نتایج جستجو برای: soil subsidence

تعداد نتایج: 185226  

Journal: :Earth’s Future 2023

New York City faces accelerating inundation risk from sea level rise, subsidence, and increasing storm intensity natural anthropogenic causes. Here we calculate a previously unquantified contribution to subsidence the cumulative mass downward pressure exerted by built environment of city. We enforce that load distribution in multiphysics finite element model expected subsidence. Complex surface...

2014
Peter Damoah-Afari Xiao-li Ding Zhong Lu Zhiwei Li Makoto Omura

Many provinces in China including Shanghai, Tianjin, Jiansu, Hubei, Hangzhou, Suzhou, Changzhou, Cangzhou, and Jianxing (Deng and Ju, 1994; Ding et al., 2005; Hu et al., 2004; Xue et al., 2005; Yang et al., 2005) are subsiding owing to rapid development and urbanization. The cause identified with these subsidence phenomena has been mainly due to excessive withdrawal of groundwater (Chai et al.,...

ژورنال: علوم زمین 2018
Ali Saremi Amir Pouya Sarraf Hossien Sedghi Mahasa Roustaei Mojtaba Arjomandi

During recent years, groundwater exploitation and thereby decreasing hydraulic head in the compressible sedimentary aquifer which is placed in the district 19 of Tehran have been caused noticeable land subsidence. The land subsidence has been damaging the infrastructures which have been being built in the south of Tehran Basin, especially in the district 19 of Tehran. A finite-difference ground...

2008
M. Caudron M. Al Heib

This paper is focused on soil subsidence of small extend and amplitude caused by tunnel boring or the collapse of underground cavities, whether natural or man-made. The impact of the movements of the ground on existing structures is generally dramatic. It is therefore necessary to accurately predict these movements (settlements and horizontal extension or compression displacements). Even though...

2006
Yusen Dong Linlin Ge Hsing-Chung Chang

Differential SAR Interferometry (D-InSAR) is an effective tool in monitoring land subsidence because of its greater coverage area and better resolution of height change. A series of Japanese Earth Resources Satallite-1 (JERS-1) images from 1992 to 1998 has been used in monitoring the mine subsidence in the test site of this study, one of the important coal mining areas in China. D-InSAR procedu...

Journal: :Applied sciences 2022

High-speed railways are built in deep soft-soil foundations interlayered with hard materials. However, the layers cannot be penetrated by conventional foundation treatment. Moreover, project cost is sometimes prohibitive, which an issue for post-construction subsidence control. The bag grouting pile a special grouting-pile-reinforcement technique treating This paper conducted tests on Ningbo-Ta...

2004
Robert A. Morton

Field surveys and sediment cores were used to estimate marsh erosion and land subsidence at Madison Bay, a well-known wetland loss hot spot in coastal Louisiana. Former marshes of Madison Bay are under about 1 m of water. Nearly two-thirds of the permanent flooding was caused by rapid subsidence in the late 1960s, whereas the other third was caused by subsequent erosion. Subsidence rates near M...

Journal: :The Journal of bone and joint surgery. British volume 1989
J R Loudon M W Older

We compared the clinical outcome with femoral subsidence and radiographic changes in 102 patients at 9 to 13 years after low friction arthroplasty. In 92 cases with a satisfactory outcome there was an average of 2.3 radiological signs and mean subsidence of less than 5 mm. An unsatisfactory outcome was associated with 3.4 signs per film and with subsidence of more than 5 mm. The radiological si...

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