NDLI: Hydrogeological Behaviour of Covers with Capillary Barrier Effects Made of Mining Materials

Content Provider	Springer Nature Link
Author	Kalonji Kabambi, A. Bussière, B. Demers, I.
Copyright Year	2017
Abstract	A laboratory study and numerical predictions were conducted to evaluate the effectiveness of a cover with capillary barrier effects (CCBE) made of mining materials in limiting the generation of acid mine drainage. The present study included the installation of three experimental laboratory columns as physical models of CCBEs. Each column was instrumented to monitor the hydrogeological behaviour of the different layers of the cover. In the moisture-retaining layer, which is made of desulphurized tailings, the degree of saturation (Sr) is usually maintained above 85%, while Sr in the two waste rock layers placed above and below the moisture-retaining layer (MRL) is typically between 5 and 15%. Suctions were usually lower than the air entry value for the desuphurized tailings layers, while suctions largely exceeded the water entry value of the mine waste rock in the two capillary break layers (CBLs). The oxygen flux was calculated using numerical modeling at the bottom of the MRL. Results confirm that the oxygen flux is low (between 0.34 and 3 g/m2/year). This study also confirms the potential of mine waste rocks to act as a substitute for natural granular soils in the CBL of a CCBE.Une étude de laboratoire et numérique a été menée afin d’évaluer l’efficacité d’une couverture avec effets de barrière capillaire (CEBC) faite de matériaux miniers pour limiter la génération du drainage minier acide (DMA). La présente étude comprend le montage au laboratoire de trois colonnes expérimentales utilisées comme modèles physiques de CEBCs. Chaque colonne a été instrumentée pour suivre le comportement hydrogéologique des différentes couches du recouvrement. Dans la couche de rétention d’eau constituée de résidus miniers désulfurés, le degré de saturation (Sr) s’est maintenu à des valeurs habituellement supérieures à 85% alors que dans les deux couches des stériles placées au-dessus et en-dessous de la couche de rétention d’eau, il s’est situé généralement à des valeurs entre 5% et 15%. Les succions mesurées dans les différentes couches ont été habituellement inférieures à la pression d’entrée d’air (AEV) des résidus miniers désulfurés pour les couches de rétention d’eau et largement supérieures à la pression d’entrée d’eau (WEV) des stériles miniers dans les deux couches de bris capillaires. Les flux d’oxygène calculés numériquement à la base de la couche de rétention d’eau confirment que ces derniers sont faibles (variant entre 0,34 à 3 g/m2/an). Cette étude confirme également le potentiel des stériles miniers d’agir comme couches de bris capillaires en substitution aux sols granulaires naturels dans les CEBCs.
Starting Page	1199
Ending Page	1220
Page Count	22
File Format	PDF
ISSN	09603182
Journal	Geotechnical and Geological Engineering
Volume Number	35
Issue Number	3
e-ISSN	15731529
Language	English
Publisher	Springer International Publishing
Publisher Date	2017-01-27
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	colonnes expérimentales couverture avec effets de barrière capillaire drainage minier acide écoulement non saturé flux d’oxygène matériaux miniers Geotechnical Engineering & Applied Earth Sciences Hydrogeology Terrestrial Pollution Waste Management/Waste Technology Civil Engineering
Content Type	Text
Resource Type	Article
Subject	Soil Science Geology Architecture Geotechnical Engineering and Engineering Geology

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Performance d’une couverture avec effets de barrière capillaire faite de mélanges gravier-bentonite contrôler la migration d’oxygène en conditions nordiques.

Design of Inclined Covers with Capillary Barrier Effect

Design of Inclined Covers with Capillary Barrier Effect by S.-E. Parent and A. Cabral

Evaluation of numerical simulations of capillary barrier field tests

Hydro-thermal performance of multilayer capillary barriers in arid lands

Characterization of Kolar gold field mine tailings for cyanide and acid drainage

Impacts de recouvrements de résidus organiques sur des résidus miniers réactifs

Study of Drainage Through Hydraulic Fill Stopes using Method of Fragments

Improving Properties of Sealing Layers Made of Till by Adding Green Liquor Dregs to Reduce Oxidation of Sulfidic Mine Waste

Hydrogeological Behaviour of Covers with Capillary Barrier Effects Made of Mining Materials

Similar Documents

Performance d’une couverture avec effets de barrière capillaire faite de mélanges gravier-bentonite contrôler la migration d’oxygène en conditions nordiques.

Design of Inclined Covers with Capillary Barrier Effect

Design of Inclined Covers with Capillary Barrier Effect by S.-E. Parent and A. Cabral

Evaluation of numerical simulations of capillary barrier field tests

Hydro-thermal performance of multilayer capillary barriers in arid lands

Characterization of Kolar gold field mine tailings for cyanide and acid drainage

Impacts de recouvrements de résidus organiques sur des résidus miniers réactifs

Study of Drainage Through Hydraulic Fill Stopes using Method of Fragments

Improving Properties of Sealing Layers Made of Till by Adding Green Liquor Dregs to Reduce Oxidation of Sulfidic Mine Waste

Hydrogeological Behaviour of Covers with Capillary Barrier Effects Made of Mining Materials