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Assessment of clay soils and clay-rich rock for clogging of TBMs
Tunnelling and Underground Space Technology, 2016Abstract Shield tunnel drives in both, overconsolidated clays soils and sedimentary rock with clay minerals, frequently suffer extremely from hindrance due to clogging. The problem of clogging can have varying degrees, from locally blocked disk cutter housings to completely clogged excavation chambers with a blocked cutterhead.
Markus Thewes, Fritz Hollmann
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The role of clay-rich rocks in spoil pile failures at Goonyella Mine, Queensland, Australia
International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1985Goonyella mine is a strip coal mine located in the Bowen Basin of central Queensland, Australia. Since mining began, extensive failures of both the high walls and the spoil piles have occurred in some pits. Earlier work had shown that the shear strength of the moist clay-rich spoil at the base of the pile is a controlling factor in the development of ...
R.W. Seedsman, W.W. Emerson
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Molecular-level understanding of metal ion retention in clay-rich materials
Nature Reviews Earth & Environment, 2022Xiandong Liu +5 more
semanticscholar +3 more sources
Géotechnique, 2018
Clay-rich rocks are potential geological barriers for geological repositories of radioactive waste. The long-term safety of a repository requires a full characterisation of the time-dependent thermal hydro-mechanical behaviour of the clay-rich rocks. This paper investigates the creep deformation and induced permeability change of the Callovo-Oxfordian
Z. B. Liu +3 more
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Clay-rich rocks are potential geological barriers for geological repositories of radioactive waste. The long-term safety of a repository requires a full characterisation of the time-dependent thermal hydro-mechanical behaviour of the clay-rich rocks. This paper investigates the creep deformation and induced permeability change of the Callovo-Oxfordian
Z. B. Liu +3 more
openaire +4 more sources
, 2021
The formation of carbonate spherulites, recognized as part of the South-Atlantic Pre-Salt reservoir rocks, remains enigmatic. Well-chosen analogues provide insights into depositional and diagenetic conditions and the biotic versus abiotic processes that ...
H. Claes +10 more
semanticscholar +1 more source
The formation of carbonate spherulites, recognized as part of the South-Atlantic Pre-Salt reservoir rocks, remains enigmatic. Well-chosen analogues provide insights into depositional and diagenetic conditions and the biotic versus abiotic processes that ...
H. Claes +10 more
semanticscholar +1 more source
Fault slip in clay-rich rocks due to water-clay interactions
2023Clay-rich rocks occur in a wide range of tectonic settings. They are of great interest, for example, for the mechanical properties of shallow subduction zone interfaces, but also for natural barriers in nuclear waste deposits or as subsurface caprocks for CO2 storage.
Markus Rast +5 more
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Constraining porewater chemistry in a clay–rich rock sequence
2015It is important to evaluate the porewater chemistry of argillaceous host rocks for safety assessment because it affects radionuclide migration. The nanometric pore-space architecture and the resulting very low hydraulic conductivity, however, make the sampling and characterisation of porewater chemistry a difficult task.
Wersin, Paul +8 more
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Metamorphism of Pelitic (Al-Rich) Rocks
, 2020Pelites are clay-rich sedimentary rocks that form in low-energy depositional environments, including lakes, the distal portions of continental shelves, and deep-sea abyssal plains. When metamorphosed, pelites show a great diversity in mineral assemblages
R. Palin, B. Dyck
semanticscholar +1 more source
Caveats of using fractal analysis for clay rich pore systems
, 2020The conventional techniques cannot accurately predict the multiphase flow behaviour in clay rich low permeability rocks. This is particularly important in applications such as hydraulic fracturing where fluid uptake into low permeability rocks is of ...
M. Siddiqui +4 more
semanticscholar +1 more source