(1. 北京科技大學(xué) 金屬礦山高效開采與安全教育部重點(diǎn)實(shí)驗(yàn)室，北京 100083；
2. 北京科技大學(xué) 土木與環(huán)境工程學(xué)院，北京 100083；
3. 馬鋼集團(tuán)礦業(yè)有限公司，馬鞍山 243000)
摘 要: 為解決和睦山鐵礦充填料漿的管道自流輸送問(wèn)題，采用固−液兩相流理論和計(jì)算流體動(dòng)力學(xué)(CFD)方法，建立充填料漿在管道中自流輸送的兩相流控制方程；利用Gambit構(gòu)造實(shí)際管道的三維網(wǎng)格模型，在Fluent的3D解算器中進(jìn)行數(shù)值模擬。通過(guò)分析管道輸送的阻力損失和彎管部分的受力情況，獲得料漿輸送的最佳濃度和流量。料漿坍落度試驗(yàn)、自然沉降試驗(yàn)以及現(xiàn)場(chǎng)工業(yè)輸送試驗(yàn)驗(yàn)證了數(shù)值模擬結(jié)果的可靠性。研究結(jié)果為該礦即將投入使用的永久充填系統(tǒng)運(yùn)行參數(shù)的選取提供了重要的依據(jù)。
關(guān)鍵字: 自流輸送；固−液兩相流；計(jì)算流體動(dòng)力學(xué)；數(shù)值模擬；阻力損失
（1. State Key Laboratory of High-efficient Mining and Safety of Metal Mines, Ministry of Education,
University of Science and Technology Beijing, Beijing 100083, China;
2. School of Civil and Environmental Engineering, University of Science and Technology Beijing,
Beijing 100083, China;
3. Magang Group Mining Co., Ltd., Ma’anshan 243000, China）
Abstract:In order to solve the gravity transportation problems of backfilling slurry by pipelines in Hemushan Iron Mine, solid-liquid two-phase flow theory and computational fluid dynamics (CFD) method were used. Two-phase flow control equations of backfilling slurry in the pipeline through the gravity transportation were established. The three-dimensional (3D) mesh model of real pipeline was established using soft Gambit and the numerical simulation was conducted in the 3D solver of Fluent. Through analyzing resistance loss of the pipeline and force condition of the elbow, optimal transportation concentration and volume flow of the backfilling slurry were acquired. The slump test and natural settlement test of backfilling slurry and in-situ industrial transportation test verify the reliability of the numerical simulation results. The research results provide important basis for the parameter selection of the permanent backfilling system in the mine.
Key words: gravity transportation; solid-liquid two-phase flow; computational fluid dynamics; numerical simulation; resistance loss
