Large differential land subsidence and earth fissures in Jiangyin, China

Wang, G. Y.; You, Greg; Shi, Bin; Wu, Shengzhi; Wu, Jian

doi:10.1007/s12665-009-0430-9

Cited by 10 publications

(6 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…distributes along the NE direction and locates in the northern research area, which is the core area of surface subsidence with subsidence depth of more than 3 m and basically distributes along the uplift of the buried bedrocks ( Figure 1) (Liu 2011). Taking Changjing of Wuxi as an example, their shallow seismic lines indicate a good relation between the earth fissures and the uplift of bedrocks, which have buried depth between 105 and 152 m, in the NE direction (Wang et al 2010). Above the bedrocks, there are various alluvial layers of hard plastic silty clays, clays and sands.…”

Section: Distributionmentioning

confidence: 99%

Experimental study on Su-Xi-Chang earth fissures induced by repeated groundwater pumping and impounding

Peng

2019

Geomatics, Natural Hazards and Risk

View full text Add to dashboard Cite

Surface subsidence and fissures, especially surface fissures, are typical geological disasters related to groundwater activities in the Su-Xi-Chang area, China. In this study, we first analysed the geologic background and hydraulic features of earth formation in the area and constructed a physical model and its related experimental system in the laboratory. Based on the model and the system, we further experimentally studied and theoretically analysed the mechanism of ground fissure formation. The results showed that development of the earth fissures obviously undergoes the following stages. First, under self-gravity, the soil (artificial sand) layers in the model box with larger void ratios are gradually compacted, leading to uneven surface subsidence. Second, although the excess pore-water pressure could cause the surface to rise locally and macroscopically, water impounding on the aquifer lowers the friction among sand grains to certain degree depending on the strength of seepage in the horizontal direction, resulting in surface deformation and subsidence. Third, strong water pumping instantaneously releases excess pore-water pressure, resulting in soil consolidation in the vertical direction. Therefore, repeated groundwater impounding and pumping together with unique geological conditions lead to the formation of earth fissures in the Su-Xi-Chang area.

show abstract

Section: Distributionmentioning

confidence: 99%

Experimental study on Su-Xi-Chang earth fissures induced by repeated groundwater pumping and impounding

Peng

2019

Geomatics, Natural Hazards and Risk

View full text Add to dashboard Cite

show abstract

“…It is a typical geological formation in which the second confined aquifer buried is widely distributed and has a high water yield, which led to the large-scale development and utilization of groundwater resources in 1970. The long-term overexploitation of groundwater and the sharp decline in the water level resulted in severe land subsidence in the Su-Xi-Chang area, and an earth fissure was subsequently formed [6].…”

Section: Structurementioning

confidence: 99%

“…The direction of the two main cracks is the same, and the main fracture zone is distributed in the NE direction where the earth fissure situation is the most serious. F8 once crossed a nine-story building of the local Shuangping group and destroyed it [6]. Subsequent investigation found that the old site had been completely demolished, but the earth fissure was still active.…”

Section: Earth Fissures In Chaqiao (F6 1992)mentioning

confidence: 99%

“…In order to prevent earth fissure disasters, there has been some research into the development and distribution of bedrock-buried-hill-type earth fissures, analyzing their activity characteristics, genesis mechanisms, formation, and evolution. Static subsidence and the deformation of earth fissures have been identified as topics for study, and many consensus results have been achieved [4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

View full text Add to dashboard Cite

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.

show abstract

“…Such occurrences have been documented worldwide, that the reports concentrate in southeastern US (Arizona, California, Idaho, Nevada, Texas and Utah) [1,4,5]; China, in the provinces on the lower Yellow River basin (Shaanxi, Shanxi, northern Henan, Hebei, Shandong, Jiangu and Anhui) [6][7][8], and in Shanghai [9]; Thailand in Bangkok [10]; Italy in Venice [11]; and central México in the cities of Aguascalientes, Celaya [12,13], Irapuato, Mexico City [14], Morelia [2,3,15]; Querétaro [16] and Salamanca [17,18].…”

Section: Introductionmentioning

confidence: 99%

Depreciation factor equation to evaluate the economic losses from ground failure due to subsidence related to groundwater withdrawal

Hernández-Madrigal¹,

Muñiz-Jáuregui²,

Garduño‐Monroy³

et al. 2014

View full text Add to dashboard Cite

Subsidence due to groundwater withdrawal is a complex hydrogeological process affecting numerous cities settled on top of fluviolacustrine deposits. The discrete spatial variation in the thickness of these deposits, in combination with subsidence due to groundwater withdrawal, generates differential settlements and aseismic ground failure (AGF) characterized by a welldefined scarp. In cities, such AGF causes severe damages to urban infrastructure and considerable economic impact. With the goal of arriving to a general criterion for evaluating the economic losses derived from AGF, in the present work we propose the following equation: EL i = PV i *DF i. Where PV i is the value of a property "i", and DF i is a depreciation factor caused by structural damages of a property "i" due to AGF. The DF i is calculated empirically through:

show abstract

Large differential land subsidence and earth fissures in Jiangyin, China

Cited by 10 publications

References 21 publications

Experimental study on Su-Xi-Chang earth fissures induced by repeated groundwater pumping and impounding

Experimental study on Su-Xi-Chang earth fissures induced by repeated groundwater pumping and impounding

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

Depreciation factor equation to evaluate the economic losses from ground failure due to subsidence related to groundwater withdrawal

Contact Info

Product

Resources

About