LiveZilla Live Chat Software

Constellation, le dépôt institutionnel de l'Université du Québec à Chicoutimi

Impact of rock block's shape and orientation on the hydraulic erodibility process

Boumaiza Lamine, Saeidi Ali et Quirion Marco. (2019). Impact of rock block's shape and orientation on the hydraulic erodibility process. Dans : GAC-MAC 2019 , May 12-15, 2019, Québec, Québec.

Le texte intégral n'est pas disponible pour ce document.

Résumé

The most commonly used method for assessing the hydraulic erodibility of rock is the Annandale's method. This method is based on a correlation between the force of flowing water and the capacity of rock resistance. This capacity is evaluated using the Kirsten's index which was initially developed to evaluate the excavatability of earth materials. This index is determined according to certain geomechanical factors, such as the compressive strength of intact rock, the rock block size, the discontinuities shear strength and the relative block structure. This last characteristic represents the required effort to erode the rock and, it can be quantified considering the rock block's shape and orientation relative to the direction of flow. To determine the relative rock structure in the field, the dip and dip direction of closer spaced joint set, as well as the ratio of joints spacing are required. It is found that the Kirsten's concept can be applied only when the direction of flow is perpendicular to the strike of closer spaced joint set. Our proposed communication focuses on the adjustments introduced to Kirsten's initial concept concerning the relative block structure parameter. Thus, two equations are proposed to evaluate the impact of rock block's shape and orientation when the direction of flow is not perpendicular to the strike of closer spaced joint set.

Type de document:Matériel de conférence (Non spécifié)
Date:12 Mai 2019
Sujets:Sciences naturelles et génie > Génie
Sciences naturelles et génie > Sciences appliquées
Sciences naturelles et génie > Sciences naturelles > Sciences de la terre (géologie, géographie)
Département, module, service et unité de recherche:Départements et modules > Département des sciences appliquées > Unité d'enseignement en sciences de la Terre
Liens connexes:
Mots-clés:érodibilité hydraulique, roche, méthode d'Annandale, résistance
Déposé le:03 mars 2021 00:23
Dernière modification:03 mars 2021 00:23
Afficher les statistiques de telechargements

Éditer le document (administrateurs uniquement)

Creative Commons LicenseSauf indication contraire, les documents archivés dans Constellation sont rendus disponibles selon les termes de la licence Creative Commons "Paternité, pas d'utilisation commerciale, pas de modification" 2.5 Canada.

Bibliothèque Paul-Émile-Boulet, UQAC
555, boulevard de l'Université
Chicoutimi (Québec)  CANADA G7H 2B1
418 545-5011, poste 5630