Estimating soil suction from electrical resistivity

Piegari, E.; Maio, Rosa Di

doi:10.5194/nhess-13-2369-2013

Cited by 31 publications

(12 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Geophysical surveying techniques have proved to be highly useful as they supply fast, non-invasive and detailed evaluation of some physical quantities in large buried volumes to be investigated. In particular, the well-known dependence of electrical resistivity values on the soil water content suggests the geoelectrical method as one of the most suitable for studying the suction level as a function of electrical resistivity in the field [14,15]. Piegari and Di Maio [15] showed how this non-invasive method can be implemented for monitoring spatial variations of soil suction by using soil resistivity data derived from in situ electrical resistivity tomography surveys.…”

Section: Monitoring Plan and In Situ Investigation Program For The Si...mentioning

confidence: 99%

Monitoring activities for the preservation of an Etruscan hypogeum in unsaturated soil mass

et al. 2023

View full text Add to dashboard Cite

A geotechnical monitoring campaign and a site investigation have been recently planned and undertaken aiming at the preservation and protection of the “Palazzone” Etruscan necropolis, an archaeological site dated back to Hellenistic period located 4 km from the city of Perugia, along the southeastern margin of the hill where the town is settled. The site includes some beautiful and monumental cavities, among them, the Volumni Hypogeum. The majority of the graves are underground cavities excavated in partially saturated alluvial soil deposits. Their inspection reveals the geological features and the depositional structures. The groundwater table is located about 35 m below the ground surface. Due to the difficulties of soil-sampling inside the ancient cavities, only limited portions of the material were retrieved for conventional laboratory tests, although not enough for a geotechnical characterization. On the other hand, XRD analyses and MIP tests were performed. The obtained results allowed to recognize the relevant contribution of soil suction to the stability conditions of the lateral walls and the ceiling of the cavities, which is complementary to the weak cementation characterizing the soil mass. This important information supports the conservation strategy of the monument, which has as its primary tool the monitoring of environmental conditions, aimed at maintaining the unsaturated conditions of the soil mass.

show abstract

Section: Monitoring Plan and In Situ Investigation Program For The Si...mentioning

confidence: 99%

Monitoring activities for the preservation of an Etruscan hypogeum in unsaturated soil mass

et al. 2023

View full text Add to dashboard Cite

show abstract

“…4). The potential use of resistivity as a proxy for suction has been previously suggested (Piegari and Di Maio 2013). In the coming years, the relationship between these parameters will be investigated using preliminary PRIME and soil suction sensor data from unit 3.…”

Section: Soil Moisture Monitoringmentioning

confidence: 99%

Hydrogeological and geophysical properties of the very-slow-moving Ripley Landslide, Thompson River valley, British Columbia

et al. 2020

View full text Add to dashboard Cite

Landslides along a 10 km reach of Thompson River south of Ashcroft, British Columbia, have repeatedly damaged vital railway infrastructure, while also placing public safety, the environment, natural resources, and cultural heritage features at risk. Government agencies, universities, and the railway industry are focusing research efforts on a representative test site — the very-slow-moving Ripley Landslide — to manage better the geohazard risk in this corridor. We characterize the landslide’s form and function through hydrogeological and geophysical mapping. Field mapping and exploratory drilling distinguish 10 hydrogeological units in surficial deposits and fractured bedrock. Electrical resistivity tomography, frequency domain electromagnetic conductivity measurements, ground-penetrating radar, seismic pressure wave refraction, and multispectral analysis of shear waves; in conjunction with downhole measurement of natural gamma radiation, induction conductivity, and magnetic susceptibility provide a detailed, static picture of soil moisture and groundwater conditions within the hydrogeological units. Differences in electrical resistivity of the units reflect a combination of hydrogeological characteristics and climatic factors, namely temperature and precipitation. Resistive earth materials include dry glaciofluvial outwash and nonfractured bedrock; whereas glaciolacustrine clay and silt, water-bearing fractured bedrock, and periodically saturated subglacial till and outwash are conductive. Dynamic, continuous real-time monitoring of electrical resistivity, now underway, will help characterize water-flow paths, and possible relationships to independently monitor pore pressures and slope creep. These new hydrogeological and geophysical data sets enhance understanding of the composition and internal structure of this landslide and provide important context to interpret multiyear slope stability monitoring ongoing in the valley.

show abstract

“…Once a controlled AC or DC is applied to another pair of electrodes, the 2D image of the subsurface profile both in the deep and wide area of the soil layer is presented by Loke (1999), Hazreek et al (2015), and Syed and Zuhar (2010). Many researchers have identified the type of rock and soil via the resistivity and the electric potential difference in the soil layer (Palacky 1998;Syed and Zuhar 2010;Piegari and Maio 2013). Meanwhile, the values of ρ are overlapping among the different soil types (Kaufman and Hoekstra 2001); therefore, it is difficult to differentiate each of the soil types by using only one point in the soil layer.…”

Section: Introductionmentioning

confidence: 99%

Electrical resistivity survey for evaluating the undrained shear strength of soft Bangkok clay at some of the canal-side road investigation sites

Chaiyaput

Sutti²,

Suksawat³

et al. 2021

Bull Eng Geol Environ

View full text Add to dashboard Cite

A resistivity-undrained shear strength equation was proposed in this work to investigate the relationship between the undrained shear strength and electrical resistivity of soft Bangkok clay. The field vane shear and screw driving sounding tests were used to evaluate the undrained shear strength of the soft Bangkok clay from 10 field investigations of the canal-side roads. Meanwhile, the electrical resistivity was collected by the low-cost nondestructive resistivity survey method. The relationship between the measured resistivity corresponding to the undrained shear strength was expressed as a linear equation of S u = 7.061ρ with a high statistical correlation (96.20%) between the undrained shear strength and resistivity. The validation between the predicted undrained shear strength from the equation and the measured undrained shear strength from the field sites confirmed the statistically significant relation of data and the reliability of the proposed equation. By using this equation, it successfully predicted the undrained shear strength of the soft Bangkok clay at a depth of 4.00-10.00 m below the ground surface of canal-side roads (zones C, D, and E in the zonation map). The proposed new equation from the resistivity survey in this work, therefore, serves as an alternative tool to fast estimate the shear strength of soft soil in the large area for the preliminary evaluation of road construction.

show abstract

Estimating soil suction from electrical resistivity

Cited by 31 publications

References 34 publications

Monitoring activities for the preservation of an Etruscan hypogeum in unsaturated soil mass

Monitoring activities for the preservation of an Etruscan hypogeum in unsaturated soil mass

Hydrogeological and geophysical properties of the very-slow-moving Ripley Landslide, Thompson River valley, British Columbia

Electrical resistivity survey for evaluating the undrained shear strength of soft Bangkok clay at some of the canal-side road investigation sites

Contact Info

Product

Resources

About