| 39 | 0 | 82 |
| 下载次数 | 被引频次 | 阅读次数 |
膏体料浆的稳定输送是矿山充填工艺安全高效运行的核心技术环节，其流变特性是决定管道输送可靠性的关键内在因素。针对毛坪铅锌矿充填过程中堵管、爆管频发的问题，本文系统分析了现场充填故障类型，并在充填站搅拌机中取样，测试了不同静置时间下充填料浆的扩展度、稠度等参数，建立了基于粘度计测试数据的充填料浆流变参数数学模型，揭示了料浆流变特性随时间的变化规律及其对输送故障的影响机制。研究结果表明：充填料浆具有显著的时变特性，静置10 min时，上、下层料浆流动性差异较小；而静置70 min后，上、下层料浆流动性差异显著增大，下层料浆屈服应力较上层高175.02%。料浆在输送过程中出现的分层与流动性劣化是诱发管道故障的主要内在原因。通过提高搅拌均匀性、提升料浆流速或优化骨料配比，可有效降低输送故障发生风险。研究成果为类似矿山的膏体充填系统优化与故障防控提供了理论依据与技术参考。
Abstract：The stable transportation of paste backfill slurry is a critical technical aspect for the safe and efficient operation of mine backfilling processes, in which the rheological properties of the slurry serve as key intrinsic factors determining the reliability of pipeline transportation. In response to the frequent occurrences of pipeline blockage and bursting in the backfilling process at the Maoping Lead-Zinc Mine, this study systematically analyzes the types of on-site backfilling failures. Samples were taken from the mixer in the backfill station to test parameters such as fluidity and consistency of the backfill slurry under different standing times. A mathematical model for calculating the rheological parameters of the backfill slurry was established based on viscometer test data, revealing the variation patterns of the slurry's rheological properties over time and their impact on transportation failures. The results indicate that the backfill slurry exhibits significant time-dependent characteristics. After standing for 10 minutes, the difference in fluidity between the upper and lower layers of the slurry was minor. However, after standing for 70 minutes, the fluidity difference between the layers increased significantly, with the yield stress of the lower layer being 175.02% higher than that of the upper layer. The stratification and deterioration of fluidity during slurry transportation are identified as the main internal causes of pipeline failures. Improving mixing homogeneity, increasing slurry flow velocity, or optimizing the aggregate ratio can effectively reduce the risk of transportation failures. The research findings provide theoretical support and technical references for the optimization and failure prevention of paste backfilling systems in similar mines.
[1]杨小聪,郭利杰.尾矿和废石综合利用技术[M].北京:化学工业出版社, 2018.YANG X C, GUO L J. Tailings and waste rock comprehensive utilization technology[M]. Beijing:Chemical Industry Press,2018.
[2]吴爱祥,王洪江.金属矿膏体充填理论与技术[M].北京:科学出版社, 2015.WU A X, WANG H J. Theory and technology of paste filling in metal mine[M]. Beijing:Science Press, 2015.
[3]陈鑫政,杨小聪,郭利杰,等.基于扩散度的尾砂膏体流变特性[J].工程科学学报, 2020, 42(10):1299-1307.CHEN X Z, YANG X C, GUO L J, et al. Rheological properties of tailings paste based on a spread test[J]. Chinese Journal of Engineering, 2020, 42(10):1299-1307.
[4]吴爱祥,王勇,王洪江.膏体充填技术现状及趋势[J].金属矿山, 2016,(7):1-9.WU A X, WANG Y, WANG H J. Status and prospects of the paste backfill technology[J]. Metal Mine, 2016,(7):1-9.
[5]刘晓辉,吴爱祥,王洪江,等.膏体流变参数影响机制及计算模型[J].工程科学学报, 2017, 39(2):190-195.LIU X H, WU A X, WANG H J, et al. Influence mechanism and calculation model of CPB rheological parameters[J].Chinese Journal of Engineering, 2017, 39(2):190-195.
[6]刘晓辉,吴爱祥,姚建,等.膏体尾矿管内滑移流动阻力特性及其近似计算方法[J].中国有色金属学报, 2019, 29(10):2403-2410.LIU X H, WU A X, YAO J, et al. Resistance characteristic and approximate calculation of paste tailings slip flow inside pipe[J]. The Chinese Journal of Nonferrous Metals, 2019,29(10):2403-2410.
[7]王小林.掺粗骨料高浓度充填自流输送平直管道磨损规律[D].北京:北京科技大学, 2023.WANG X L. Wear law of horizontal straight pipe for the transport of high concentration backfill containing coarse aggregate by gravity[D]. Beijing:University of Science and Technology Beijing, 2023.
[8]王小林,严庆文,王洪江,等.含粗骨料尾砂膏体长距离管输流变特性及阻力预测[J].哈尔滨工程大学学报, 2024, 45(3):535-542.WANG X L, YAN Q W, WANG H J, et al. Rheological properties and pipe resistance prediction of tailing paste containing coarse aggregate in long-distance transportation[J].Journal of Harbin Engineering University, 2024, 45(3):535-542.
[9]YANG X B, XIAO B L, GAO Q, et al. Determining the pressure drop of cemented Gobi sand and tailings paste backfill in a pipe flow[J]. Construction and Building Materials, 2020,255:119371.
[10]吴爱祥,李红,程海勇,等.全尾砂膏体流变学研究现状与展望(上):概念、特性与模型[J].工程科学学报, 2020, 42(7):803-813.WU A X, LI H, CHENG H Y, et al. Status and prospects of researches on rheology of paste backfill using unclassifiedtailings(Part 1):concepts, characteristics and models[J].Chinese Journal of Engineering, 2020, 42(7):803-813.
[11]吴爱祥,李红,程海勇,等.全尾砂膏体流变学研究现状与展望(下):流变测量与展望[J].工程科学学报, 2021, 43(4):451-459.WU A X, LI H, CHENG H Y, et al. Status and prospects of researches on rheology of paste backfill using unclassifiedtailings(Part 2):rheological measurement and prospects[J].Chinese Journal of Engineering, 2021, 43(4):451-459.
[12]史采星,杨凯,郭利杰,等.料浆温度对超细尾砂充填料浆流动性能影响研究[J].有色金属(矿山部分), 2024, 76(5):58-67.SHI C X, YANG K, GUO L J, et al. Study on influence of slurry temperature on the flow performance of ultrafine tailings backfill slurry[J]. Nonferrous Metals(Mining Section), 2024,76(5):58-67.
[13]陈鑫政,蒋合国,郭利杰,等.基于RSM的复合骨料充填料浆流变特性试验[J].有色金属工程, 2022, 12(9):107-114.CHEN X Z, JIANG H G, GUO L J, et al. Experimental study on rheological properties of composite aggregate filling slurry based on response surface methodology[J]. Nonferrous Metals Engineering, 2022, 12(9):107-114.
[14]王文才,吴周康,高小雷,等.充填堵管事故及气压通管技术分析与应用[J].矿冶, 2023, 32(1):1-5.WANG W C, WU Z K, GAO X L, et al. Analysis and application of filling and plugging accident and pneumatic pipe technology[J]. Mining and Metallurgy, 2023, 32(1):1-5.
[15]中华人民共和国国家市场监督管理总局.金属非金属矿山充填工程技术标准:GB/T 51450—2022[S].北京:中国计划出版社, 2022.State Administration for Market Regulation of the People's Republic of China. Technology standard for backfill engineering in metallic and non-metallic mines:GB/T 51450—2022[S].Beijing:China Planning Press, 2022.
[16]中华人民共和国国家市场监督管理总局.土工试验方法标准:GB/T 50123—2019[S].北京:中国计划出版社, 2019.State Administration for Market Regulation of the People's Republic of China. Standard for soil test method:GB/T50123—2019[S]. Beijing:China Planning Press, 2019.
基本信息:
中图分类号:TD853.34
引用信息:
[1]唐琳,陈鑫政,马卓宇,等.复合骨料膏体充填料浆的流变特性究[J].矿冶,2025,34(06):900-905.
基金信息:
国家重点研发计划项目（2022YFC2904103）