基于地质力学模型试验的大岗山拱坝整体稳定性分析

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Abstract The geomechanical model test is an effective method to study the global stability of arch dams. The geomechanical model test on the arch dam with foundation reinforcement at Dagangshan in the similar scale of 250∶1 was conducted. The deformation and strength of jointed rock mass，the discontinuous structural surfaces and the reinforcement measures were simulated through the masonry technique of small blocks. The water load imposed on the dam surface was controlled by the hydraulic jacks. The strains and displacements were collected and saved automatically and effectively with a data acquisition system of high accuracy. The high water pressure method was employed for the overload failure test. The stress and displacement distributions of the scaled dam were obtained and the failure processes of the scaled dam and the abutment were explored. Three factors of the global overload safety K1，K2 and K3，were used to evaluate the global stability of dams. The comparative analysis between the geomechanical model test and the numerical simulation based on the deformation reinforcement theory indicated that the global stability of the arch dam at Dagangshan was relatively high. The weak areas controlling the global stability of the arch dam was located.

Key words： hydraulic engineering arch dam geomechanical model test masonry technique of small blocks numerical simulation global stability

Received: 08 November 2013

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https://rockmech.whrsm.ac.cn/EN/Y2014/V33/I5/971

[1] 周维垣，杨若琼，刘耀儒，等. 高拱坝整体稳定地质力学模型试验研究[J]. 水力发电学报，2005，24(1)：53–58.(ZHOU Weiyuan，YANG Ruoqiong，LIU Yaoru，et al. Research on geomechanical model of rupture tests of arch dam for their stability[J]. Journal of Hydroelectric Engineering，2005，24(1)：53–58.(in Chinese)) [2] ZHOU J，LIN G，ZHU T，et al. Experimental investigations into seismic failure of high arch dam[J]. Journal of Structural Engineering，2000，126(8)：926–935. [3] FISHMAN Y A. Features of shear failure of brittle materials and concrete structures on rock foundation[J]. International Journal of Rock Mechanics and Mining Sciences，2008，45(6)：976–992. [4] ZHU W S，LI Y，LI S C，et al. Quasi-three-dimensional physical model tests on a cavern complex under high in-situ stresses[J]. International Journal of Rock Mechanics and Mining Sciences，2011，48(2)：199–209. [5] ZHU W S，ZHANG Q B，ZHU H H，et al. Large-scale geomechanical model testing of an underground cavern group in a true three- dimensional(3D) stress state[J]. Canadian Geotechnical Journal， 2010，47(9)：935–946. [6] YU X，ZHOU Y F，PENG S Z. Stability analyses of dam abutments by 3D elasto-plastic finite-element method：a case study of Houhe gravity- arch dam in China[J]. International Journal of Rock Mechanics and Mining Sciences，2005，42(3)：415–430. [7] ALVAREZ M A. Mechanical models as compared with mathematics[C]// Proceedings of the International Colloquium on Geomechanical Model. Bergamo，Italy：ISRM，1979：149–151. [8] 杨强，刘耀儒，陈英儒，等. 变形加固理论及高拱坝整体稳定与加固分析[J]. 岩石力学与工程学报，2008，27(6)：1 121–1 136.(YANG Qiang，LIU Yaoru，CHEN Yingru，et al. Deformation reinforcement theory and global stability and reinforcement of high arch dam[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(6)： 1 121–1 136.(in Chinese)) [9] FUMAGALLI E. Statical and geomechanical model[M]. New York：Springer-Verlag/Wien，1973：1–180. [10] LEMOS J V，PINA C A B，COSTA C P，et al. Experimental study of an arch dam on a jointed rock foundation[C]// Proceedings of the 8th ISRM Congress. Tokyo，Japan：[s. n.]，1995：1 263–1 266. [11] LEMOS J V. Modelling of arch dams on jointed rock foundations[C]// Proceedings of ISRM International Symposium—EUROCK 96. Turin，Italy：[s. n.]，1996：519–526. [12] OLIVERIA S，FARIA R. Numerical simulation of collapse scenarios in reduced scale tests of arch dams[J]. Engineering Structures，2006，28(10)：1 430–1 439. [13] 周维垣，杨若琼，剡公瑞. 高拱坝稳定性评价的方法和准则[J]. 水电站设计，1997，13(2)：1–7.(ZHOU Weiyuan，YANG Ruoqiong，YAN Gongrui. Stability evaluation methods and criteria in designing large arch dams[J]. Design of Hydroelectric Power Station，1997，13(2)：1–7.(in Chinese)) [14] FEI WP，ZHANG L，ZHANG R. Experimental study on a geo- mechanical model of a high arch dam[J]. International Journal of Rock Mechanics and Mining Sciences，2010，47(2)：299–306. [15] 邵国建，卓家寿，章青. 岩体稳定性分析与评判准则研究[J]. 岩石力学与工程学报，2003，22(5)：691–696.(SHAO Guojian，ZHUO Jiashou，ZHANG Qing. Research on analysis method and criterion of rockmass stability[J]. Chinese Journal of Rock Mechanics and Engineering，2003，22(5)：691–696.(in Chinese)) [16] ZHANG G X，LIU Y，ZHOU Q J. Study on real working performance and overload safety factor of high arch dam[J]. Science in China：Series E，2008，51(Supp.2)：48–59. [17] JIN F，HU W，PAN J W，et al. Comparative study procedure for the safety evaluation of high arch dams[J]. Computers and Geotechnics，2011，38(3)：306–317. [18] LIU Y R，GUAN F H，YANG Q，et al. Geomechanical model test for stability analysis of high arch dam based on small blocks masonry technique[J]. International Journal of Rock Mechanics and Mining Sciences，2013，61：231–243. [19] LIU J，FENG X T，DING X L，et al. Stability assessment of the Three Gorges dam foundation，China，using physical and numerical modeling part I：physical model tests[J]. International Journal of Rock Mechanics and Mining Sciences，2003，40(5)：609–631. [20] DA SILVEIRA A F，AZEVEDO M C，ESTEVES FERREIRA M J，et al. High density and low strength material for geomechanical models[C]// Proceedings of the International Colloquium on Geomechanical Model. Bergamo，Italy：ISRM，1979：115–131. [21] 马芳平，李仲奎，罗光福. NIOS相似材料及其在地质力学相似模型试验中的应用[J]. 水力发电学报，2004，23(1)：48–51.(MA Fangping，LI Zhongkui，LUO Guangfu. NIOS model material and its use in geomechanical similarity model test[J]. Journal of Hydroelectric Engineering，2004，23(1)：48–51.(in Chinese)) [22] 韩伯鲤，陈霞龄，宋一乐，等. 岩体相似材料的研究[J]. 武汉水利电力大学学报，1997，30(2)：6–9.(HAN Bolin，CHEN Xialing，SONG Yile，et al. Research on similar material of rock mass[J]. Journal of Wuhan University of Hydraulic and Electric Engineering，1997，30(2)：6–9.(in Chinese)) [23] FUMAGALLI E. Stability of arch dam rock abutments[C]// Proceedings of the 1st ISRM Congress. Lisbon，Portugal：[s. n.]，1966：503–508. [24] 李仲奎，徐千军，罗光福，等. 大型地下水电站厂房洞群三维地质力学模型试验[J]. 水利学报，2002，(5)：31–36.(LI Zhongkui，XU Qianjun，LUO Guangfu，et al. 3D geomechanical model test forlarge-scale underground hydropower station[J]. Journal of Hydraulic Engineering，2002，(5)：31–36.(in Chinese)) [25] 杨强，薛利军，王仁坤，等. 岩体变形加固理论及非平衡态弹塑性力学[J]. 岩石力学与工程学报，2005，24(20)：3 704–3 712. (YANG Qiang，XUE Lijun，WANG Renkun，et al. Reinforcement theory considering deformation mechanism of rock mass and nonequilibrium elastoplastic mechanics[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(20)：3 704–3 712.(in Chinese)) [26] YANG Q，LIU Y R，CHEN Y R，et al. Deformation reinforcement theory and its application to high arch dams[J]. Science in China Series E，2008，51(Supp.2)：32–47.