摘要
豫西新安煤田煤层厚度及其变化对煤与瓦斯突出具有控制作用。采用统计、沉积环境和构造分析相结合的方法,研究了煤田内煤层厚度变化规律及成因。研究表明：新安煤田煤层厚度大（平均3.87 m）,且煤厚变化大,煤层变异系数0.87,可采指数0.85,两个相邻的最薄与最厚煤厚点间的距离为25~185 m。煤层平均厚度主要受成煤初期基底不平和成煤期后古河流冲蚀作用控制;煤厚变化主要受顺层剪切滑动构造作用控制。根据煤厚变化规律和成因,可对局部煤厚变化进行预测。
Variation of coal seam thickness of Xin＇an coalfield in western Henan has effect on coal and gas outburst.In combination with statistical analysis,sedimentary environment analysis and structural analysis,the paper studied the regularities and causes of variation of coal seam thickness.The results show that the thickness of coal seam is mainly controlled by the initial substrate and the ancient river erosion in coal-forming period as well as gliding structure.According to the regularities and the causes of coal seam thickness variation,it is possible to predict coal seam thickness variation locally,coal seam,but difficult to predict coal seam thickness variation regionally.
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
2011年第4期13-15,19,共4页
Coal Geology & Exploration
基金
中国煤炭协会科学技术研究指导性计划项目(MTKJ2009-295
MTKJ2009-296)
河南省教育厅自然科学研究计划项目(2009B62002)
关键词
新安煤田
煤层厚度
变化规律
成因
Xin′an coal field
thickness of coal seam
variation regularities
cause
