华东地质2026，Vol.47Issue(3)：486-498,13.DOI:10.16788/j.hddz.32-1865/P.2024.10.010
淮北煤田任楼煤矿断裂构造及顶板断裂面分形研究
Fractal study on fracture structure and roof fracture surface of Renlou coal mine in Huaibei Coalfield,Anhui
摘要
Abstract
Fracture structures and roof fracture surfaces play a significant controlling role in the develop-ment of coal mine geological hazards.This study applies the grid method and pixel coverage method from fractal theory to analyze the fractal characteristics of fracture structures and roof fracture surface rocks in the Huaibei Coalfield,Sulin Mining Area,and Renlou Coal Mine.The results show that the fracture structures in the mining area exhibit good self-similarity.The fractal dimension values of the fracture structures in the Huaibei Coalfield,Sulin Mining Area,and Renlou Coal Mine are 1.6629,1.6044,and 1.4032,respectively.The fractal dimension values of the fracture structures decrease as the regional geological scope narrows and the scale increases.Within the Renlou Coal Mine area,the fractal dimension values gradually decrease from north to south.In the Sulin Min-ing Area,the contour lines of the fracture structure fractal dimensions generally trend in near EW and NNE direc-tions,consistent with the principal stress direction of coal-rock fractures in the Renlou Mine where the fractal di-mension values are similar.This indicates a certain coupling relationship between the fractal dimension values and coal mine distribution.With increasing depth,the clay content in the roof rocks of the Renlou Coal Mine rises from 60%to 83%,while the fractal dimension values increase from 1.367 to 1.751.This demonstrates that the overall fractal dimension values of the roof rocks increase with higher clay content,revealing the significant influ-ence of mudstone on roof stability and its depth-related pattern.关键词
淮北煤田/任楼煤矿/断裂构造/分形分维Key words
Huaibei Coalfield/Renlou Coal Mine/fracture structure/fractal dimension分类
天文与地球科学引用本文复制引用
陈大星,施国栋,张婉婷,姚多喜..淮北煤田任楼煤矿断裂构造及顶板断裂面分形研究[J].华东地质,2026,47(3):486-498,13.基金项目
国家自然科学基金面上项目"随机溶孔-裂隙网络地质建模及其渗透特性研究(编号:41977253)"和安徽省高校协同创新项目"关闭/废弃矿井地下空间地球物理精细探测技术与工程地质特征研究(编号:GXXT-2021-016)"联合资助. （编号:41977253）
