(1. 江西理工大学 资源与环境工程学院，赣州 341000； 2. 中国科学院 寒区旱区环境与工程研究所，兰州 730000； 3. 江西理工大学 建筑与测绘工程学院，赣州 341000)
摘 要: 掌握稳渗状态下单孔注液的影响半径对于合理确定注液孔的孔网参数具有重要意义。假设注液孔孔底以上湿润体为椭球体，基于注液孔孔周入渗强度等于注液孔孔底影响范围内的下渗强度，建立稳渗状态下单孔注液影响半径的计算模型；现场试验获得5种注液强度条件下的孔中液面高度和影响半径，并与模型计算结果进行比较。结果表明：采用该模型计算得到的影响半径与现场试验得到的影响半径的最大误差为8.14%，满足工程要求，表明单孔注液影响半径计算模型是有效的；当注液孔半径小于0.2 m时，随注液孔半径增加，影响半径成非线性增加；当注液孔半径大于0.2 m时，随注液孔半径增加，影响半径近似成线性增加；当注液孔半径为0.1 m和孔中液面高度不超过3 m时，注液孔影响半径与孔中液面高度近似成线性关系。
关键字: 原地浸矿；注液孔；影响半径；离子型稀土
（1. School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China; 2. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China; 3. School of Architectural and Surveying & Mapping Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China）
Abstract:It is of great significance for the reasonable determination of the hole pattern parameters to master the influence radius of single-hole injection in steady state. This work assumed that the wetted body above the hole bottom was ellipsoid, based on the infiltration intensity around injecting hole equals to the leaching intensity in the influenced area of hole bottom, a calculation model was established for the influence radius of single-hole injection under steady infiltration state. The liquid height in the hole and the influence radius were obtained by field test under five kinds of injection intensity, and compared with the calculated results. The results show that the maximum error between calculated value and measured value of the influence radius is 8.14%, up to the requirement of project, so the validity of the model is proved. When the injecting hole radius is not more than 0.2 m, the influence radius increases nonlinearly with the increase of aperture. And the influence radius increases linearly with the increase of aperture when the injecting hole radius is more than 0.2 m. The influence radius of the injecting hole is approximately linear with the liquid height in the hole when the injecting hole radius is 0.1 m and the liquid height in the hole is not more than 3 m.
Key words: in-situ leaching; injecting hole; influence radius; ion-type rare earth
