Field Investigation and Prediction of Responses of Far-Field Ground and Groundwater to Pumping Artesian Water in Deep Excavations

Shi, Yingtang; Li, Ming-Guang; Zhang, Yangqing; Li, Jiong; Wang, Jianhua

doi:10.1061/(asce)gm.1943-5622.0001252

Cited by 12 publications

(4 citation statements)

References 42 publications

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“…Model tests and a numerical procedure are presented by Kheradi et al (2019) to investigate the effectiveness of ground improvement for strengthening pile foundation against buckling due to seismic loading. Shi et al (2018) proposes a simplified method for prediction of farfield groundwater drawdown and surface settlement induced by dewatering. Mishra and Patra (2019) study consolidation by accounting for variable permeability and non-Darcy flow using a finite-difference procedure for prediction of dissipation of excess pore water pressure, settlement of piles, down drag, and shear stresses in floating piles.…”

mentioning

confidence: 99%

Soft Soil and Related Geotechnical Engineering Practice

2019

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confidence: 99%

Soft Soil and Related Geotechnical Engineering Practice

2019

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“…Pumping will reduce the pore pressure and increase the effective stress, resulting in soil consolidation [9][10][11]. On the contrary, injecting will reduce the effective stress and lead to soil swelling [12][13][14]. Liu et al analyzed the stress paths of aquitard in association with discharge and recharge, they introduced the influence zone of recharge on relieving vertical deformation [15].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Recharge Schemes for Deep Excavation in the Confined Water-Rich Stratum

Zhang

Meng

et al. 2023

Sustainability

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With the excavation of a metro station in a confined water-rich stratum as our background, the sensitivity of four typical recharge parameters is analyzed by using numerical simulation. Based on the orthogonal analysis method, an optimal recharge scheme was obtained. The results show that the main influential factors of ground settlement and groundwater recovery are recharge pressure and recharge depth. The main influential factor of retaining structure deformation and influence radius of recharge is the distance between the recharge wells and the foundation pit. For the groundwater recharging of a deep excavation in the water-rich confined area of Jinan, China, the optimal effect can be achieved when setting recharge wells with a depth of 50 m arranged in a line with a spacing of 10 m at a horizontal distance of 20 m away from the retaining wall and recharge pressure is 40 kPa. With the same construction difficulty, the maximum settlement in optimized scheme decreased 71.19%, the flux of groundwater recovery increased 11.96%, the maximum horizontal displacement of the wall decreased 15.61%, and the influence radius of recharge enlarged 8.62% compared to original scheme.

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“…The underlying stability analyses (e.g., triggering and failure mechanisms) are extremely complicated under the coupled effects of hydraulic uplift and re-excavation. (Cashman & Preene, 2003;Zhou et al, 2010;Wu et al, 2016;Shi et al, 2018;Zhang et al, 2018). For PIP excavations involved in this system, catastrophic failures have been worldwide reported because of hydraulic uplift (Chow & Ou, 1999;Liu et al, 2011;Ng et al, 2012;Hong & Ng, 2013;Pujades et al, 2014;Hong et al, 2015;Hong & Wang, 2016;Zhang et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Moore and Longworth (1979) carried out the field measurement to observe the construction process of deep excavations in Oxford clays above a confined aquifer. Shi et al (2018) investigated the far-ground response of groundwater to pumping artesian water in deep excavations. Although field observations generally require alarge number of resources (material, equipment, and manpower), they are limited in reporting the triggering mechanisms of base instability of deep excavations.…”

Section: Introductionmentioning

confidence: 99%