摘要
以大南湖矿区为研究对象,分析了F1同沉积断层两侧多煤层的煤岩、煤质特征,并探讨了F1断层对成煤环境的影响。结果表明,F1正断层以南(即下盘)各煤层具有类脂组含量高、水分高、灰分产率高、挥发分高、氢含量高、灰成分指数高、沾污指数低等特点,而断层以北(即上盘)各煤层垂向演化波动强、变化快;反映出断层两侧不同的成煤环境特征,断层以北(即上盘)水体相对较深,偏还原环境,受物源影响小,但震动频次多、震动剧烈;断层以南(下盘)偏氧化环境,受物源影响较大,但沉降相对稳定。研究结果一方面反映出了断层对煤岩煤质特征及成煤环境的影响,另一方面也佐证了该断层的同沉积属性。
Taking the Dananhu mine area as the research object,the coal petrology and coal quality characteristics of several coal seams on both sides of the F1 synsedimentary fault were analyzed,and the influence of the F1 fault on the coal-forming environment was discussed.The results show that the coal seams south of the F1 normal fault(i.e.,footwall)have the characteristics by high lipid content,high moisture,high ash yield,high volatile content,high hydrogen content,high ash composition index,and low ash fouling index,while the vertical evolution of each coal seam north of the fault(i.e.,hanging wall)fluctuates strongly and changes frequently.This reflects the different characteristics of coal-forming environments on both sides of the fault.The water to the hanging wall is relatively deep,partial to the reductive environment,and less influenced by terrigenous sources,but with more frequent and intense vibrations.The footwall is partial to the oxidative environment,and more influenced by terrigenous sources,but the subsidence is relatively stable.The results reflect the influence of the fault on the coal quality characteristics and coal-forming environment of the coal rock,and on the other hand,it also supports the homosedimentary properties of the fault.
作者
樊君平
梁开华
鲁楠
周丽丽
李东慧
黄春慧
陈昊
FAN Junping;LIANG Kaihua;LU Nan;ZHOU Lii;LI Donghui;HUANG Chunhui;CHEN Hao(National Energy Group Guoyuan Power Co.,Ltd.,Beijing 100033;Shandong Coalfield Geological Survey and Research Institute,Ji'nan,Shandong 250104;Engineering Technology Research Center on Coal Resources Informatization of Shandong Province,Ji'nan,Shandong 250104)
出处
《中国煤炭地质》
2023年第6期30-37,共8页
Coal Geology of China
基金
山东省煤田地质局山东省煤田地质局重点科研专项(鲁煤地科字(2022)16号)“基于多煤层精细勘查的西北侏罗系煤炭资源空间异质性研究”。
关键词
同沉积断层
煤质
成煤环境
大南湖矿区
synsedimentary fault
coal quality
coal-forming environments
Dananhu mine area
