ISSN: 1003-6326
CN: 43-1239/TG

Vol. 27    No. 5    May 2017

Influence of temperature and air pressure on rising law of capillary water in tailings dam of metal mine
ZHANG Qiu-cai1, TIAN Ya-kun1, ZHANG Zhi-jun1, LI Ya-jun2, LIU Xuan-zhao3, HE Gui-cheng1, LIU Yong1
(1. School of Nuclear Resources Engineering, University of South China, Hengyang 421001, China;
2. Hunan Nonferrous Metallurgy Labor Protection Research Institute, Changsha 410000, China;
3. Lu’an Group, Changzhi 046000, China
Abstract: The capillary water will affect on stability of tailings dam, and the surface tension will be changed along with temperature and pressure, which has a great influence on the regularity of the capillary water rising. Therefore, the temperature, pressure time and the height of capillary water rising were tested and recorded during a long term of 95 d. Power function was used to build the analysis model for considering the capillary water rising influenced by temperature and pressure. The results indicate that the temperature has a large impact on the capillary water rising than barometric pressure, and in the early time of capillary water rising, the temperature and air pressure have little effects on it, and in the latter part of capillary water rising, the influence of temperature gradually becomes obvious. Furthermore, the analysis also indicates that the dynamic of capillary water rise gradually decay makes the surface tension influenced by the temperature and air pressure became noticeable.
Key words: capillary water; tailings dam; temperature; pressure
Superintended by The China Association for Science and Technology (CAST)
Sponsored by The Nonferrous Metals Society of China (NFSOC)
Managed by Central South University (CSU)