GPR based subsurface geotechnical exploration
- Title
- GPR based subsurface geotechnical exploration
- Creator
- Hebsur A.M.V.; Muniappan N.; Rao E.P.; Venkatachalam G.
- Description
- The Seismic refraction technique (SRT) and Electrical resistivity technique (ERT) have long been in use in geotechnical exploration. A relatively recent technique is Ground penetrating radar (GPR). The study presented in this paper is on GPR-aided geotechnical subsurface exploration. The usual method of exploration is drilling, which gives much-needed site-specific information, but is expensive and restricted to a few point locations. The possibilities of non-invasive investigation offered by GPR make it useful for supplementing geotechnical investigations. The present work describes GPR survey at a construction site in Mumbai. The objective was to derive subsurface logs from GPR signals. Conventionally, subsurface logging is done using boreholes. First, the extracted soil and rock samples are examined visually. Second, additional information such as Core recovery ratios (CRR), Rock quality designation (RQD) and Standard penetration test (SPT) N values are collected and strata are demarcated. In comparison, the amplitude variations of GPR signals may not correspond directly to variations of these physical properties with depth. However, the study shows that fairly good correlations do exist with the subsurface stratification and transformed signals.
- Source
- 28th Symposium on the Application of Geophysics to Engineering and Environmental Problems 2015, SAGEEP 2015, pp. 308-311.
- Date
- 2015-01-01
- Publisher
- Environmental and Engineering Geophysical Society (EEGS)
- Coverage
- Hebsur A.M.V., Vignan's Foundation for Science, Technology and Research University, Vadlamudi, Guntur, AP, India; Muniappan N., Christ University, Kengeri Campus, Bangaluru, KA, India; Rao E.P., IIT Bombay, Mumbai, Maharashtra, India; Venkatachalam G., IIT Bombay, Mumbai, Maharashtra, India
- Rights
- Restricted Access
- Relation
- ISBN: 978-151080248-3
- Format
- Online
- Language
- English
- Type
- Conference paper
Collection
Citation
Hebsur A.M.V.; Muniappan N.; Rao E.P.; Venkatachalam G., “GPR based subsurface geotechnical exploration,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 23, 2025, https://archives.christuniversity.in/items/show/21041.