吐哈盆地砂岩型铀矿流体动力学数值模拟  

Numerical Simulation of Fluid Dynamics of Sandstone-type Uranium Deposits in Turpan-Hami Basin

作　　者：刘传东 郭世超 杜鹏飞 李增华 邹永强 王新凯 刘嘉炜 LIU Chuandong;GUO Shichao;DU Pengfei;LI Zenghua;ZOU Yongqiang;WANG Xinkai;LIU Jiawei(State Key Laboratory of Nuclear Resources and Environment,East China University of Technology,Nanchang,Jiangxi 330013,China;School of Earth Sciences,East China University of Technology,Nanchang,Jiangxi 330013,China;Geologic Party No.208,CNNC,Baotou,Inner Mongolia 014010,China)

机构地区：[1]东华理工大学核资源与环境国家重点实验室,江西南昌330013 [2]东华理工大学地球科学学院,江西南昌330013 [3]核工业二〇八大队,内蒙古包头014010

出　　处：《世界核地质科学》2023年第2期197-207,共11页World Nuclear Geoscience

基　　金：国家自然科学基金项目(编号:No.42172329);东华理工大学研究生教改项目“大数据与人工智能背景下地学类研究生宽口径人才培养模式研究”(编号:yjsjg2202006)联合资助

摘　　要：构造隆升作用是砂岩型铀矿的重要控制因素之一。吐哈盆地西南缘的十红滩矿床位于艾丁湖斜坡带,受近东西向断裂和构造隆升作用的控制明显。文章基于FLAC3D数值模拟软件,探究了盆缘构造挤压隆升背景下,流体运移路径以及构造挤压形成的扩容区与已知矿床空间分布的关系。模拟结果表明,新生代挤压构造运动造成的体积应变主要分布于侏罗纪地层,流体运移模式为盆地基底向侏罗纪盖层流动。体积应变和流体运移叠加结果显示,吐哈盆地盆缘山脉的构造隆升挤压有利于砂岩型铀矿床的形成。Tectonic uplift is one of the important controlling factor for sandstone type uranium deposits.Shihongtan deposit in the southwest margin of Turpan-Hami Basin is located in the Aiding Lake slope zone and is obviously controlled by the nearly E-W trending fault and tectonic uplift.In this paper,based on the FLAC3D numerical simulation software,the migration path of fluid as well as the relationship between the dilation area formed by tectonic compression and the spatial distribution of known ore deposits were investigated.The simulation results show that the volume strain caused by the Cenozoic compressive tectonic movement is mainly distributed in the Jurassic strata and the fluid migration mode is from the basin basement to the Jurassic coverlayer.The superimposed results of volume strain and fluid migration indicates that tectonic uplift and extrusion of the basin-margin mountains in Turpan-Hami Basin is conducive to the formation of sandstone type uranium deposits.

关 键 词：构造控矿 数值模拟 砂岩型铀矿 十红滩铀矿床 吐哈盆地 

分 类 号：P619.14[天文地球—矿床学]