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Speleology in Kazakhstan

Shakalov on 04 Jul, 2018
Hello everyone!   I pleased to invite you to the official site of Central Asian Karstic-Speleological commission ("Kaspeko")   There, we regularly publish reports about our expeditions, articles and reports on speleotopics, lecture course for instructors, photos etc. ...

New publications on hypogene speleogenesis

Klimchouk on 26 Mar, 2012
Dear Colleagues, This is to draw your attention to several recent publications added to KarstBase, relevant to hypogenic karst/speleogenesis: Corrosion of limestone tablets in sulfidic ground-water: measurements and speleogenetic implications Galdenzi,

The deepest terrestrial animal

Klimchouk on 23 Feb, 2012
A recent publication of Spanish researchers describes the biology of Krubera Cave, including the deepest terrestrial animal ever found: Jordana, Rafael; Baquero, Enrique; Reboleira, Sofía and Sendra, Alberto. ...

Caves - landscapes without light

akop on 05 Feb, 2012
Exhibition dedicated to caves is taking place in the Vienna Natural History Museum   The exhibition at the Natural History Museum presents the surprising variety of caves and cave formations such as stalactites and various crystals. ...

Did you know?

That water of constitution is chemically bound water [16].?

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KarstBase a bibliography database in karst and cave science.

Featured articles from Cave & Karst Science Journals
Chemistry and Karst, White, William B.
See all featured articles
Featured articles from other Geoscience Journals
Karst environment, Culver D.C.
Mushroom Speleothems: Stromatolites That Formed in the Absence of Phototrophs, Bontognali, Tomaso R.R.; D’Angeli Ilenia M.; Tisato, Nicola; Vasconcelos, Crisogono; Bernasconi, Stefano M.; Gonzales, Esteban R. G.; De Waele, Jo
Calculating flux to predict future cave radon concentrations, Rowberry, Matt; Marti, Xavi; Frontera, Carlos; Van De Wiel, Marco; Briestensky, Milos
Microbial mediation of complex subterranean mineral structures, Tirato, Nicola; Torriano, Stefano F.F;, Monteux, Sylvain; Sauro, Francesco; De Waele, Jo; Lavagna, Maria Luisa; D’Angeli, Ilenia Maria; Chailloux, Daniel; Renda, Michel; Eglinton, Timothy I.; Bontognali, Tomaso Renzo Rezio
Evidence of a plate-wide tectonic pressure pulse provided by extensometric monitoring in the Balkan Mountains (Bulgaria), Briestensky, Milos; Rowberry, Matt; Stemberk, Josef; Stefanov, Petar; Vozar, Jozef; Sebela, Stanka; Petro, Lubomir; Bella, Pavel; Gaal, Ludovit; Ormukov, Cholponbek;
See all featured articles from other geoscience journals

Featured article from geoscience journal

Electronic Journal of Geotechnical Engineering/EJGE, 2012, Issue 17, p. 277-290
A Non-Linear Fluid-solid Coupling Mechanical Model Study for Paleokarst Collapse Breccia Pipes Under Erosion Effect
Abstract:
In this research the seepage characteristics of Paleokarst collapse breccia pipes under particles erosion effect, and their water inrush mechanism were studied. In this paper, based on the seepage theory of pores media and the nonlinear mechanics theory, we deduced the transport equation of particles in Paleokarst collapse breccia pipes, obtained the seepage field equation for Paleokarst collapse breccia pipes, and investigated the porosity evolution equation under the effect of particles transport, building a nonlinear fluid-solid coupling model for Paleokarst collapse breccia pipes. Furthermore, we took the relationship between fluid and particle velocities as well as the effect of particle concentration on fluid property into account, and assumed the porosity in Paleokarst collapse breccia pipes obey Weibull distribution. Finally, we lead the model equations into the COMSOL Multiphysics to solve, obtaining the parameters including porosity, seepage velocity, particle concentration, water inflow evolution law as the time. The research results indicate that: (1) particles in Paleokarst collapse breccia pipes will be eroded and transport under the effect of fluid movement as the time, the concentration of particles behaved rapidly increased and then sharply decreased, and the porosity and seepage velocity grew quickly until reached the maximum value; (2) the seepage capacity for Paleokarst collapse breccia pipes initially grows slowly, while seepage velocity increases at an increasing rate with the growth and connectivity of porosity; (3) the porosity evolution under erosion effect in Paleokarst collapse breccia pipe is an important reason for Paleokarst collapse breccia pipe water inrush.