Analysis of the dynamic response and stability of fine grained tailings dam by upstream embankment method in the area of high intensity earthquake

被引：0
|
作者：
Wang W. [1 ,2 ]
Yin G. [1 ,2 ]
Wei Z. [1 ,2 ]
Jing X. [3 ]
Yang Y. [1 ,2 ]
Chen Y. [4 ]
机构：
[1] State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing
[2] College of Resources and Environmental Sciences, Chongqing University, Chongqing
[3] College of Safety Engineering, Chongqing University of Science and Technology, Chongqing
[4] Department of Civil Engineering, The University of Tokyo, Tokyo
来源：
| 1600年 / Academia Sinica卷 / 36期
基金：
中国国家自然科学基金;
关键词：
Fine grained tailings; High-intensity seismic active area; Mining engineering; Permanent deformation; Stability; Upstream embankment method;
D O I：
10.13722/j.cnki.jrme.2016.1221
中图分类号：
学科分类号：
摘要：
The present paper focuses on the study of a project called as Hetaojing tailings pond to store fine grained tailings, which is located in the active seismic area of Zhongdian-Dali. The intensity of 8 degree is specified in the design. The feasibility of upstream embankment method for tailings pond with the similar characteristics was investigated. In order to analyze the seismic response and the static and dynamic stability of the tailings dam, an integrated approach was applied, consisting of the embankment model test, geotechnical engineering test, theoretical analysis and numerical simulation. The results show that the static and dynamic stability of tailings dam in Hetaojing tailings pond can be improved to meet the requirements of national codes by means of constructions of a high starter dam, appropriate drainage and fitting the slope with rocks, which confirms the feasibility of upstream embankment method with the appropriate earthquake resistant construction for fine grained tailings pond in seismic area theoretically. It was also found that due to the generation and growth of dynamic pore water pressure, the dynamic safety factors of tailings dams fluctuated and decreased gradually during the earthquake. The excessive permanent deformation is one of the major seismic disaster forms for the fine grained tailings dam. The insufficient length and height clearance of the safety beach makes the overtopping more likely to occur after earthquake. Furthermore, the causes of the characteristics of fine grained tailings dam including the particle size grading, the shallow phreatic line and the gentle beach face were analyzed in mesoscopic view. © 2017, Science Press. All right reserved.
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页码：1201 / 1214
页数：13
相关论文
共 38 条
  • [1] Rico M., Benito G., Salgueiro A.R., Et al., A review of the European incidents in the worldwide context, Journal of Hazardous Materials, 152, 2, pp. 846-852, (2008)
  • [2] Vick S.G., Risk-based approach to seismic stability and inundation hazard for upstream tailings dams, Proceedings of International Symposium on Safety and Rehabilitation of Tailings Dams, pp. 52-62, (1990)
  • [3] Priscu C., Behavior of mine tailings dams under high tailings deposition rates, pp. 4-6, (1999)
  • [4] GB50863-2013 Code for design of tailings facilities, (2013)
  • [5] GB50863-2012Code for design of tailings facilities, (2012)
  • [6] Yin G., Yang Z., Wei Z., Et al., Physical and mechanical properties of Yangla copper's tailings, Journal of Chongqing University:Natural Science, 30, 9, pp. 117-122, (2007)
  • [7] Wei Z., Chen Y., Li G., Numerical simulation on the seepage of talings dam bt centerline method construction, Journal of Chongqing University, 35, 7, pp. 89-92, (2012)
  • [8] Yin G., Wei Z., Xu J., Analysis of the Characteristics and Dam Stability of fine Grained Tailings, (2004)
  • [9] Cai Q., Cheng J., Yu C., Definition and classification of fine grain materials from mine tailings, Soil Engineering and Foundation, 28, 1, pp. 97-99, (2014)
  • [10] Yin G., Li G., Wei Z., Et al., Experimental research on dynamic characteristics of fine grained tailings, Proceedings of Forum on New Advances in Mining Science and Technology of Metal Mine, pp. 63-65, (2006)
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