Pipeflow response in loess‐derived soils to precipitation and groundwater table fluctuations in a temperate humid climate

Vannoppen, Wouter; Verachtert, Els; Poesen, Jean

doi:10.1002/hyp.11049

Cited by 13 publications

(9 citation statements)

References 49 publications

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“…This phenomenon, which can have both natural and anthropic origin, depends on various factors such as the lithological and structural nature of the subsoil, the waterproof urban surface connected with the hydrography characteristics, the increasing "urbanization" of the subsoil (undergrounds and tram lines, underground utilities, drainage system, etc. ), the weather phenomena, the subsoil hydrogeological nature and its interaction with the mentioned factors (Waltham et al 2005;Kaufmann 2014; Vannoppen et al 2017;Bernatek-Jakiel and Poesen 2018;Bovi et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Geophysical surveys integrated with rainfall data analysis for the study of soil piping phenomena occurred in a densely urbanized area in eastern Sicily

Patti

Grassi

Morreale³

et al. 2021

Nat Hazards

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The occurrence of strong and abrupt rainfall, together with a wrong land use planning and an uncontrolled urban development, can constitute a risk for infrastructure and population. The water flow in the subsoil, under certain conditions, may cause underground cavities formation. This phenomena known as soil piping can evolve and generate the surface collapse. It is clear that such phenomena in densely urbanized areas represent an unpredictable and consistent risk factor, which can interfere with social activities. In this study a multidisciplinary approach aimed to obtain useful information for the mitigation of the risks associated with the occurrence of soil piping phenomena in urban areas has been developed. This approach is aimed at defining the causes of sudden soil subsidence events, as well as the definition of the extension and possible evolution of these instability areas. The information obtained from rainfall data analysis, together with a study of the morphological, geological and hydrogeological characteristics, have allowed us to evaluate the causes that have led to the formation of soil pipes. Furthermore, performance of 3D electrical resistivity surveys in the area affected by the instability have allowed us to estimate their extension in the subsoil and identifying the presence of further areas susceptible to instability.

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Section: Introductionmentioning

confidence: 99%

Geophysical surveys integrated with rainfall data analysis for the study of soil piping phenomena occurred in a densely urbanized area in eastern Sicily

Patti

Grassi

Morreale³

et al. 2021

Nat Hazards

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show abstract

“…During the past 40 yr, research has demonstrated the important contribution of natural soil pipes to water transfer (Jones, ). With very few exceptions, wherever the piping process has been observed there is evidence that it contributes significantly to watershed hydrology (Carey & Woo, ; Chappell, ; Holden & Burt, ; Jones, , , ; Smart et al., ; Uchida, Kosugi, & Mizuyama, ; Vannoppen, Verachtert, & Poesen, ; Wilson et al., ). However, despite these studies, the origin and hydrological functioning of soil pipes is not yet fully understood, in particular in the specific context of loess‐derived soils (Vannoppen et al., ).…”

Section: Introductionmentioning

confidence: 99%

Characterizing soil piping networks in loess‐derived soils using ground‐penetrating radar

Got

Bielders

Lambot

2020

Vadose Zone Journal

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Soil piping remains a relatively unexplored phenomenon despite its substantial impacts on water and sediment transfer at the watershed scale at numerous locations around the world. One of the main limitations regarding the study of this singular process is the characterization of the pipe networks (in terms of number, position, dimensions, and connectivity of pipes). In this context, noninvasive subsurface imaging using ground-penetrating radar (GPR) has proven to be a promising technique. This study used two three-dimensional (3D), high-resolution GPR surveys performed in loess-derived soils to characterize small pipe networks with little prior information about their location. The adopted methodology relies on high spatial resolution scanning, 3D subsurface imaging, and automated detection of reflection hyperbolas using a 200-MHz center-frequency antenna. Two small watersheds affected by piping were investigated at Sippenaeken and Kluisbergen (Belgium). Over the two scanned zones, results revealed significant subsurface continuous patterns. Even though the most obvious patterns corresponded to recent or past anthropic activities (e.g., artificial drainage pipes), validation tests confirmed that the chosen methodology can be used for pipe network characterization because some important continuity patterns were related to soil piping: for instance, a fairly small pipe (approximately 10-15 cm in diameter) was detected and validated for more than 100 m. Nevertheless, the high variability in size, depth, and orientation of the pipes imply that GPR may only be truly efficient when using very high spatial resolution scanning, which limits its application to specific conditions not always met in piped areas.

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“…However, water plays a crucial role in the development of soil pipes. Groundwater table fluctuation (Vannoppen et al, 2017) and subsurface flow obstruction due to mass movement (Verachtert et al, 2013) controls the soil piping. The infiltration of water and percolation into deeper soil horizons depends on the characteristics physical properties of the soil which controls the erosion rate and piping mechanism Nadal-Romero et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Joint geomorphological and geophysical (electrical resistivity) investigation for the configuration of soil pipe

Borah

Gond

RAJAN

et al. 2022

Contrib. Geophys. Geod.

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Soil piping is a complex mechanism of subsurface soil erosion, which results underground conduits (cave/tunnel) of varying dimensions. Soil piping associates with severe consequences, such as land subsidence and land slide. Therefore, the investigation of soil pipe is crucial. However, the study of soil pipe is challenging unless characteristic surficial evidences of the pipe are available. Based on the surficial evidences, soil pipe can be configured with geophysical techniques which in-turn aid in designing precursory measures. Therefore, in the present study, we carried out a combined geomorphological and geophysical investigation to configure the soil pipe at Kinanoor village, Kasaragod, Kerala, India. Based on the vital geomorphological information, we carried out resistivity survey and configured an underground soil pipe of diameter ∼6.5 to 7 m that is seated ∼3 m beneath the surface. This hollow pipe is underlain by the only accessible road of that locality which makes the road vulnerable for transportation. Therefore, a bridge like structure is recommended to construct at the pipe location to stabilize the risk factor. Since the study area is situated on a fringe-slope, the geomorphological investigation points out that the disturbance in natural course of the drainage system and the accumulation of water in the up-slope area due to the man-made activities might act as potential causes for the piping in the area. Therefore, it is suggested not to disturb the natural course of the drainage which may lead to subsidence of the area in future.

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Pipeflow response in loess‐derived soils to precipitation and groundwater table fluctuations in a temperate humid climate

Cited by 13 publications

References 49 publications

Geophysical surveys integrated with rainfall data analysis for the study of soil piping phenomena occurred in a densely urbanized area in eastern Sicily

Geophysical surveys integrated with rainfall data analysis for the study of soil piping phenomena occurred in a densely urbanized area in eastern Sicily

Characterizing soil piping networks in loess‐derived soils using ground‐penetrating radar

Joint geomorphological and geophysical (electrical resistivity) investigation for the configuration of soil pipe

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