Seismic stability of a rock slope with discontinuities under rapid water drawdown and earthquakes in large-scale shaking table tests

Song, Danqing; Che, Ailan; Zhu, Chen; Ge, Xiurun

doi:10.1016/j.enggeo.2018.08.011

Cited by 60 publications

(17 citation statements)

References 29 publications

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“…It is widely reported that a lot of earth embankments or slopes were damaged during the past great earthquakes [1][2][3][4]. Numerous substantial landslides have been triggered by earthquakes and caused severe loss of property and life [5][6][7][8]. On 12 May 2008, the Wenchuan earthquake occurred in the Longmenshan tectonic zone in Sichuan Province, China, which epicenter was located at the eastern edge of Qinghai-Tibet Plateau [9,10].…”

Section: Introductionmentioning

confidence: 99%

Failure Mechanism of Rock Slopes under Different Seismic Excitation

Tang

Che

et al. 2021

Advances in Materials Science and Engineering

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In earthquake-prone areas, special attention should be paid to the study of the seismic stability of rock slope. Particularly, it becomes much more complicated for the rock slopes with weak structural surfaces. In this study, numerical simulation and the shaking table test are carried out to analyze the influence of seismic excitation and structural surface in different directions on dynamic response of rock slope. Huaping slope with bedding structural surfaces and Lijiang slope with discontinuous structural surfaces besides Jinsha River in Yunnan Province are taken as research objects. The results of numerical simulation and the model test both show that discontinuous structure surface has influence on the propagation characteristics of seismic wavefield. For Huaping slope, the seismic wavefield responses repeatedly between the bedding structural surface and slope surface lead to the increase of the amplification effect. The maximum value of seismic acceleration appears on the empty surface where terrain changes. Horizontal motion plays a leading role in slope failure, and the amplification coefficient of horizontal seismic acceleration is about twice that of vertical seismic acceleration. The failure mode is integral sliding along the bedding structural surface. For Lijiang slope, seismic acceleration field affected by complex structural surface is superimposed repeatedly in local area. The maximum value of seismic acceleration appears in the local area near slope surface. And the dynamic response of slope is controlled by vertical and horizontal motion together. Under the seismic excitation with an intense of 0.336 g in X direction and Z direction, the amplification coefficients of seismic acceleration of Lijiang slope are 3.23 and 3.18, respectively. The vertical motion leads to the cracking of the weak structural surface. Then, Lijiang slope shows the toppling failure mode under the action of horizontal motion.

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Section: Introductionmentioning

confidence: 99%

Failure Mechanism of Rock Slopes under Different Seismic Excitation

Tang

Che

et al. 2021

Advances in Materials Science and Engineering

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“…[24][25][26][27][28][29][30][31] The distribution and change of the stress field and displacement field in the slopes are complicated, which degrades the stability of the slopes. [32][33][34][35][36][37] In reality, the rock mass is in a combined stress state of prestatic load and dynamic disturbance, [38][39][40][41][42][43] which leads to a completely different mechanical response from the pure static or dynamic loading state of shallow rocks. It is difficult to give a reasonable explanation for the above failure phenomenon using the classical rock statics or dynamics theory based on shallow mining.…”

Section: Introductionmentioning

confidence: 99%

“…In the process of deep mining, high‐stress hard rock is generally subjected to blasting operations, mechanical shock earthquakes, overburden fracture, and other dynamic disturbances around the deep underground rock 24‐31 . The distribution and change of the stress field and displacement field in the slopes are complicated, which degrades the stability of the slopes 32‐37 . In reality, the rock mass is in a combined stress state of prestatic load and dynamic disturbance, 38‐43 which leads to a completely different mechanical response from the pure static or dynamic loading state of shallow rocks.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of the influence of structural planes on the mechanical properties of sandstone specimens under cyclic dynamic disturbance

Song

Chen

et al. 2020

Energy Science & Engineering

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In recent years, with the increasing demand for mineral deposit resources and continuous consumption of shallow resources, many mines are gradually entering the deep mining state so that open-pit mines on high and steep slopes can be excavated. 1-4 The ultra-deep mine of TauTona in South Africa is known to extend at least 3500 m. 5 The Asturian coal basin in Spain has already reached depths exceeding 4000 m. 6 According to statistical analysis using the protocol

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“…In particular, the construction of urban subways, superhigh-rise buildings, urban comprehensive pipe corridors, large transportation hubs, underground large commercial complexes, etc., has brought about foundation pit projects at increasingly larger scales and deeper depths (Li et al 2017;Zhang et al 2017;Li and Chen 2018;Zhang et al 2018;Xiang and Song 2020). Meanwhile, the environmental conditions around the foundation pit are increasingly sensitive, the construction period is increasingly long, and the design and construction are complicated and diverse (Zhang and Yan 2016;Song, Che, Zhu, et al 2018;Song, Che, Chen, et al 2018;Sun et al 2019). In addition, there are often municipal pipe networks, underground pipe corridors, subway stations, and other municipal facilities around urban foundation pit projects, such as the foundation pit of the Shanghai Hongqiao comprehensive transportation hub and the foundation pit of Shanghai Tower (Zheng and Jiao 2010;Tan and Wang 2013).…”

Section: Introductionmentioning

confidence: 99%

Monitoring analysis of influence of extra-large complex deep foundation pit on adjacent environment: a case study of Zhengzhou City, China

Song

Chen

Dong

et al. 2020

Geomatics, Natural Hazards and Risk

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Extra-large complex deep foundation pit excavation has an impact on the surrounding environment. The deformation characteristics of deep foundation pits were investigated during excavation, according to the temporal and spatial variations in displacement, using long-term on-site displacement monitoring. The results show that the deformation characteristics of the supporting structure and surrounding buildings can be divided into four stages: earth excavation, cushion construction, internal support removal and cushion completion. In the stages of earthwork excavation and support removal, the settlement deformation of the supporting pile roof, lattice column and adjacent ground is large, and cushion construction has a weakening effect on foundation pit deformation. In the stages of earthwork excavation, cushion construction and internal support removal, the nonuniform settlement between adjacent lattice columns increases the lattice column deformation, and the deformation of the foundation pit tends to be stable after the completion of the internal support. The foundation pit excavation mainly affects the settlement deformation of the adjacent pipe gallery, and its deformation increases rapidly in the early stage of earthwork excavation. Moreover, the influence degree of foundation pit excavation on the surrounding environment decreases with increasing distance from the excavation area.

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Seismic stability of a rock slope with discontinuities under rapid water drawdown and earthquakes in large-scale shaking table tests

Cited by 60 publications

References 29 publications

Failure Mechanism of Rock Slopes under Different Seismic Excitation

Failure Mechanism of Rock Slopes under Different Seismic Excitation

Experimental study of the influence of structural planes on the mechanical properties of sandstone specimens under cyclic dynamic disturbance

Monitoring analysis of influence of extra-large complex deep foundation pit on adjacent environment: a case study of Zhengzhou City, China

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