Characterization of karst conduits by tracer tests for an artificial recharge scheme

Cen, Xinyu; Xu, Mei; Qi, Jihong; Qiang, Zhang; Shi, Haoxin

doi:10.1007/s10040-021-02398-w

Cited by 8 publications

(5 citation statements)

References 56 publications

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“…The multi-peaked BTC is considered as a resemble of anastomoses (or channeled) of the conduits and/or conduit networks (i.e., auxiliary conduits) along which advective transport is often the dominant mechanism (Figure 4) (e.g., Cen et al, 2021;Goldscheider et al, 2008;Deleu et al, 2023;Dewaide et al, 2018). 3 The current status of solute transport modelling in karst water resources…”

Section: Spreading Dilution and Reactive Mixingmentioning

confidence: 99%

“…But, as we have often poor understanding about the complicated physical, chemical, and (biogeo)chemical processes, a special care is required for the representation of the karst transport dynamics in the (selected) model structure with the adequate numerical formulation and parameters. From a modelling point of view, however, the representations of multiple processes at differing spatiotemporal scales under a broad range of karstic environmentsin which different transport problems might be encounteredwith the similar model structures is neither possible nor enough to realistically simulate the karst transport dynamics (e.g., Chang et al, 2017Chang et al, , 2021Cen et al, 2021;Hublart et al, 2015;Makropoulos et al, 2008;Massmann et al, 2005, among many others). For this reason, the overall success in the robust model selection is attributed to the 'right' choice of the key process that predominantly controls the karst system's hydrological and/or physicochemical behaviors by the available data (Hartmann et al, 2013a(Hartmann et al, , 2018.…”

Section: System Conceptualization Considering Data Collection and Sys...mentioning

confidence: 99%

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Karst water resources in a changing world: Review of solute transport modelling approaches

Çallı,

Chiogna,

Bittner

et al. 2024

Preprint

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Karst water resources are valuable freshwater sources for around 10 % of the world population. Nonetheless, anthropogenic factors and global changes have been seriously deteriorating the karst water quality and dependent ecosystems. Solute transport models are powerful tools to monitor, control, and manage the water quality and dependent ecosystem functioning. By representing and predicting the spatiotemporal behavior of solute migration in karst systems, the transport models enhance our understanding about the karst transport processes, thus enabling us to explore contamination risks and potential outcomes. This paper reviews the current state of knowledge on the modelling of solute transport processes in karst aquifers, thereby unveiling the fundamental challenges underlying a successful karst transport modelling. We discuss to what extent and in what ways we can handle these challenges and derive the key challenges and directions for reliable modelling of transport processes in karst systems in the present context of global changes.

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Section: Spreading Dilution and Reactive Mixingmentioning

confidence: 99%

Section: System Conceptualization Considering Data Collection and Sys...mentioning

confidence: 99%

Karst water resources in a changing world: Review of solute transport modelling approaches

Çallı,

Chiogna,

Bittner

et al. 2024

Preprint

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show abstract

“…The main methods of reservoir leakage detection include abnormal flow field analysis, borehole geophysical exploration, the seismic surface wave method, GIS, hydrochemical analysis, the tracer test, and other geophysical methods [5][6][7][8][9][10][11]. Among these, the groundwater tracer test represents a crucial methodology for elucidating flow systems, and is extensively applied in hydrogeological surveys and the identification of leakage within the hydraulic structures [12]. The tracer test is a detection method that places a source of material including solid particles, solutes, gases, and physical parameters like temperature and pressure [13], that can move with groundwater in a certain part of the groundwater system, and detect it at the expected location.…”

Section: Introductionmentioning

confidence: 99%

Application of the Tracer Test in a Hydrogeological Survey for a Pumped Storage Power Station

Chen,

Zhang,

Chen

et al. 2024

Water

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In areas with complex hydrogeological conditions, the tracer test method is often used as an effective means in hydrogeological surveys. According to the results of tracer tests, hydrogeological parameters, including hydraulic gradient and permeability coefficient, fracture network leakage passages and their scale, and groundwater flow rate and direction can be quantitatively determined. This paper takes the upper reservoir of Yongxin Pumped Storage Power Station in Jiangxi Province as the research object, and focuses on the complex hydrogeological conditions of the upper reservoir. Three sets of tracer tests and multiple sets of single-hole flow rate and direction tests were conducted on the left and right banks of the reservoir and near surface gullies. The results showed that ZKS18 received tracers in all three tests, which indicates a close hydraulic connection between ZKS18 and the left bank, right bank, and surface gullies within the reservoir. Based on the single or multiple peak values of the tracer, it was determined that there are 1–6 leakage passages in the fractured rocks, with leakage passage sizes of 0.1–0.4 mm. According to the single-hole flow rate and flow direction tests, a self-developed instrument was used to determine the groundwater flow rate and flow direction at different depths in the test holes, which yielded results that were basically consistent with the results of the three-hole method. These results provide a basis for the use of tracer tests in hydrogeological surveys for water conservancy and hydropower engineering, and anti-seepage design of upper reservoirs.

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“…Probable flow paths of karst groundwater have been identified using detailed analysis of aquifer lithology, tectonic setting, tracer tests, and hydrogeological conditions such as changes in water levels and flow rates (Geyer et al 2007; White 2012; Cen et al 2021). Nevertheless, it can be difficult to obtain these types of data, because insufficient boreholes and difficult conditions for water resource protection occur in complex hydrogeological settings.…”

Section: Introductionmentioning

confidence: 99%

Control of Structural Landform Evolution on Karst Groundwater Cycle in a Large‐Scale Anticlinorium

Yang

et al. 2023

Groundwater

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Structural landform evolution and hydrogeochemical analyses are crucial for understanding the characteristics of karst groundwater systems and the development of deep karst formed by complex aquifers in a tectonic collision zone. Detailed structural landform evolution analysis was carried out along the large‐scale anticlinorium to investigate the temporal evolution of karst aquifer systems and karstification. Results showed that the tectonic activity included weak horizontal compression and slow vertical uplift during the Triassic to Middle Jurassic, forming a denuded clastic platform. This period was mainly preserved in the geological record as burial karst. From the Late Jurassic to the Early Cretaceous, the study area was strongly compressed by S–N‐trending stress, and developed E–W‐trending high‐angle imbricate thrust structures, which controlled the formation of folded and fault‐blocked mountains. Vertical multilayered strata underwent a strong horizontal extrusion, forming a large‐scale anticlinorium with secondary folds and faults. With the exposure of carbonate rocks due to rapid crustal uplift, karst began to develop, forming a vertical multilayer karst aquifer system and controlling the distribution of karst groundwater. The Fangxian faulted basin was formed from the Late Cretaceous to the Paleogene, whereby landforms were dominated by intermountain basins. Slow crustal uplift caused the retreat of the denudation line to the east, leading to an increase in hydrodynamic conditions and karstification, and the initiation of early karst groundwater systems. Since the Neogene, intermittent and rapid crustal uplift has led to the deepening of rivers, resulting in the formation of peak clusters and canyons, the development of deep karst, and the complete formation of karst groundwater systems. Combined with hydrogeochemical and borehole data, local, intermediate, and regional karst groundwater systems were identified. It has vital significance to the geological route selection or construction of deep‐buried tunnels and the utilization of karst groundwater.

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Characterization of karst conduits by tracer tests for an artificial recharge scheme

Cited by 8 publications

References 56 publications

Karst water resources in a changing world: Review of solute transport modelling approaches

Karst water resources in a changing world: Review of solute transport modelling approaches

Application of the Tracer Test in a Hydrogeological Survey for a Pumped Storage Power Station

Control of Structural Landform Evolution on Karst Groundwater Cycle in a Large‐Scale Anticlinorium

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