Karstic limestone problem at Kavsak dam site and reservoird area

Unay, G.; Ertunç, Aziz; Bulutlar, E.; Akdogan, E.

doi:10.1007/bf02603208

Cited by 3 publications

(1 citation statement)

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“…Dissolution is responsible for karst structures (Ford & Williams, 2007;Waltham, 2009), may cause the formation of polygonal faults observed in marine basins (Cartwright & Dewhurst, 1998;Shin et al, 2008) and can accelerate piping erosion, increase uplift pressure and compromise the stability of dams (Unay et al, 1982;Dreybrodt et al, 2002;Pearson, 2002;Gutiérrez et al, 2003;Jarvis, 2003;Payton & Hansen, 2003;Craft et al, 2006;Johnson, 2008). Dissolution and reprecipitation change volcanic ash from a sediment with a void ratio e ¼ 0 .…”

Section: Introductionmentioning

confidence: 97%

Dissolution of randomly distributed soluble grains: post-dissolution k₀-loading and shear

Cha¹,

Santamarina²

2014

Géotechnique

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Sediments experience mineral dissolution in most natural settings, and as a result of engineered processes such as carbon dioxide injection. The consequences of mineral dissolution are studied using the three-dimensional discrete-element method by gradually dissolving randomly distributed soluble grains in a laterally constrained cell under constant vertical stress. Either additional vertical load under zero lateral strain or shear loading are applied after dissolution. Results show that dissolution is accompanied by global horizontal stress change, increase in vertical displacement and porosity, and decrease in coordination number. Post-dissolution, sediments are more compressible; shear loading encounters a diminished peak strength and reduced dilative tendency in sediments that experienced dissolution; however, all specimens evolve towards a common 'critical state' strength and sediment fabric at a large strain (in the absence of reprecipitation, changes in grain shape, or changes in grain size distribution). The analysis of micromechanical parameters shows that the total number of contacts decreases during dissolution and remaining contacts carry higher forces. Higher granular interlocking hinders settlement and leads to the development of higher fabric and force anisotropy during dissolution. Granular arching effectively resists vertical displacement around dissolving grains, a honeycomb fabric emerges and the specimen gains a higher porosity during dissolution. Overall, the extent of dissolution (soluble fraction) and the level of particle interlocking/angularity define the evolution of micro-and macro-scale parameters during dissolution and its response to subsequent loading.

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Section: Introductionmentioning

confidence: 97%

Dissolution of randomly distributed soluble grains: post-dissolution k₀-loading and shear

Cha¹,

Santamarina²

2014

Géotechnique

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Laboratory simulation of karst development in carbonate rocks containing insoluble substances: a case study from west Iran

Taheri

Nikudel

Khamehchiyan

et al. 2015

Bull Eng Geol Environ

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Laboratory simulation of karst media dissolution: an experimental approach and a case study

Taheri

Ghobadi

Yari

et al. 2017

Carbonates Evaporites

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Karstic limestone problem at Kavsak dam site and reservoird area

Cited by 3 publications

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Dissolution of randomly distributed soluble grains: post-dissolution k₀-loading and shear

Dissolution of randomly distributed soluble grains: post-dissolution k₀-loading and shear

Laboratory simulation of karst development in carbonate rocks containing insoluble substances: a case study from west Iran

Laboratory simulation of karst media dissolution: an experimental approach and a case study

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Karstic limestone problem at Kavsak dam site and reservoird area

Cited by 3 publications

References 0 publications

Dissolution of randomly distributed soluble grains: post-dissolution k0-loading and shear

Dissolution of randomly distributed soluble grains: post-dissolution k0-loading and shear

Laboratory simulation of karst development in carbonate rocks containing insoluble substances: a case study from west Iran

Laboratory simulation of karst media dissolution: an experimental approach and a case study

Contact Info

Product

Resources

About

Dissolution of randomly distributed soluble grains: post-dissolution k₀-loading and shear

Dissolution of randomly distributed soluble grains: post-dissolution k₀-loading and shear