摘要
目前原地浸矿浸渗环节缺乏可靠的设计方法,资源综合回收率偏低及滑坡地质灾害频发等问题突出。选取浑圆形裸脚式稀土矿山为研究对象,建立原地浸矿“注液—收液”轴对称简化模型,基于地下水动力学和Dupuit假定,推导矿山稳定浸润线方程,分析方程计算误差。浸润线方程以分段函数表示,其中注液区的浸润线是椭圆线的上半支,非注液区的浸润线是抛物线与对数曲线组成的复杂形状。误差分析表明,计算误差沿流场方向逐渐增大,出渗坡度、基岩坡度、注液范围和相对渗透系数等参数的取值对浸润线方程计算误差的影响有限,方程在浑圆形裸脚式稀土矿山原地浸矿中具有较好的适用性,可为“注液—收液”浸渗环节的“事先预测(设计)”提供理论依据。
At present,in-situ leaching mining has some disadvantages of lacking reliable design methods,low comprehensive recovery rate of resources and frequent landslide geological disasters.A spherical bare-foot rare earth mine was selected as the research object,and a simplified axisymmetric model of“liquid injection-liquid collection”was established for in-situ leaching.Based on groundwater dynamics and the Dupuit hypothesis,the mine stable infiltration line equation was derived,and the calculation error of the equation was analyzed.The infiltration line equation was expressed as a piecewise function,where the infiltration line in the liquid injection area was the upper half of the elliptic line,and the infiltration line in the non-liquid injection area was a complex shape composed of parabola and logarithmic curve.The error analysis showed that the calculation error gradually increased along the direction of the flow field,and the values of seepage slope,bedrock slope,liquid injection range and relative permeability coefficient had little effect on the calculation error of the infiltration line equation.The equation has good applicability in the in-situ leaching of the spherical barefoot rare earth mine.It can provide a theoretical basis for the“prediction in advance(design)”of the“liquid injection-liquid collection”infiltration link.
作者
鲍建平
桂勇
罗嗣海
王观石
BAO Jianping;GUI Yong;LUO Sihai;WANG Guanshi(School of Civil and Surveying&Mapping Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi,China;School of Resources and Civil Engineering,Gannan University of Science and Technology,Ganzhou 341000,Jiangxi,China;Key Laboratory of Mine Geological Disaster Prevention and Control and Ecological Restoration,Ganzhou 341000,Jiangxi,China;Nanchang Hangkong University,Nanchang 330063,China)
出处
《有色金属科学与工程》
CAS
北大核心
2023年第6期879-886,共8页
Nonferrous Metals Science and Engineering
基金
国家重点研发计划资助项目(2019YFC1805101)
博士科研启动基金(YJ2018-03)
教育厅科技项目(GJJ191592)
江西理工大学应用科学学院大学生创新创业训练资助项目(S202013434018
S202113434018)。
关键词
稀土矿山
裸脚式矿山
原地浸矿
渗流规律
浸润线方程
浸渗环节
rare earth mine
barefoot type mine
in-situ leaching mining
permeability rule
infiltration line equation
links in soak and seepage
