Evaluation of optimized depth of waterproof curtain to mitigate negative impacts during dewatering

Wang, Xuwei; Yang, Tianliang; Xu, Ye‐Shuang; Shen, Shui‐Long

doi:10.1016/j.jhydrol.2019.123969

Cited by 87 publications

(28 citation statements)

References 60 publications

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“…After being pulled out, the anchor collapsed with the soil mass due to the forces induced by the movement of the soil mass. Jet mixing the anchor piles is another option that would have helped to control the deformation and ensure the stability of the retaining wall [24][25][26]. The distance between each pile could have been reduced to allow for more stability.…”

Section: Discussionmentioning

confidence: 99%

“…This phenomenon resulted in the deformation of the retaining wall and could also provide a possible explanation as to why the leaking water pipes went unnoticed. Thus, a dewatering system should have been installed to pump out the groundwater and the leaked water from the pipe system, as dewatering is a useful technique for prevention of large deformation and failure [9,24,26,[28][29][30]. Therefore, from a technical aspect, a supporting system (retaining pile, anchor, bracing support), dewatering system, and soil properties should be considered in an optimized way [15,31,32].…”

Section: Discussionmentioning

confidence: 99%

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Foundation Pit Collapse on 8 June 2019 in Nanning, China: A Brief Report

Chin

Shen

Zhou³

2019

Safety

Self Cite

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This short communication reports on the recent incident of a foundation pit collapse at a construction site on 8 June 2019 in Nanning City of Guangxi Province, China. There were no injuries or casualties reported for this incident. This report presents the incident background, management measures taken after the incident, and a brief discussion of the causes of the incident. Some mitigation measures are suggested to prevent similar incidents in the future based on the preliminary analysis.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Foundation Pit Collapse on 8 June 2019 in Nanning, China: A Brief Report

Chin

Shen

Zhou³

2019

Safety

Self Cite

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“…Waterlogging in the study area is generally distributed in the low depressions, that is, between elevations of 1092 m$1109 m. Waterlogging generally emerges in the intersects of Renminguangchangxi Street and Helanshanzhong Road, Renminguangchuangdong Streen and Kangping Road, Renminguangchuangxi Street and Shanghaixi Road, Renminguangchuangdong Street and Zhenshui Lane, and Ningan Avenue and Fengyue Lane. Waterlogging is also affected by the local drainage system (Wang et al 2019). Comparing Figure 6 with Figure 5, heavy waterlogging mostly emerges in the aged drainage pipelines in the study area because the aged pipelines were constructed before several decades with low construction criterion and confluence drainage system of rainwater and sewage.…”

Section: Spatial Analysis Of Water Accumulation Of Urban Surfacementioning

confidence: 99%

Spatial simulation of rainstorm waterlogging based on a water accumulation diffusion algorithm

Hou

2020

Geomatics, Natural Hazards and Risk

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This study presents a water accumulation diffusion algorithm to spatially simulate rainstorm-induced waterlogging for people's lives and property safety. Taking part of Jinfeng District in Yinchuan City, China, as a study area, a storm water management model (SWMM) model is constructed with the aid of geographic information system (GIS) and remote sensing (RS) technologies. GIS is used to divide subcatchments, generalize drainage system, set parameters, construct spatial geodatabase, and identify flood extents and depths. RS is used to obtain land-use/land-cover information. The water accumulation diffusion algorithm is then designed using the strategies of the dynamic interactions between pipes and surface and between central pixel and its neighbourhood pixels to transform water accumulation volume of sub-catchment into the submerged range and water accumulation depth. Positions, extents, depths, and volumes of water accumulation from pipe network and surface are simulated, respectively. The spatial simulation precisions of rainstorm waterlogging from the pipe network and surface are verified according to the measured and cyber rainstorm data, respectively. The results show that (1) the number of water accumulation nodes increases with the increase of rainfall intensity; (2) urban waterlogging is mainly distributed in the intersects of roads, low depressions and the aged drainage networks; and (3) spatial simulation of urban rainstorm waterlogging based on the GIS, RS, and SWMM techniques and the water accumulation diffusion algorithm is reliable. The results can provide decision-makings to predict rainstorm waterlogging, design drainage network, and construct a sponge city. ARTICLE HISTORY

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“…The unit weight of soil increased significantly when it was saturated with water, resulting in an increase in the sliding force. Concurrently, the pore water pressure increased, significantly reducing the soil shear strength resulting in a reduction in the sliding resistance [19,20]. Finally, a catastrophic landslide occurred when the sliding force exceeded the sliding resistance.…”

Section: Rainfallmentioning

confidence: 99%

A Brief Report of Pingdi Landslide (23 July 2019) in Guizhou Province, China

et al. 2019

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This short communication reports on a large landslide with a movement of 2 million m3 of soil and rock that occurred on 23 July, 2019 in the village of Pingdi, located in the county of Shuicheng, Guizhou Province, China. This landslide resulted in 42 deaths and 9 missing people. This report describes the preliminary investigation, rescue effort, and possible cause. The total rainfall in the 6 days prior to the landslide was 189.1 mm, which may be held responsible as the major cause. Some recommendations are proposed to reduce human casualties and property losses.

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Evaluation of optimized depth of waterproof curtain to mitigate negative impacts during dewatering

Cited by 87 publications

References 60 publications

Foundation Pit Collapse on 8 June 2019 in Nanning, China: A Brief Report

Foundation Pit Collapse on 8 June 2019 in Nanning, China: A Brief Report

Spatial simulation of rainstorm waterlogging based on a water accumulation diffusion algorithm

A Brief Report of Pingdi Landslide (23 July 2019) in Guizhou Province, China

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