Estimation of hydraulic conductivity by using pumping test data and electrical resistivity data in faults zone

Lu, Dawei; Huang, Dan; Xu, Cundong

doi:10.1016/j.ecolind.2021.107861

Cited by 19 publications

(10 citation statements)

References 52 publications

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“…The constant-rate pumping test is one of the most commonly used methods in groundwater-resource investigations to estimate aquifer parameters, providing average values of K representative of a relatively large volume of the aquifer (Butler, 2005;Lu et al, 2021). This was apparent at Magilligan where, due to the homogeneity of the aquifer, the range of variation in K estimates made from the constant-rate pumping test proved the lowest among all the methods (Table 5).…”

Section: Discussionmentioning

confidence: 99%

Comparison of saturated hydraulic conductivity estimated by empirical, hydraulic and numerical modelling methods at different scales in a coastal sand aquifer in Northern Ireland

Águila

McDonnell

Flynn

et al. 2022

Preprint

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Hydraulic conductivity (K) is one of the most challenging hydrogeological properties to appropriately measure due to its dependence on the measurement scale and the influence of heterogeneity. This paper presents a comparison of saturated hydraulic conductivities determined for a quasi-homogeneous coastal sand aquifer, estimated using eight different methodologies, encompassing empirical, hydraulic and numerical modelling methods. The geometric means of K, determined using 22 methods, spanning measurement scales varying between 0.01 m and 100 m, ranged between 3.6 and 58.3 m/d. K estimates from Cone Penetration Test (CPT) data proved wider than those obtained using the other methods, while various empirical equations, commonly used to estimate K from grain-size analysis and Tide-Aquifer interaction techniques revealed variations of up to one order of magnitude. Single-well tracer dilution tests provided an alternative for making preliminary estimates of K when hydraulic gradients were known. Estimates from the slug tests proved between 1.2 and 1.6 times larger than those determined from pumping tests which, with one of the smallest ranges of variation, provided a representative average K of the aquifer as revealed by numerical modelling. By contrast, variations in K with depth could be detected at small scales (~0.1 m). Hydraulic Profiling Tool (HPT) system data indicated that K decreases with depth, which was supported by the numerical model results. No scale effect on K was apparent when considering the ensemble of results, suggesting that hydraulic conductivity estimates do not depend on the scale of measurement in the absence of significant aquifer heterogeneities.

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Section: Discussionmentioning

confidence: 99%

Comparison of saturated hydraulic conductivity estimated by empirical, hydraulic and numerical modelling methods at different scales in a coastal sand aquifer in Northern Ireland

Águila

McDonnell

Flynn

et al. 2022

Preprint

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“…Among the field methods, aquifer hydraulic test may be performed by slug test [9], injecting water into well [10], pumping test [11], [12], geo-electrical measurement, vertical electrical sounding [13], Ground Penetrating Radar [14], magnetic resonance sounding [15], and also a combination of any of these methods [16], [17]. Semi-empirical approach, such as grain size distribution data and the empirical relationship has also been used [18], [19].…”

Section: Introductionmentioning

confidence: 99%

“…Field tests are a more reliable technique if proper conditions are met, the limitations of analytical techniques are considered, and proper corrections are made [23], [6]. Among the field test methods, the pumping test is the most common and accurate and can give an aggregate value of hydraulic properties [16]. Pumping test is the only method that provides simultaneous information on the hydraulic behavior of the well, the reservoir and the reservoir boundaries [12].…”

Section: Introductionmentioning

confidence: 99%

“…[20] noted that the transmissivity (T) values obtained by slug tests were more than the pump test values for low T value, and they varied from very negligible values up to a factor of three (3) for the higher T values. In a combination approach, Lu et al [16] firstly determined hydraulic conductivity of the aquifer by pumping test and the values were fitted using the ERT (electrical resistivity tomography) and used to determine aquifer resistivity at the respective positions. Pumping test data is suitable means [28], [29] and the best way to find out aquifer characteristics (transmissibility and hydraulic conductivity) for the management of groundwater resources [30], [31].…”

Section: Introductionmentioning

confidence: 99%

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Estimating Hydraulic Conductivity, Transmissibility and Specific Yield of Aquifer in Barind Area, Bangladesh Using Pumping Test

Ali¹,

Zaman²,

Biswas³

et al. 2022

EJGEO

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Reliable hydraulic parameters values are essential and crucial basic data for potential groundwater withdrawal (aquifer yield) and also for sustainable groundwater management. They are also essential for simulation model study for different management scenario analyses. The laboratory test has limitations, while in situ tests produce representative aquifer parameters. The pumping test method is the only method that provides simultaneous information on the hydraulic behavior of the well, the aquifer, and the aquifer boundaries. Pumping tests were performed to determine aquifer hydraulic properties such as hydraulic conductivity (K), transmissibility (T), and specific yield (Sy) at two Upazilas of the Barind area, namely Nachol and Niamatpur. The aquifer formation is composed of layers: upper fine sand, medium sand, a conductive sand layer, and lower fine sand at the bottom, below which the impervious clay layer exists. The K was determined through Dupit’s steady radial flow equation, T through Theis’s and Copper-Jacob approach, and Sy through Copper-Jacob and gravity drainage of aquifer materials. The mean K, T, and Sy were found as 30.3 m3/m2/day, 756.7 m3/m/day, and 4.6%, respectively for the Nachol location; and 52.7 m3/m2/day, 1027.3 m3/m/day and 6.6%, respectively for Niamatpur location. The values obtained are supported by regional values reported earlier, and also by other locations’ values situated elsewhere having similar aquifer materials. To achieve long-term sustainability in the studied locations, withdrawal of groundwater resources should be optimized considering the aquifer hydraulic properties values.

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“…The Vertical Electrical Sounding (VES) technique is one of the traditional 1D electrical resistivity techniques that is useful and efficient in groundwater exploration [7]. In recent decades, several studies have been carried out successfully to determine the essential hydraulic parameters based on electrical resistivity measurements for specific aquifers [8][9][10][11]. The advantage of this method is based on the acceptable spatial resolution either vertically and laterally in comparison with the hydrogeological parameters derived from hydrogeological measurements, such as pump tests and observations of hydraulic heads.…”

Section: Introductionmentioning

confidence: 99%

Hydrogeophysical Study of Sub-Basaltic Alluvial Aquifer in the Southern Part of Al-Madinah Al-Munawarah, Saudi Arabia

2021

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Groundwater is extremely important in a water-scarce country such as Saudi Arabia, where permanent surface water resources are absent. Sustainable and future developments plans are essentially relying on the clear understanding of water resources. To evaluate the water resources in arid countries, the groundwater should be quantified through either traditional or scientifically advanced techniques. Aquifer characteristics, particularly the hydraulic conductivity and transmissivity, are essential for the evaluation the aquifer properties as well as the management and development of groundwater modelling for specific aquifers. The present study aims to evaluate the sub-basaltic alluvial aquifer in the northern part of Harrat Rahat, south of Al-Madinah city, and then estimates the principal aquifer’s hydraulic parameters based on the interpreted 1D resistivity-depth models along the study area. For that, 49 Vertical Electrical Soundings (VES’s) utilizing a Schlumberger electrode array were performed along the southern part of Al-Madinah city. The resistivity of the water-bearing formation, thickness, porosity, hydraulic conductivity, and transmissivity parameters were calculated along the measured longitudinal profile from the interpreted VES data. The estimated porosity, hydraulic conductivity, and transmissivity were achieved along the whole profile with average values of 0.2, 3.5 m/day, and 369.6 m2/day, respectively. The resulting transmissivity values from the VES models were compared with those of previous pumping test measurements carried out in the area and a reasonable correlation between the two data sets was observed. These results indicate that surface geoelectrical resistivity techniques may provide an alternative, rapid, and cost-effective method of estimating the aquifer hydraulic parameters where pumping data is rare or unavailable.

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Estimation of hydraulic conductivity by using pumping test data and electrical resistivity data in faults zone

Cited by 19 publications

References 52 publications

Comparison of saturated hydraulic conductivity estimated by empirical, hydraulic and numerical modelling methods at different scales in a coastal sand aquifer in Northern Ireland

Comparison of saturated hydraulic conductivity estimated by empirical, hydraulic and numerical modelling methods at different scales in a coastal sand aquifer in Northern Ireland

Estimating Hydraulic Conductivity, Transmissibility and Specific Yield of Aquifer in Barind Area, Bangladesh Using Pumping Test

Hydrogeophysical Study of Sub-Basaltic Alluvial Aquifer in the Southern Part of Al-Madinah Al-Munawarah, Saudi Arabia

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