Assigning resistivity values to rock quality designation indices using integrated unmanned aerial vehicle and 2D electrical resistivity tomography in granitic rock
Rock quality designation (RQD) is a standard technique in mining and geotechnical investigation for quantifying the quality and degree of jointing of the rock mass. However, the need for expeditious and inexpensive geotechnical site characterization is the prime motivation for modifying RQD. This re...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2024-01-01
|
| Series: | Geocarto International |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/10106049.2024.2343019 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850108184213061632 |
|---|---|
| author | Muhammad Junaid Rini Asnida Abdullah Kamal Abdelrahman Arshad Ullah Sajid Mahmood Radzuan Sa'ari Amber Islam |
| author_facet | Muhammad Junaid Rini Asnida Abdullah Kamal Abdelrahman Arshad Ullah Sajid Mahmood Radzuan Sa'ari Amber Islam |
| author_sort | Muhammad Junaid |
| collection | DOAJ |
| description | Rock quality designation (RQD) is a standard technique in mining and geotechnical investigation for quantifying the quality and degree of jointing of the rock mass. However, the need for expeditious and inexpensive geotechnical site characterization is the prime motivation for modifying RQD. This research work integrates 2D Electrical Resistivity Tomography (2D ERT) and Unmanned Aerial Vehicle (UAV) conducted at Site 1 and Site 2. The UAV survey was performed to calculate RQD on the rock surface using volumetric Joint Counts (Jv) at Sites 1 and 2. A 2D ERT survey was conducted to obtain the corresponding subsurface resistivity values. Using k-nearest neighbours (k-NN), resistivity values were assigned to various RQD indices such as very poor rocks (<350 Ωm), poor rock (350–1150 Ωm), fair rock (1150–1850 Ωm), good rock (1850–2500 Ωm) and >2500 Ωm excellent rock. Based on the established correlation of RQD and resistivity, the subsurface rock mass quality at Site 1 was predominantly good and excellent rock, while at Site 2, poor rock was significantly reported. This research concluded that rock mass characterization using RQD is more rapid and inexpensive than the direct or indirect calculation of RQD. The combined 2D ERT and UAV deployed in this research study provide an environmentally non-destructive approach for slope stability assessment. |
| format | Article |
| id | doaj-art-8b91df22156e49ca97bc0392ac6499d4 |
| institution | OA Journals |
| issn | 1010-6049 1752-0762 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Geocarto International |
| spelling | doaj-art-8b91df22156e49ca97bc0392ac6499d42025-08-20T02:38:26ZengTaylor & Francis GroupGeocarto International1010-60491752-07622024-01-0139110.1080/10106049.2024.2343019Assigning resistivity values to rock quality designation indices using integrated unmanned aerial vehicle and 2D electrical resistivity tomography in granitic rockMuhammad Junaid0Rini Asnida Abdullah1Kamal Abdelrahman2Arshad Ullah3Sajid Mahmood4Radzuan Sa'ari5Amber Islam6Department of Sustainable Advanced Geomechanical Engineering (SAGE), National University of Sciences and Technology (NUST), Risalpur, PakistanFaculty of Civil Engineering, Universiti Teknologi Malaysia, Skudai, MalaysiaDepartment of Geology and Geophysics, College of Science, King Saud University, Riyadh, Saudi ArabiaDepartment of Geotechnics and Transportation, National University of Sciences and Technology, Islamabad, PakistanDepartment of Construction Engineering Management, National University of Sciences and Technology, Islamabad, PakistanFaculty of Civil Engineering, Universiti Teknologi Malaysia, Skudai, MalaysiaFaculty of Civil Engineering, Universiti Teknologi Malaysia, Skudai, MalaysiaRock quality designation (RQD) is a standard technique in mining and geotechnical investigation for quantifying the quality and degree of jointing of the rock mass. However, the need for expeditious and inexpensive geotechnical site characterization is the prime motivation for modifying RQD. This research work integrates 2D Electrical Resistivity Tomography (2D ERT) and Unmanned Aerial Vehicle (UAV) conducted at Site 1 and Site 2. The UAV survey was performed to calculate RQD on the rock surface using volumetric Joint Counts (Jv) at Sites 1 and 2. A 2D ERT survey was conducted to obtain the corresponding subsurface resistivity values. Using k-nearest neighbours (k-NN), resistivity values were assigned to various RQD indices such as very poor rocks (<350 Ωm), poor rock (350–1150 Ωm), fair rock (1150–1850 Ωm), good rock (1850–2500 Ωm) and >2500 Ωm excellent rock. Based on the established correlation of RQD and resistivity, the subsurface rock mass quality at Site 1 was predominantly good and excellent rock, while at Site 2, poor rock was significantly reported. This research concluded that rock mass characterization using RQD is more rapid and inexpensive than the direct or indirect calculation of RQD. The combined 2D ERT and UAV deployed in this research study provide an environmentally non-destructive approach for slope stability assessment.https://www.tandfonline.com/doi/10.1080/10106049.2024.2343019Rock quality designationelectrical resistivity tomographyaerial surveyk-nearest neighbourgraniteslope stability |
| spellingShingle | Muhammad Junaid Rini Asnida Abdullah Kamal Abdelrahman Arshad Ullah Sajid Mahmood Radzuan Sa'ari Amber Islam Assigning resistivity values to rock quality designation indices using integrated unmanned aerial vehicle and 2D electrical resistivity tomography in granitic rock Geocarto International Rock quality designation electrical resistivity tomography aerial survey k-nearest neighbour granite slope stability |
| title | Assigning resistivity values to rock quality designation indices using integrated unmanned aerial vehicle and 2D electrical resistivity tomography in granitic rock |
| title_full | Assigning resistivity values to rock quality designation indices using integrated unmanned aerial vehicle and 2D electrical resistivity tomography in granitic rock |
| title_fullStr | Assigning resistivity values to rock quality designation indices using integrated unmanned aerial vehicle and 2D electrical resistivity tomography in granitic rock |
| title_full_unstemmed | Assigning resistivity values to rock quality designation indices using integrated unmanned aerial vehicle and 2D electrical resistivity tomography in granitic rock |
| title_short | Assigning resistivity values to rock quality designation indices using integrated unmanned aerial vehicle and 2D electrical resistivity tomography in granitic rock |
| title_sort | assigning resistivity values to rock quality designation indices using integrated unmanned aerial vehicle and 2d electrical resistivity tomography in granitic rock |
| topic | Rock quality designation electrical resistivity tomography aerial survey k-nearest neighbour granite slope stability |
| url | https://www.tandfonline.com/doi/10.1080/10106049.2024.2343019 |
| work_keys_str_mv | AT muhammadjunaid assigningresistivityvaluestorockqualitydesignationindicesusingintegratedunmannedaerialvehicleand2delectricalresistivitytomographyingraniticrock AT riniasnidaabdullah assigningresistivityvaluestorockqualitydesignationindicesusingintegratedunmannedaerialvehicleand2delectricalresistivitytomographyingraniticrock AT kamalabdelrahman assigningresistivityvaluestorockqualitydesignationindicesusingintegratedunmannedaerialvehicleand2delectricalresistivitytomographyingraniticrock AT arshadullah assigningresistivityvaluestorockqualitydesignationindicesusingintegratedunmannedaerialvehicleand2delectricalresistivitytomographyingraniticrock AT sajidmahmood assigningresistivityvaluestorockqualitydesignationindicesusingintegratedunmannedaerialvehicleand2delectricalresistivitytomographyingraniticrock AT radzuansaari assigningresistivityvaluestorockqualitydesignationindicesusingintegratedunmannedaerialvehicleand2delectricalresistivitytomographyingraniticrock AT amberislam assigningresistivityvaluestorockqualitydesignationindicesusingintegratedunmannedaerialvehicleand2delectricalresistivitytomographyingraniticrock |