(1. 江西理工大學 資源與環(huán)境工程學院，贛州 341000； 2. 中國科學院 寒區(qū)旱區(qū)環(huán)境與工程研究所，蘭州 730000； 3. 江西理工大學 建筑與測繪工程學院，贛州 341000)
摘 要: 掌握穩(wěn)滲狀態(tài)下單孔注液的影響半徑對于合理確定注液孔的孔網(wǎng)參數(shù)具有重要意義。假設注液孔孔底以上濕潤體為橢球體，基于注液孔孔周入滲強度等于注液孔孔底影響范圍內(nèi)的下滲強度，建立穩(wěn)滲狀態(tài)下單孔注液影響半徑的計算模型；現(xiàn)場試驗獲得5種注液強度條件下的孔中液面高度和影響半徑，并與模型計算結(jié)果進行比較。結(jié)果表明：采用該模型計算得到的影響半徑與現(xiàn)場試驗得到的影響半徑的最大誤差為8.14%，滿足工程要求，表明單孔注液影響半徑計算模型是有效的；當注液孔半徑小于0.2 m時，隨注液孔半徑增加，影響半徑成非線性增加；當注液孔半徑大于0.2 m時，隨注液孔半徑增加，影響半徑近似成線性增加；當注液孔半徑為0.1 m和孔中液面高度不超過3 m時，注液孔影響半徑與孔中液面高度近似成線性關(guān)系。
關(guān)鍵字: 原地浸礦；注液孔；影響半徑；離子型稀土
（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
