alexa

GET THE APP

Dersleri yüzünden oldukça stresli bir ruh haline sikiş hikayeleri bürünüp özel matematik dersinden önce rahatlayabilmek için amatör pornolar kendisini yatak odasına kapatan genç adam telefonundan porno resimleri açtığı porno filmini keyifle seyir ederek yatağını mobil porno okşar ruh dinlendirici olduğunu iddia ettikleri özel sex resim bir masaj salonunda çalışan genç masör hem sağlık hem de huzur sikiş için gelip masaj yaptıracak olan kadını gördüğünde porn nutku tutulur tüm gün boyu seksi lezbiyenleri sikiş dikizleyerek onları en savunmasız anlarında fotoğraflayan azılı erkek lavaboya geçerek fotoğraflara bakıp koca yarağını keyifle okşamaya başlar
Full Three-dimensional Finite Element Analysis of the Stress Redistribution in Mine Structural Pillar | OMICS International | Abstract
ISSN: 2168-9806

Journal of Powder Metallurgy & Mining
Open Access

Our Group organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.

Open Access Journals gaining more Readers and Citations
700 Journals and 15,000,000 Readers Each Journal is getting 25,000+ Readers

This Readership is 10 times more when compared to other Subscription Journals (Source: Google Analytics)

Research Article

Full Three-dimensional Finite Element Analysis of the Stress Redistribution in Mine Structural Pillar

M.Sepehri, D.B. Apel* and J. Szymanski

Department of Civil and Environmental Engineering, School of Mining & Petroleum Engineering, 3-045 Markin/CNRL Natural Resources Engineering Facility, University of Alberta, Edmonton, AB T6G 2W2, Canada

*Corresponding Author:
D.B. Apel
Professor, Department of Civil and Environmental Engineering
School of Mining & Petroleum Engineering
3-045 Markin/CNRL Natural Resources Engineering Facility
Edmonton, AB T6G 2W2, Canada
Tel: 780-492-3379
E-mail: [email protected]

Received Date: November 18, 2013; Accepted Date: December 24, 2013; Published Date: December 31, 2013

Citation: Sepehri M, Apel DB, Szymanski J (2013) Full Three-dimensional Finite Element Analysis of the Stress Redistribution in Mine Structural Pillar. J Powder Metall Min 3: 119. doi: 10.4172/2168-9806.1000119

Copyright: © 2013 Sepehri M, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

The assessment of the magnitudes and directions of the in situ and mining induced stresses is a vital part of an underground excavation design. In this study, the finite element method is used to develop and establish a full three-dimensional numerical model using Abaqus/Standard (Dassault Systèmes) software to evaluate the stress redistribution and the ground stability in main production level of an underground hard rock mine located in Northern Canada. The in-situ stresses are calculated based on the unit weight of the overburden rock. The ratio of the average horizontal stress to vertical stress is assumed to be 1.5. This value is selected based on the average stress ratios obtained from the neighboring mines. The behavior of the rock is assumed to be elasto-plastic. To verify and calibrate the numerical model, the obtained displacements values are compared with the values obtained from the ground movement monitors installed in this area. Based on the results of the numerical model, it was concluded that benching of the floor in the 7340E access drift by an additional 2m would increase the zones of failure in the studied pillar. Moreover, the zones of failure in the adjacent tunnels which were inside of the zone of influence of the 7340E access drift would be increased dramatically.

Keywords

Select your language of interest to view the total content in your interested language

Google Scholar citation report
Citations : 887

Journal of Powder Metallurgy & Mining received 887 citations as per Google Scholar report

Indexed In
  • CAS Source Index (CASSI)
  • Index Copernicus
  • Google Scholar
  • Open J Gate
  • Genamics JournalSeek
  • RefSeek
  • Hamdard University
  • EBSCO A-Z
  • OCLC- WorldCat
  • Publons
  • Euro Pub
Recommended Journals
Share This Page
Top