Assessment of the Dynamic Loads Effect on Underground Mines Supports

Oraee-Mirzamani, Kazem
Organization: International Conference on Ground Control in Mining
Pages: 6
Publication Date: Jan 1, 2011
Blasting operations generate seismic effects in underground mines. These effects apply additional dynamic loads on the support system, which should bear both static and dynamic loads. Static loads are caused by the weight of the superincumbent strata, while dynamic loads occur as a result of blasting in the mining area. Identification of the origin and determination of the support system behavior in natural frequencies is crucial in assessing the stability of underground mines. This is because resonance occurs when a support is vibrated with its natural frequencies, which can cause a vibration with the maximum amplitude and subsequently cause extreme deformations. The mechanism of support system deformation during dynamic load displacement has been studied and numerical simulation for the impact of the dynamic loads on stability of supports is carried out using finite element method. The paper introduces a simple technique for improving stability and safety of mining operations. Results obtained and the methodology adopted in this research can help mining design engineers make decisions on adequate support for active mining operations.
Full Article Download:
(2319 kb)


Additional chapters/articles from the SME-ICGCM book 30th International Conference on Ground Control in Mining

A Study on Geotechnical Risks in Interaction Between Open-Pi
Think Like a Rock
Mapping and Application of Roof Joint Patterns for Ground Co
The Autowarning Telltale: A New Safety Monitoring Device for
Recent Innovations for Slope Development
Analysis of Roof Falls at and Recommendation of Roof Control
The Introduction of Uk Rockbolting Technology into Coal Mine
A Pipeliner's Perspective on Longwall Mining
Why Dead Load Suspension Design for Roadway Roof Support Is
Investigation Into Abnormal Surface Subsidence Above a Longw
Protecting Underground Coal Miners From Rib Falls
MSHA Technical Review of Proposed Mine Designs for U.S.Under
Prediction of Roof Fall Rate in Coal Mines Using Fuzzy Logic
Surface Subsidence Velocity of Fully-Mechanized Thick Seam T
Engineering Geophysics - Mine Subsidence Risk Assessment Stu
A Retrospective on LaModel (Or Dr. Heasley?s Wild Ride)
Safe Pillar Extraction Practice - Some Geotechnical Principl
Case Study of Roof Behaviour and Conditions for Longwall Fac
Early Warning of Longwall Weighting Events and Roof Cavities
Streams and Longwall Coal Mining Subsidence: A Pennsylvania
Surface Structures Impacted By Subsidence From Pennsylvania
GIS Supported Evaluation of Surface Level Impacts Due to Aba
Development and Application of Impact-Resistant Lagging for
Detection and Monitoring of Surface Subsidence Associated wi
Applications of ARMPS (Version 6) to Practical Pillar Design
The Duncan Method of Partial Pillar Extraction at Tasman Min
The Duncan Method of Partial Pillar Extraction at Tasman Min
Geotechnical Considerations for Longwall Top Coal Caving at
Assessment of the Dynamic Loads Effect on Underground Mines
Designing Shotcrete As Primary Support in Tunnels
The Influence of Interface Friction and W/H Ratio on the Vio
Gateroad Support in the Czech and Polish Coal Mining Industr
Study on Eco-Friendly Underground Mining System for Ultra-Th
Ground Control Technology for Mass Exploitation of Coal Depo
The Initial Performance of Commonly Used Primary Support on
Application of Stress, Geologic, and Support Design System (
A Retrospective Assessment of Ground Control Research and Ap
Calculating the Mining-Induced Horizontal Deformation Indice
Understanding the Causes of Roof Control Problems on a Longw
The Technical Progress and Problems to Be Solved of Thick Co
Topography and Coal Seam Initial Stress Estimation: a Sensit
The Effects of Longwall Coal Mining on the Hydrogeology of S
Application of Yield-Lok Bolt for Bursting and Convergence G
Research on Mine Pessure Behaviors and Overlying Strata Move
Preventing Roof Fall Accidents - An Operation's Approac
Roof Bolting for Long-Term Entries in Underground Coal Mines
Numerical Modeling of the Pillar Confinement with Backfillin