快速冲填尾矿库静力液化分析与数值模拟

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Abstract An elastoplastic constitutive model considering static liquefaction of tailings sand was proposed in the framework of critical state soil mechanics. The constitutive model was embedded into the software FLAC to simulate the static liquefaction phenomena of tailings pond. The predicted results from the numerical simulation of undrained triaxial tests using the proposed model have a good agreement with the experimental data of samples of sand-silt mixtures，which proved the capability of the model to describe the mechanical response of tailings sand. A typical case of liquefaction of tailings dams were chosen to validate the proposed model. The simulated results of the case show that the static liquefaction can happen in certain areas of the pond and serious failure of flowing sliding may occur with the rising of pore water pressure under the condition of high depositing rate.

Key words： soil mechanics tailings pond static liquefaction high depositing rates numerical simulation

Received: 18 June 2013

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https://rockmech.whrsm.ac.cn/EN/Y2014/V33/I6/1158

[1] SEED B，LEE K L. Liquefaction of saturated sands during cyclic loading[J]. Journal of Soil Mechanics and Foundations Division，1966，92(6)：105–134. [2] ISHIRAHA K，TATSUKA F，YASUDA S. Undrained deformation and liquefaction of sand under cyclic stress[J]. Soils and Foundations，1975，15(1)：29–44. [3] ISHIRAHA K. Liquefaction and flow failure during earthquakes[J]. Géotechnique，1993，43(3)：351–451. [4] ZIENKIEWICZ O C，SHIOMO T. Dynamic behavior of porous media：the generalized Biot formulation and its numerical solution[J]. International Journal for Numerical and Analytical Methods in Geomechanics，1984，8(1)：71–96. [5] 徐志英，沈珠江. 尾矿高堆坝地震反应的综合分析与液化计算[J]. 水利学报，1983，(5)：30–39.(XU Zhiying，SHEN Zhujiang. The comprehensive analysis and liquefaction computing of high tailings dam under seismic loading[J]. Journal of Hydraulic Engineering，1983，(5)：30–39.(in Chinese)) [6] 周健. 尾矿坝在地震作用下的三维两相有效应力动力分析[J]. 工程抗震，1995，(1)：39–53.(ZHOU Jian. The analysis of tailings dam?s effective stress with three dimensional two phase under seismic loading[J]. Earthquake Resistant Engineering，1995，(1)：39–53.(in Chinese)) [7] 张建民，王刚. 砂土液化后大变形的机制[J]. 岩土工程学报，2006，28(7)：835–840.(ZHANG Jianmin，WANG Gang. Mechanism of large post-liquefaction deformation in saturated sand[J]. Chinese Journal of Geotechnical Engineering，2006，28(7)：835–840.(in Chinese)) [8] 孔宪京，潘建平，邹德高. 尾矿坝液化流动变形分析[J]. 大连理工大学学报，2008，48(4)：541–545.(KONG Xianjing，PAN Jianping，ZOU Degao. Analysis of liquefaction-induced flow deformation of tailings dam[J]. Journal of Dalian University of Technology，2008，48(4)：541–545.(in Chinese)) [9] JAMES M，AUBERTIN M，WIJEWICKREME D，et al. A laboratory investigation of the dynamic properties of tailings[J]. Canadian Geotechnical Journal，2011，48(11)：1 587–1 600. [10] DAVIES M P，MCROBERTS E C，MARTIN T E. Static liquefaction of tailings-fundamentals and case histories[C]// Proceedings of Tailings Dams 2002，ASDSO. Los Vegas：[s. n.]，2002：233–255. [11] MARTIN T E，MCROBERTS E C. Some considerations in the stability analysis of upstream tailings dams[C]// Proceedings of the Sixth International Conference on Tailings and Mine Waste?99. Fort Collins，Colorado：[s. n.]，1998：287–302. [12] DAVIES M P，MARTIN T E，LIGHTHALL P C. Tailings dam stability: essential ingredients for success[C]// Proceedings of Slope Stability in Surface Mining，Metallurgy and Exploration，Inc.(SME). [S. l.]：[s. n.]，2000：365–378. [13] FOURIE A B，BLIGHT G E，PAPAGEORGIOU G. Static liquefaction as a possible explanation for the Merriespruit tailings dam failure[J]. Canadian Geotechnical Journal，2001，38(4)：707–719. [14] 门永生. 我国尾矿库安全现状及事故防治措施[J]. 中国安全生产科学技术，2009，5(1)：48–52.(MEN Yongsheng. The current safety situation of tailings reservoir in China and preventive measures[J]. Journal of Safety Science and Technology，2009，5(1)：48–52.(in Chinese)) [15] VERDUGO R，ISHIHARA K. The steady state of sandy soils[J]. Soils and Foundations，1996，36(2)：81–91. [16] YAMAMURO J A，LADE P V. Steady-state concepts and static liquefaction of silty sands[J]. Journal of Geotechnical and Geoenvironmental Engineering，1998，124(9)：868–877. [17] MRÓZ Z，BOUKPETI N，DRESCHER A. Constitutive model for static liquefaction[J]. International Journal of Geomechanics，2003，3(2)：133–144. [18] BOUKPETI N，DRESCHER A. Triaxial behavior of refined superior sand model[J]. Computers and Geotechnics，2000，26(1)：65–81. [19] LADE P V，YAMAMURO J A. Evaluation of static liquefaction potential of silty sand slopes[J]. Canadian Geotechnical Journal，2011，48(2)：247–264. [20] ANDERSON C D，ELDRIDGE T L. Critical state liquefaction assessment of an upstream constructed tailings sand dam[C]// Proceedings of the 14th International Conference on Tailings and Mine Waste. [S. l.]：[s. n.]，2012：101–112. [21] BEDIN J，SCHNAID F，DAFONSECA A V，et al. Gold tailings liquefaction under critical state soil mechanics[J]. Géotechnique，2012，62(3)：263–267. [22] 蔡嗣经，张栋，何理. 地震中尾矿库液化失稳机制及数值模拟研究[J]. 有色金属科学与工程，2011，2(2)：1–6.(CAI Sijing，ZHANG Dong，HE Li. On the liquefying-destabilizing mechanism of tailings reservoir caused by earthquake and its numerical modeling[J]. Nonferrous Metals Science and Engineering，2011，2(2)：1–6.(in Chinese)) [23] 唐建新，尹光志，魏作安，等. 龙都尾矿库细粒尾矿堆坝模型试验研究[J]. 中国矿业，2004，13(1)：54–56.(TANG Jianxin，YI Guangzhi，WEI Zuo?an，et al. Model test study about fine grained tailings dam of Longdu tailings pond[J]. China Mining Magazine，2004，13(1)：54–56.(in Chinese)) [24] YIN G Z，LI G Z，WEI Z A，et al. Stability analysis of a copper tailings dam via laboratory model tests：a Chinese case study[J]. Minerals Engineering，2011，24(2)：122–130. [25] 俞培基，秦蔚琴. 尾矿砂的静力液化特性评价[J]. 勘察科学技术，1993，(4)：24–28.(YU Peiji，QIN Weiqin. Assessment of static liquefaction characteristics of tailings sand[J]. Site Investigation Science and Technology，1993，(4)：24–28.(in Chinese)) [26] 王余庆，辛鸿博. 中国尾矿坝地震安全度(12)：用稳态理论评价大石河尾矿坝的液化与稳定[J]. 工业建筑，1995，(5)：21–25.(WANG Yuqing，XIN Hongbo. Earthquake safty of chinese tailings dam(12)：steady-state strength analysis on liquefaction and stability of the Dashihe tailings dam[J]. Industrial Construction，1995，(5)：21–25.(in Chinese)) [27] 中华人民共和国国家标准编写组. GB50547—2010 尾矿堆积坝岩土工程技术规范[S]. 北京：中国建筑工业出版社，2010.(The National Standards Compilation Group of People?s Republic of China. GB50547—2010 Technical code for geotechnical engineering of tailings embankment[S]. Beijing：China Architecture and Building Press，2010.(in Chinese)) [28] CHANG C S，HICHER P Y. An elasto-plastic model for granular materials with microstructural consideration[J]. International Journal of Solids and Structures，2005，42(14)：4 258–4 277. [29] KONISHI Y，HYODO M，ITO S. Compression and undrained shear characteristics of sand-fines mixtures with various plasticity[J]. Journal of Geotechnical and Geoenvironmental Engineering，2007，63(4)：1 142–1 152. [30] YANG S L. Characterization of the properties of sand-silt mixtures[Ph. D. Thesis][D]. Trondheim，Norway：Norwegian University of Science and Technology，2004. [31] BYRNE P M，ROBERTSON P K，PLEWES H D，et al. Liquefaction event planning[C]// Proceedings of 48th Canadian Geotechnical Conference. Vancouver：[s. n.]，1995：341–352. [32] ROBERTSON P K，WRIDE C E，LIST B R，et al. The Canadian liquefaction experiment：an overview[J]. Canadian Geotechnical Journal，2000，37(3)：499–504. [33] VAID Y P，UTHAYAKUMAR M，SIVATHAYALAN S，et al. Laboratory testing of syncrude sand[C]// Proceedings of the 48th Canadian Geotechnical Conference. Vancouver：[s. n.]，1995：223–232.