鹤岗盆地断裂构造特征与地应力演化史分析  

Faulted Structural Features and Crustal Stress Evolution History Analysis in Hegang Basin

作　　者：蔡超 时伟[2] 曹代勇[3] 

机构地区：[1]黑龙江龙煤地质勘探公司,黑龙江佳木斯154004 [2]中国地质大学(北京),北京100083 [3]中国矿业大学(北京),北京100083

出　　处：《中国煤炭地质》2016年第3期8-11,25,共5页Coal Geology of China

基　　金：国家自然科学基金(41272176)

摘　　要：鹤岗盆地断裂构造发育,对煤炭勘查和煤矿生产造成巨大影响。基于鹤岗盆地内13个矿区346条正断层、逆断层的走向分布规律,分析了各期构造应力与区内断裂的生成关系。研究表明:区内逆断层走向以NE、NNE、NW为优势方向,正断层走向以NE、NNE、NW、NNW为优势方向;含煤盆地经历了燕山期(NW-SE向挤压)、喜马拉雅早期(NW-SE向伸展)、喜马拉雅晚期(NW-SE向挤压)三期构造运动,燕山期、喜马拉雅晚期形成NE、NNE向逆断层与NW及NNW向正断层,喜马拉雅早期形成NW向逆断层与NE、NNE向正断层;研究区断裂优势方向的多变性说明受到多期不同性质应力场的控制。Faulted structures are well developed in the Hegang Basin, thus formed great impacts on coal exploration and coal mining.Based on 346 normal and reverse faults strike distribution pattern in 13 mine areas, Hegang Basin have analyzed relationship between each stage structural stress and causation of fault formation in the area. The study has shown that the strikes of reverse fault in the area are NE, NNE and NW predominated; and of normal fault NNW predominated. The coal-bearing basin has experienced Yanshanian NW-SE compression, early Himalayan NW-SE extension, late Himalayan NW-SE compression three stages. The NE, NNE reverse faults and NW, NNW normal faults have been formed during Yanshanian and late Himalayan stages; NE, NNE reverse faults and NW,NNW normal faults during early Himalayan stage. Variable fault predominant directions in the study area have explained the controlling of miscellaneous stress fields.

关 键 词：鹤岗盆地 构造特征 地应力 

分 类 号：P641[天文地球—地质矿产勘探]