Analysis on FLAC Large Deformation Mode of Rock Mass due to Transform from Open-Pit to Underground Mining

Lai Shan Chang; Xin Li; Rui Peng Zhang; Ya Nan Chen

doi:10.4028/www.scientific.net/AMM.353-356.957

Paper Titles

Dynamic Triaxial Test Research of Stage Change of Cohesive Soil
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The Study of Optimization Design Numerical Simulation on Variable Spacing Pile-Raft Foundation
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Stability Analysis of Unsaturated Soil Slopes Based on Unified Strength Theory
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Anti-Floating Anchor Rods and Waterproof Construction Technology for Deep Pits
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Analysis on FLAC Large Deformation Mode of Rock Mass due to Transform from Open-Pit to Underground Mining
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Control on Reasonable Impact Loading in Static-Dynamic Drainage Consolidation Method
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Dig-Hole Pile Excavation by Blasting in Cities and Towns
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Applications of Soil Nailed Wall in Foundation Pit Support
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Static Loading Test of the End-Bearing Pile under the Sides Friction Action
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 353-356Analysis on FLAC Large Deformation Mode of Rock...

Analysis on FLAC Large Deformation Mode of Rock Mass due to Transform from Open-Pit to Underground Mining

Abstract:

According to the problem of rock slope deformation, fracture and stability during the transform from open-pit to underground mining at Yanqianshan Iron Mine, using FLAC large deformation mode to analysis mine excavation characteristics about deformation and damage of open-pit slope in different depth. Excavation simulation displays that the softrock of north slope easily to backfall heavily, But unusually form rapid sliding, the influence to underground mining is small, but large number of small crushed stones fill the rock layer, that is unfavorable to control the dilution and loss index. South slope hardrock mass have not appeared large deformation and unitary sliding during primary mining.