期刊论文

Tan, K.-X.(nhtkx@126.com)

中文

原子能科学技术

1000-6931

2011

45

4

500-505

国家自然科学基金资助项目（50874063）； 湖南省自然科学基金资助项目（07JJ6168）； 湖南省重点学科建设项目资助；

本校为第一且通讯机构

原地浸出采铀是一复杂的非线性动力系统,涉及诸多因素与过程的耦合和正负反馈作用。为研究地浸采铀过程中岩石结构力学及其演化规律、岩石变形作用、孔隙度与渗透率的动力演化等对浸出效果的影响,建立了一多因素、多过程耦合的综合动力学模型和模拟方法,并基于Fortran与C++语言编制了1～3维模拟程序。通过对某地浸铀矿床某采区酸化、生产、溶浸末期各阶段的数值模拟,得到各生产时期矿岩中铀的浓度分布,该采区酸化40d后浸出液中铀浓度增加到15mg/L,以及该采区铀5a后基本浸出完毕;在生产末期,浸出液中的铀、酸浓度下降明显,采场区域铀浓度降低到10mg/L,pH升至2左右。数值模拟结果与矿山实际生产情...

In-situ leaching of uranium is a very complicated non-linear dynamic system, involving the couplings among various factors and processes and the positive and negative feedback actions. In order to study the influences of rock structural mechanics and its evolution law, rock deformation, the dynamic evolution of porosity and permeability on leaching effect, a coupling model and simulation method were founded among multivariate and multi-process leaching kinetics, and a 3-D simulation program was compiled based on Fortran and C++. Through the numerical simulation of the leaching process in acidi...