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Investigation of structures in tunnel overburdens by means of muon radiography
Journal of Instrumentation, 2022Abstract Cosmic ray muon radiography is a new imaging technique that is being used to investigate the density structure of large objects and the shallow crust. For example, it has been used to investigate magma conduits of active volcanoes, cavities above tunnels and hidden chambers inside pyramids, and has proven to be effective
J. Li +9 more
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Structural Modification of Fine Powders of Overburden Rocks of Saponite-Containing Bentonite Clay
Inorganic Materials: Applied Research, 2023The kinetic regularities of the process of structural modification of highly dispersed powders of saponite-containing material after mechanical dispersion have been studied. As information criteria characterizing the restructuring of the crystal lattice of minerals, changes are used that occur with the specific surface of powders at different grinding ...
A. M. Ayzenshtadt +4 more
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Image-guided tomography: structure conforming inversion for complex overburden
First Break, 2014Guy Hilburn, Yang He, Francis Sherrill, Taejong Kim and Zengjia Yan present a highresolution tomography method which flattens gathers reliably and quickly, while yielding geologically plausible velocity models. Traditional methods of updating velocity models by seismic tomography rely on a number of assumptions and simplifications.
Guy Hilburn +4 more
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Structural motion of water-resisting key strata lying on overburden
Journal of China University of Mining and Technology, 2008Abstract Water-preserved mining is one of the important parts of the 'Green Mining' technological system. The purpose of water-preserved mining is to prevent water from bursting out in coal mines and thus to protect water resources. The principle of water-resisting key strata (WKS) is proposed to establish a model capable of guiding and developing ...
Hai PU +3 more
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Reasonable Overburden Depth Analysis of Close-Frame Structure in Airport Project
Applied Mechanics and Materials, 2014The close-frame is the main structure type of underground passage in airport project. Its characteristics are long route, multi-zone crossing, heavy load capacity. The suitable thickness of covering soil is advantageous to structure. Therefore, it has important engineering significance in guiding structural design and to determine the optimal route ...
Qi Jie Teng, Song Hua Wu, Liang Zhang
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The limitations of 1‐D AEM inversion for 2‐D overburden structures
SEG Technical Program Expanded Abstracts 1998, 1998Successful exploration with airborne electromagnetic (AEM) methods depends to a large extent on effective methods for the quantitative interpretation of anomalies caused by variations in the conductivity and thickness of the overburden. Interpretation of AEM data is commonly via one-dimensional (1-D) inversion or the conductivitydepth imaging (CDI ...
Xiaoli Xie, James Macnae, James Reid
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2021
The increasing need to expand the urban transportation systems, tunnels, and underground structures are playing crucial role in building modernized transportation networks. It has been observed during recent earthquakes that underground structures may undergo severe distress produced by excessive deformation.
Chiranjib Sarkar, Sibapriya Mukherjee
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The increasing need to expand the urban transportation systems, tunnels, and underground structures are playing crucial role in building modernized transportation networks. It has been observed during recent earthquakes that underground structures may undergo severe distress produced by excessive deformation.
Chiranjib Sarkar, Sibapriya Mukherjee
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Research on New Dam Structure for High Earth Core Rockfill Dam on Thick Overburden
IACGE 2013, 2013For high earth core rockfill dam constructed on thick overburden, traditional anti-seepage system design and construction is to construct the foundation seepage cut-off wall first, and then build a rigid or soft-connected grouting gallery on top of seepage cut-off wall, and then cover the gallery with high plastic clay.
Han Xu +4 more
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Utilization of overburden quaternary rocks to create soil cushions for structures
The article presents data on scientific and technical support of the construction of an embankment with an area of 1.9 million m2 and a thickness of 4-6 m for the facilities of an electrometallurgical plant in the city of Horishni Plavni, Poltava region of Ukraine. The paper presents the results of comprehensive laboratory and field studies of physicalYuriy Vynnykov +4 more
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Effect of Overburden Thickness on the Copper Microstructure of Dual-Inlaid Interconnect Structures
AIP Conference Proceedings, 2006Dual‐inlaid Cu interconnects with different overburden thicknesses were fabricated and subsequently annealed applying identical conditions. The microstructure in trenches was characterized by electron backscatter diffraction (EBSD) before and after chemical mechanical polishing (CMP). For samples subjected to CMP, grain size and texture were determined
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