Abstract
In order to explore the stability characteristics of hydropower station slope under different working conditions under seismic action, the three-dimensional dynamic finite element method was used to analyze the working conditions of the hydropower station slope under the seismic load with a probability of exceeding 5% in 50 years, 2% in 100 years, and 1% in 100 years in the reference period, through comparing the dynamic response characteristics and the stability of the slope under different seismic load were obtained. The results showed that under the influence of different earthquake loads, the ground motion response of the slope would increase with the increase of the peak value of the excited ground motion, and all would be forced to vibrate according to the vibration form of the excited ground motion; compared with the amplification effect of the slope on the displacement, the amplification effect of the slope on the acceleration was more obvious, this phenomenon was more obvious when the slope was under the action of an earthquake load with a probability of exceeding 1% within 100 years of the reference period; with the increase of seismic load, the possibility of bedding sliding and failure of the slope surface would be greater; when the three types of seismic loads act on the slope respectively, the other surfaces of the slope would generate instantaneous tensile stress, but they were less than the tensile strength of the slope rock mass. When the slope was under rare ground motion with a 100-year exceeding probability of 1% and 2%, the maximum relative dynamic displacement was about 5 cm, and the slope was sufficient to withstand the test of strong ground motion; for the other two seismic conditions, when the slope was under the action of an earthquake load with a probability of exceeding 1% within 100 years of the reference period, the damage effect of the slope near the empty surface under the action of the earthquake was more obvious than that of the center of the slope.
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References
Biondi G, Massimino MR, Maugeri M (2015) Experimental study in the shaking table of the input motion characteristics in the dynamic SSI of a SDOF model. Bull Earthq Eng 13(6):1835–1869
Ding JH, Wang L, Deng H, Fan YS, Tu GX (2018) Influence from dominant structural plane of a hydropower station on Lancangjiang River on instability failure of rock slope. Water Resour Hydropower Eng 49(2):144–151 (in Chinese)
Ding HG, Zhang YJ, Chen MB et al (2019) Analysis and treatment research of landslide. Constr Technol 48(S1):1100–1103 (in Chinese)
Fan ZP, Zhang LH (2010) Stability analysis of slope under earthquake action. Geotech Eng Tech 24(01):32–35 (in Chinese)
Fan XY, Zhang YY, Yang JR (2012) Developmental characteristics and influence factors of landslides in Wenchuan earthquake. J Nat Disasters 1:128–134(in Chinese)
Guo SS, Li DY (2013) The effect of dynamic elastic modulus changes on the dynamic response of arch dams. J China Inst Water Resour Hydropower Res. 11(2):125–129 (in Chinese)
Huang X (2020) Finite element study of the influence of horizontal and vertical sake on the slope stability. Soil Eng Found 34(1):69–72 (in Chinese)
Pan JW, Zhang CH, Xu YJ (2010) The influence of strong earthquake input method and foundation model on gravity dam response. Chin J Geotech Eng 32(1):82–87 (in Chinese)
Ping TQ, Luo XQ, Zheng AX (2015) Stability under seismic loading Analysis of influence of cracks on rock slope. Rock Soil Mech 36(2):600–606 (in Chinese)
Shen B, Tang H, Wu ZJ (2016) Dynamic stability evaluation and reinforcement effect analysis of high-steep rock slope under earthquake. China Rural Water Hydropower(6):182–186,189 (in Chinese)
Wen SC, Huang ZJ H W (2016) Reliability analysis of soil high slope stability under strong seismic condition. Chin J Solid Mech 37(S1):16–22 :(in Chinese)
Xue Y, Zhu YQ, Yin JY et al (2012) Analysis on seismicity periods of Great Earthquakes in Japan. Earthquake 32(3):67–77 (in Chinese)
Yang DX (2019) Comprehensive study on landslide susceptibility evaluation and seismic effect before and after earthquake in Qiaojia County, Yunnan Province. Kunming University of Science and Technology, Kunming (in Chinese)
Zeng R, Jiang MS, Sun LK et al (2018) Toppling failure mechanism of rock slope induced by heavy rainfall:a case study of the Zhaojiayan Rockfall in Western Hubei. Chin J Geol Hazard Control 29(3):12–17 (in Chinese)
Zhan ZF, Qi SW, He NW, Zheng BW, Ge CF (2019) Shaking table test study on homogeneous rock slope model under strong earthquake. J Eng Geol 27(5):946–954 (in Chinese)
Acknowledgements
This work was supported by the National Natural Science Foundation of China (51774199) and Excellent Talents Fund Program of Higher Education Institutions of Liaoning Province (No. LR2018053).
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Wang, Z., Li, B. Comparative Study on the Stability of Hydropower Station Slope Under Different Earthquake Conditions. Geotech Geol Eng 39, 4511–4521 (2021). https://doi.org/10.1007/s10706-021-01780-5
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DOI: https://doi.org/10.1007/s10706-021-01780-5