Doctoral Dissertations
Keywords and Phrases
CCR; Electrical resistivity tomography; Karst; Multichannel analysis of surface waves; Seepage; Solid waste landfill
Abstract
"The safe containment of coal combustion residual (CCR) in landfills was addressed by the U.S. Environment Protection Agency (EPA) CCR rule published in 2015. The new rule affects new and existing U.S. based CCR landfills in terms of implementing safeguard systems for safe disposal and contamination control. Electrical resistivity tomography (ERT) and multichannel analysis of surface waves (MASW) data were acquired across and in proximity to a CCR landfill in southwest Missouri, USA, with the intent to identify potential karst features and seepage pathways.
Electrical resistivity tomography data were acquired using an automated 8-channel resistivity meter and multichannel analysis of surface waves data were acquired using a 24-channel Seistronix engineering seismograph and 4.5 Hz geophones. MASW data were acquired to aid the ERT data interpretation by providing engineering properties of subject materials. The outcome from the ERT survey were a suite of 2D and 3D resistivity images. ERT investigates the subsurface to a depth of approximately 100 ft. The outcome from the MASW survey were a suite of 1-D and 2-D (depth vs. shear wave velocity) profiles. MASW investigates the subsurface to a depth of approximately 100 ft. The variations in top-of-rock, variations in moisture content of the CCR, soil and bedrock, and seepage pathways and flow patterns, were successfully mapped.
The findings of this research indicate that the seepage pathways in close proximity to the landfill are from surface run-off and do not pose a threat to groundwater, and no evidence of karst features that could affect the structure stability of the CCR landfill in close proximity to and underneath the site was found"--Abstract, page iii.
Advisor(s)
Anderson, Neil L. (Neil Lennart), 1954-
Committee Member(s)
Rogers, J. David
Sneed, Lesley
Torgashov, Evgeniy V.
Maerz, Norbert H.
Department(s)
Geosciences and Geological and Petroleum Engineering
Degree Name
Ph. D. in Geological Engineering
Publisher
Missouri University of Science and Technology
Publication Date
Fall 2018
Pagination
xii, 118 pages
Note about bibliography
Includes bibliographic references (pages 111-117).
Geographic Coverage
Missouri
Rights
© 2018 Ruobai Zhao, All rights reserved.
Document Type
Dissertation - Open Access
File Type
text
Language
English
Thesis Number
T 11662
Electronic OCLC #
1139709441
Recommended Citation
Zhao, Ruobai, "Delineation of a coal combustion residue landfill and underlying karst subsurface in Southwest Missouri using ERT and MASW surveys" (2018). Doctoral Dissertations. 2857.
https://scholarsmine.mst.edu/doctoral_dissertations/2857
