Doctoral Dissertations
Abstract
"Mapping discontinuities in rock cuts and measuring their orientations is crucial in assessing the stability of rock masses. This can be done usually using manual methods such as scanline or advanced techniques such as LIDAR. However, these methods are used only to map exposed discontinuities which may cause underestimation for slope stability. Accordingly, ground penetrating radar (GPR) has been recently used to detect such hidden discontinuities.
The used 400 MHz monostatic GPR antenna was significantly able to detect and map hidden subvertical joints within 4 m depths in five sandstone highways rock cuts and within 3 m depths in two ignimbrite highways rock cuts in the State of Missouri. Manual 2D migration was done to estimate, in 2D and 3D radiograms, "the slope face-perpendicular depths" which was measured from three coplanar etched points, "the three index points", at each rock cut surface to the corresponding points on each plane of the detected subvertical joints.
The orientations of the detected hidden joints were then determined based on the 3-point equation and using the calibrated LIDAR coordinates. Some of these measurements were confirmed by very close-results of field verification measurements. The results of this GPR-and-LIDAR based investigation demonstrate that our new proposed approach using these techniques is straightforward, understandable, and can be valuable in some rock engineering applications and rock cuts design in terms of the orientations of joints, in addition to the number of joint sets which may build a more clear view about the rock cut stability than before"--Abstract, page iii.
Advisor(s)
Rogers, J. David
Maerz, Norbert H.
Anderson, Neil L. (Neil Lennart), 1954-
Committee Member(s)
Cawlfield, Jeffrey D.
Awuah-Offei, Kwame, 1975-
Abdel Salam, Mohamed G.
Department(s)
Geosciences and Geological and Petroleum Engineering
Degree Name
Ph. D. in Geological Engineering
Publisher
Missouri University of Science and Technology
Publication Date
Summer 2012
Pagination
xx, 261 pages, maps
Note about bibliography
Includes bibliographical references (pages 249-260).
Rights
© 2012 Adnan Mohammed Aqeel, All rights reserved.
Document Type
Dissertation - Open Access
File Type
text
Language
English
Subject Headings
Ground penetrating radar -- Remote sensingOptical radar -- MissouriOptical radarRock mechanicsRock pressure -- MeasurementRock slopes
Thesis Number
T 10020
Print OCLC #
830375607
Electronic OCLC #
795706894
Recommended Citation
Aqeel, Adnan Mohammed, "Measuring the orientations of hidden subvertical joints in highways rock cuts using ground penetrating radar in combination with LIDAR" (2012). Doctoral Dissertations. 2022.
https://scholarsmine.mst.edu/doctoral_dissertations/2022