Seismic behavior of underground station and surface building interaction system in earth fissure environment

Xiong, Zhongming; Wang, Yongwei; Chen, Xuan; Xiong, Weiyang

doi:10.1016/j.tust.2020.103778

Cited by 11 publications

(3 citation statements)

References 21 publications

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“…A GF is a type of geological disaster that occurs following the fracture of rock and soil [5,6]. Ground subsidence disasters pose an enormous threat to underground engineering, surface construction, and the safety and properties of human life [7][8][9]. Land subsidence in coastal areas or around lakes is also prone to causing disasters such as waterlogging and flooding due to the loss of elevation [10,11].…”

Section: Introductionmentioning

confidence: 99%

“…Tectonic factors such as faults, earthquakes, basements, basins and sediments affect the formation and development of surface deformation to a great extent, while non-tectonic factors [15,16] such as the over-exploitation of groundwater, rainfall conditions and climate also have a great impact on the breeding process of land subsidence. The inducing factors of ground fissures can be divided into three categories [5,9,16,17]-they are: (1) internal dynamic action, such as fault creep, earthquakes and volcanic eruptions; (2) extraction of underground fluids, such as water, oil and gas; (3) semiarid climates. Based on the ground fissures found in China, the main causes of such disasters are mainly tectonic activities and groundwater exploitation.…”

Section: Introductionmentioning

confidence: 99%

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Monitoring of Land Subsidence and Ground Fissure Activity within the Su-Xi-Chang Area Based on Time-Series InSAR

Yang

Hou

et al. 2022

Remote Sensing

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Serious land subsidence and ground fissure (GF) disasters have brought huge economic losses to the Su-Xi-Chang area (China) and threatened the safety of its residents. To better understand the development of these disasters, it is urgent to carry out long-term and large-scale deformation monitoring in this region. In this study, based on time-series interferometric synthetic aperture radar (InSAR) technology, ground deformation characteristics were obtained at different periods. Meanwhile, Fast Lagrangian Analysis of Continua in Three Dimensions (FLAC3D) was used to study the stress, seepage field, and displacement changes in the soil layers caused by pumping activities at the bedrock bulge. The results showed that three subsidence centers were located in Suzhou, Wuxi, and Changzhou from 2007 to 2010. The ground fissures in Guangming village had obvious differential settlements and intense activities. The land subsidence in the Su-Xi-Chang area was under control from 2018 to 2021, while there was a relative rebound in most areas. Combined with numerical simulation and geological data, we demonstrated that pumping activities would accelerate and intensify the land subsidence process, and differential subsidence was prone to occur at the buried hill, which in turn led to the formation of ground fissures. By comparing the characteristics of ground deformation in different periods, it was proven that banning groundwater exploitation is an effective measure for preventing and controlling such disasters.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Monitoring of Land Subsidence and Ground Fissure Activity within the Su-Xi-Chang Area Based on Time-Series InSAR

Yang

Hou

et al. 2022

Remote Sensing

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“…Different studies for particular site conditions such as bedrock [10] and slopes [11] have revealed that the response patterns of irregular terrain sites in earthquakes are significantly different. Among them, earth fissures are a extremely significant engineering and geological issues, and many researchers and scholars have produced preliminary results revealing that the earth fissure site in Xi'an, China has potential dynamic amplification effects based on numerical simulations and physical model tests [12][13][14][15]. However, it is difficult for the existing results to provide a reference for the seismic fortification of earth fissure sites with special genesis types such as bedrock buried hills.…”

Section: Introductionmentioning

confidence: 99%

Land Use Sustainability: Assessment of the Dynamic Response of Typical Bedrock-Buried-Hill Earth Fissure Sites in the Su-Xi-Chang Area

Cao,

Deng,

et al. 2024

Sustainability

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Disaster prevention and the mitigation of earth fissures is a key issue in the sustainable development of urban land. Structures directly avoiding earth fissures are not conducive to the rational planning and efficient utilization of urban construction. The Su-Xi-Chang area, which consists of the cities of Suzhou, Wuxi, and Changzhou, surrounded by Taihu Lake, has developed bedrock buried-hill earth fissures that are rare in the rest of the country. Existing research results have identified the genesis mechanisms, distribution patterns, and developmental characteristics of this type of fissure. Not only does the slow-variable activity of earth fissures cause direct damage to surface and underground structures, but in addition, when an earthquake occurs, the presence of earth fissures may cause the seismic response of the site to be altered or even strengthened, leading to unknown damage or the possible destruction of structures near the fissures. However, no studies have been conducted to assess the dynamic effects of bedrock-buried-hill earth fissure sites. Therefore, in this research, based on six typical bedrock-buried-hill-type earth fissures in the Su-Xi-Chang area, and in order to accurately reveal the dynamic amplification effect law of the earth fissure sites, systematic spectral analyses and comparisons of the microtremor signals were carried out by using the linear analysis method (Direct Fourier Transform Analysis) and the nonlinear analysis method (Hilbert–Huang Transform). The results show that bedrock-buried-hill-type earth fissures have a significant amplification effect on the dynamic response of the site; the amplification effect of bedrock-buried-hill fissure sites follows the same attenuation pattern, and the furthest range of the dynamic response on the site is about 25 m, beyond which the original seismic fortification level can be maintained; the extreme value of the amplification factor of the two sides of this type of site, as derived from the Fourier and HHT methods, is about double, and the nearest earth fissure region should be considered to have a raised seismic fortification intensity of more than double the original. The Hilbert–Huang transform method has good applicability for processing microtremor data, and nonlinear signal analysis methods can be considered comprehensive for future microtremor signal processing.

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Numerical investigation on the three-dimensional isolation of a subway station intersecting a ground fissure

Chen,

Xiong,

Chen

et al. 2023

Computers and Geotechnics

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Seismic behavior of underground station and surface building interaction system in earth fissure environment

Cited by 11 publications

References 21 publications

Monitoring of Land Subsidence and Ground Fissure Activity within the Su-Xi-Chang Area Based on Time-Series InSAR

Monitoring of Land Subsidence and Ground Fissure Activity within the Su-Xi-Chang Area Based on Time-Series InSAR

Land Use Sustainability: Assessment of the Dynamic Response of Typical Bedrock-Buried-Hill Earth Fissure Sites in the Su-Xi-Chang Area

Numerical investigation on the three-dimensional isolation of a subway station intersecting a ground fissure

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