青海东北部木里煤田控煤构造样式与找煤预测  

Coal-controlled structural styles and looking for coal resources in Muli coalfield,northeastern Qinghai,China

作　　者：曹代勇[1] 孙红波[1] 孙军飞[1] 

机构地区：[1]中国矿业大学/煤炭资源与安全开采国家重点实验室,北京100083

出　　处：《地质通报》2010年第11期1696-1703,共8页Geological Bulletin of China

基　　金：煤炭资源与安全开采国家重点实验室自主研究课题(编号:SKLCRSM08B01);中国地质调查局国土资源大调查项目<全国煤炭资源潜力评价>(编号:1212010633908)资助

摘　　要：在系统分析木里煤田构造格局和构造控煤特征的基础上,将本区控煤构造样式划分为压缩、剪切、滑动3大类和8种类型。揭示了控煤构造样式与煤系赋存之间的关系,木里煤田控煤构造样式以压缩为主,分布广泛,部分矿区构造样式表现为剪切和层滑,各矿区煤系赋存状态受煤田构造格局的控制,具有南北分带、东西分段的特征。煤田边缘构造复杂,控煤构造样式以逆冲前锋型、逆冲断夹块型、逆冲-褶皱型和对冲型为主,含煤向斜形态多不完整;煤田中部地质构造相对简单,控煤构造样式以褶皱-断裂型为特征,含煤岩系赋存稳定,是有利的勘查开发区段。Based on the analysis of structural framework and coal-control structural features of Muli coalfield,Qinghai Province,the coal-controlled structural styles were classified into 3 groups including compression group,shear group and gliding group,and 8 types.The relation between coal distribution and coal-controlled structural styles were discussed,the structures control coal in Muli coalfield are mainly compressional structure styles which developed widely,complemented by shear style and interlayer gliding style in some mine areas.Coal measures distribution is controlled by structural framework characterized by zonation from the north to south and subsection from east to west.Structure deformation is strong and complex in the marginal coalfielol,and the structural styles include thrust front pattern,thrust horse pattern,thrust-fold pattern and opposite thrust pattern,incompletely sawed synclines containing coal seams.Structures in middle zonation are simple and coal-controlled structural style is characterized by fold-thrust pattern,coal measures distributed stable in favor of exploration and development.

关 键 词：青海 木里煤田 控煤构造样式 找煤预测 

分 类 号：P618.11[天文地球—矿床学]