacent to many goafs and is affected by multiple reverse faults.The thickness of the coal seam varies greatly and is soft and broken.On December 15,2025,in the middle shift,a roof fall and extrusion accident occurred during the face-to-face work of the working face,and the peak concentration of the T1 methane sensor reached 42.56%.Through the analysis of the accident process,dynamic phenomenon characteristics and influencing factors,it is determined that the direct causes of the accident include complex stress superposition,abnormal thickening of coal seam thickness,tectonic extrusion,insufficient stress unloading and untimely advance support.The abnormal gas emission is derived from the gas desorption of the caving coal body and the surrounding unloading coal body.The research results show that the accident is a dynamic phenomenon of abnormal gas emission caused by roof caving,which provides theoretical basis and practical guidance for the safety prevention and control of mine excavation in complex geological areas.
作者
寇德瑞
朱亚娟
金辰睿
苗在全
李文忠
Kou Derui;Zhu Yajuan;Jin Chenrui;Miao Zaiquan;Li Wenzhong(Lanzhou Coal Mine Design and Research Institute Co.,Ltd.,Lanzhou 730000,China;Lanzhou Petrochemical Vocational and Technical University,Lanzhou 730060,China;Weijiadi Coal Mine Branch of Jingmei Energy Co.,Ltd.,Pingchuan 30900,China)
出处
《煤炭与化工》
2026年第3期31-35,共5页
Coal and Chemical Industry
关键词
工作面
瓦斯超限
动力现象
构造
冒顶
支护
working face
gas overrun
dynamic phenomenon
structure
roof fall
supporting
