(1. 東華理工大學 放射性地質(zhì)與勘探技術(shù)國防重點學科實驗室，南昌 330000；
2. 昆明理工大學 國土資源工程學院，昆明 650093；3. 玉溪礦業(yè)有限公司大紅山銅礦，玉溪 653100)
摘 要: 廢石-尾砂高濃度充填是解決礦山廢尾排放的最有效途徑，也是實現(xiàn)綠色采礦的主體支撐技術(shù)之一。管道輸送特性作為高濃度料漿管道輸送的核心內(nèi)容具有重要的研究意義。本文將礦山實際充填管路進行還原，應(yīng)用Fluent軟件進行輸送模擬研究，重點以速度、質(zhì)量濃度對管道自流輸送特性及彎管部位的影響進行分析。結(jié)果表明：隨著速度的增加，管道的阻力損失呈指數(shù)增長，彎管底部受到的壓力最大。當料漿速度達到2.8 m/s，料漿濃度為85%時，漿料無法自流；當料漿速度超過3.0 m/s時，阻力損失增長變快；當料漿速度達到3.2 m/s，料漿濃度達到84%時，漿料無法自流，也會出現(xiàn)滯留現(xiàn)象，造成堵管。適合高濃度管道自流輸送的料漿濃度為83%~84%。通過半工業(yè)實驗及礦山實際阻力監(jiān)測，驗證了數(shù)值模擬結(jié)果的可靠性。
關(guān)鍵字: 廢石-尾砂充填采礦；自流輸送；高濃度料漿；阻力損失；數(shù)值模擬
（1. Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, East China University of Technology, Nanchang 330000, China;
2. Faculty of Land and Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China;
3. Dahongshan Copper Mine, Yuxi Mining Co., Ltd., Yuxi 653100, China）
Abstract:It is the most effective way to solve waste rock-tailing emissions and is one of main support techniques to realize the green mining that high-density slurry with waste rock and tailing. Pipeline characteristics has an important research significance as the core content of pipeline transportation about high-density slurry. This article reduced the mine actual filling line, the pipeline simulation research was conducted using Fluent software, the effects of velocity/quality concentration on the characteristics of gravity and bending parts were analyzed. The results show that the pipe resistance losses increase exponentially with the increase of flow velocity, the bottom of the pipe bending has the most pressure. When the velocity is more than 3.0 m/s, the resistance loss grows faster. When the velocity reaches 2.8 m/s, the slurry is not able to self-flow when the slurry concentration is 85%, when the velocity reaches 3.2 m/s, the concentration is 84%, which cannot be self-flowing, and the retention phenomenon occurs, causing the plugging pipe. It is suitable for pipe flow that the concentration of high density slurry is 83%-84%. Semi-industrial experiments and actual resistance monitoring verify the reliability of numerical simulation results in mines.
Key words: filling by waste rock-tailing; gravity delivery; high-density slurry; resistance loss; numerical simulation
