Study on artificial recharge and well loss in confined aquifers using theoretical and back-analysis calculations of hydrogeological parameters from recharge and pumping tests

Cao, Jianran; Li, Qinghan; Cheng, Xuesong; Zheng, Gang; Ha, Da; Zeng, Chao-Feng

doi:10.1007/s10064-022-02988-2

Cited by 9 publications

(1 citation statement)

References 30 publications

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“…Zhang et al established a formula to evaluate recharge efficiency and they found that the drawdown rises with the increase of the injection rate [20]. Cao et al found that pressurized recharge is more efficient compared with natural recharge; it can effectively compensate for the loss of groundwater resources [21]. Zhang et al developed a laboratory seepage test device to study the influence of recharge well spacing on drawdown [22].…”

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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Section: Introductionmentioning

confidence: 99%