温度和气压对某金属矿山尾矿坝中毛细水上升规律的影响

发布时间：2018-06-16 05:05

本文选题：毛细水 + 尾矿坝　；参考：《中国有色金属学报》2017年05期

【摘要】：毛细水的存在对尾矿坝的安全稳定有一定影响,而温度、气压的改变会引起毛细水表面张力的变化,进而对尾矿砂中毛细水上升规律产生影响。通过试验模拟尾矿坝中毛细水上升过程,对长期(95 d)毛细水上升过程进行测计,记录当时的温度、气压、时间、上升高度等。建立分别考虑温度、气压及综合考虑温度及气压的毛细水上升规律的分析模型。结果表明:温度对毛细水上升的影响较气压大;在毛细水上升初期,温度、气压对毛细水上升规律的影响不大,但在上升后期其影响逐渐明显。这是由于毛细水上升过程中温度气压对表面张力的影响随着毛细水上升动力逐渐衰减变得显著所致。
[Abstract]:The existence of capillary water has a certain influence on the safety and stability of tailings dam, and the change of temperature and pressure will cause the change of surface tension of capillary water, and then affect the law of capillary water rising in tailings. By simulating the capillary water rising process in the tailings dam, the capillary water rising process for a long period of 95 days is measured, and the temperature, pressure, time and rising height are recorded at that time. An analytical model of capillary water rising law considering temperature, air pressure and temperature and pressure was established. The results show that the effect of temperature on capillary water rise is greater than that of atmospheric pressure, and at the initial stage of capillary water rise, the effect of temperature and pressure on capillary water rise is not significant, but the effect is gradually obvious at the later stage of rising. This is due to the effect of temperature and pressure on the surface tension in the process of capillary water rising.
【作者单位】：南华大学核资源工程学院;湖南有色冶金劳动保护研究院;璐安集团;
【基金】：国家自然科学基金资助项目(51004067,51374129) 高等学校博士学科点专项科研基金资助项目(20104324120001) 湖南省教育厅重点科研基金资助项目(17A184) 衡阳市2014年社会发展科技支撑计划资助项目(2014KS28) 南华大学校级创新团队计划资助项目(NHCXTD04);南华大学研究生科研创新项目(2012XCX22)~~
【分类号】：TV223.4;TV649

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