煤田地质与勘探2017，Vol.45Issue(2)：1-7,13,8.DOI:10.3969/j.issn.1001-1986.2017.02.001
韩城矿区南部构造变形特征与构造成因
Analysis of tectonic deformation features and tectonic origin in the south of Hancheng mining area
摘要
Abstract
Based on the surface observation data, the new seismic exploration and drilling engineering data, using the research ideas and methods of structural analysis, the paper carried out staged restoration of tectonic stress field, discussed the tectonic deformation features, mechanism of tectonic formation and phase of deformation. The tec-tonic deformation characteristics and tectonic space combination relationship of the study area were analyzed, tec-tonic styles controlling coalbeds were divided, the tectonic origin was revealed, prediction and evaluation of the favorable coal-bearing areas were conducted. Research results show that there are 3 tectonic styles: NEE squeezed block, NEE multiple graben and horst tectonics and NNE squeezed-stretched composite structure. NEE multiple graben and horst tectonics are major. Since the end of Trias, the study area has experienced NNW squeezed tectonic action during Indosinian movement period, NWW squeezed tectonic action during middle Yanshan movement pe-riod, NE squeezed-right rotated and NW-SE stretching action during Himalaya movement period. The maximum principal compressive stress position are 335°, 285°, 44° in turn. The normal faults in NEE direction are further developed along the early shear joint plane formed in the Himalaya movement period. The faults in NEE direction are the most important tectonic controlling the spatial distribution of coal seams. The degree of faults development controls the next step prospecting and mining process of coal resources. The northeastern part of the study area has moderate buried depth of coal seams, simple tectonics, is the most favorable area, through further exploration and evaluation, may become an important following resource block.关键词
断层/控煤构造样式/构造应力场/构造成因/渭北石炭–二叠纪煤田/韩城矿区Key words
fault/style of tectonic control of coal/tectonic stress field/tectonic origin/Weibei Permo-Carboniferous coalfield/Hancheng mining area分类
天文与地球科学引用本文复制引用
王辉,范玉海,崔胜,贺小龙,金谋顺,潘春娟,梁敏,张少鹏..韩城矿区南部构造变形特征与构造成因[J].煤田地质与勘探,2017,45(2):1-7,13,8.基金项目
国家科技重大专项课题(2008ZX05025-006) （2008ZX05025-006）
国家重点基础研究发展计划(973计划)项目(2015CB453000) （973计划）
国家自然科学基金项目(U1261111) （U1261111）
陕西省第三批地勘基金项目(61201203093) National Science and Technology Major Project(2008ZX05025-006) （61201203093）
The National Basic Research Program of China(973 Program) (2015CB453000) （973 Program）
National Natural Science Foundation of China (U1261111) （U1261111）
Third Geological Exploration Fund Project in Shaanxi Province, China(61201203093) （61201203093）
