基于构造物理模拟实验的桌子山煤田棋盘井井田奥灰边界构造因素分析  

Ordovician Limestone Boundary Structural Factor Analysisin Qipanjing Minefield,Zhuozishan Coalfield Based on Tectonic Physical Simulation Experiment

作　　者：张国俊 黄金荣 鲁欣 王占军 史志江 Zhang Guojun;Huang Jinrong;Lu Xin;Wang Zhanjun;Shi Zhijiang(Qipanjing Coalmine(East),Mengxi Coal Chemical Industry Co.Ltd.,CHN Energy,Wuhai,Inner Mongolia 016100)

机构地区：[1]国能蒙西煤化工股份有限公司棋盘井煤矿(东区),内蒙古乌海016100

出　　处：《中国煤炭地质》2022年第2期10-13,18,共5页Coal Geology of China

基　　金：国家自然科学基金项目“龙门山构造带南段中-新生代构造变形研究”(41602212);中国博士后科学基金面上项目“龙门山南段前陆构造扩展带构造变形特征与变形过程研究”(2019M653694)。

摘　　要：棋盘井井田位于桌子山煤田东南缘,以苛素乌断层为界分为东西两区,东区奥灰缺失,成因机理尚不明确。在分析研究区地质构造格架、井田地质构造的基础上,结合构造物理模拟实验,研究了构造作用对奥灰地层缺失的影响。结果表明:桌子山地区构造几何形态和构造物理模拟结果高度相似,反映出棋盘井井田苛素乌边界断裂可能是顺基底的滑脱作用造成的,且改变了奥陶系灰岩沉积的原始边界,使得沉积边界向东迁移。The Qipanjing minefield is situated at southeastern margin of the Zhuozishan coalfield,taking the Kesuwu fault as a boundary,divided into east and west two parts;Ordovician limestone is hiatus in east part,genetic mechanism still not clear.Based on study area geological tectonic framework,minefield geological structure analysis,combined with structure physical simulation experiment have studied impact from tectonic activities on Ordovician limestone hiatus.The result has shown that structural geometry in Zhuozishan area is highly similar to structure physical simulation result,reflected Kesuwu boundary fault possibly caused by along basement decollement,furthermore changed Ordovician limestone sedimentary original boundary,made the sedimentary boundary migrated to the east.

关 键 词：奥陶系 地层缺失 砂箱物理模拟实验 棋盘井井田 

分 类 号：P542[天文地球—构造地质学]