摘要
当前象山煤矿主采的3号与5号煤层瓦斯地质条件复杂,瓦斯赋存不清晰,给新工作面和新采区瓦斯防治带来很大困难。为此开展3号与5号煤层瓦斯赋存主控因素的研究,通过数据回归分析得,3号、5号煤层瓦斯含量与煤层厚度及埋深之间近似为一次线性正相关关系,3号、5号煤层厚度约占瓦斯含量变化原因的10%、16%,3号、5号煤层埋深约占瓦斯含量变化原因的45%、20%;与顶板砂质泥岩厚度之间近似为一次线性负相关关系,3号和5号煤层顶板10 m内的砂质泥岩厚度均占瓦斯含量变化原因的42%,具有较大的相关性。通过灰色关联分析,得到3号与5号煤层地质构造的关联度分别为0.689和0.761,埋深关联度分别为0.682和0.762,地质构造和埋藏深是3号、5号煤层的瓦斯赋存主控因素。
The current geological conditions of gas in the 3#and 5#coal seams of Xiangshan Mine are complex,and the occurrence of gas is unclear,which brings great difficulties to the engineering background of gas prevention and control in new working faces and new mining areas.We conduct a study on the main controlling factors of gas occurrence in coal seams 3#and 5#.Through data regression analysis,it is found that the gas content in coal seams 3#and 5#is approximately linearly positively correlated with coal seam thickness and burial depth.The thickness of coal seams 3#and 5#accounts for about 10%and 16%of the reasons for gas content changes,while the burial depth of coal seams 3#and 5#accounts for about 45%and 20%of the reasons for gas content changes;There is an approximate linear negative correlation between the thickness of sandy mudstone and the roof.The thickness of sandy mudstone within 10 meters of the roof of coal seams 3#and 5#accounts for 42%of the reason for the change in gas content,indicating a significant correlation.Through grey correlation analysis,it was found that the correlation degrees between the geological structures of the 3#and 5#coal seams were 0.689 and 0.761,respectively,and the correlation degrees of burial depth were 0.682 and 0.762,respectively.Geological structures and burial depth are the main controlling factors for gas occurrence in the 3#and 5#coal seams.
作者
陈卫东
邹帅
邹云龙
敬昌国
邓敢博
CHEN Weidong;ZOU Shuai;ZOU Yunlong;JING Changguo;DENG Ganbo(Xiangshan Mine,Shaanxi Shanmei Hancheng Mining Co.,Ltd.,Weinan 715400,China;Rescue Branch,CCTEG Chongqing Research Institute Co.,Ltd.,Chongqing 400700,China)
出处
《陕西煤炭》
2025年第5期56-61,共6页
Shaanxi Coal
基金
国家重点研发计划基金项目资助(编号:2023YFC3011604)
中煤科工集团重庆研究院有限公司集团面上项目项目资助(编号:2023-TD-MS017)
中煤科工集团重庆研究院有限公司院自立创新引导项目项目资助(编号:2023YBXM25)。
关键词
瓦斯含量
煤层厚度
顶板砂质泥岩厚度
煤层埋深
地质构造
gas content
coal seam thickness
roof sandy mudstone thickness
coal seam burial depth
geologic structure
