analysis of underground block caving mining induced

Numerical analysis of block caving induced instability in ...

2014-5-16 · The FEM/DEM modelling approach was utilized in the analysis of block caving-induced step- path failure development in a large open pit slope. Analysis indicated that there is a threshold percentage of critical intact rock bridges along a step-path failure plane that may ensure stability of an open pit throughout caving …

Block caving-induced strata movement and associated ...

The block cave mining mechanism and associated subsidence present one of the most challenging engineering problems in rock mining. Although block caving has been in use for many years, there has been limited research on the impact caving angles have on surface settlement and failure profiles, specifically when associated with deep caves and surface propagation (i.e., not as part of caving …

Prediction of mining-induced surface subsidence and …

2017-12-1 · Empirical methods (i.e. profile functions, influence functions, graphical methods) are based on the back analysis of field data; for instance, Woo et al. 15 developed a comprehensive database of block cave mining and mining-induced surface subsidence to guide empirical relationships between caving depth and its impact on surface movements ...

Numerical Analysis of Block Caving-Induced Instability in ...

2009-3-6 · This paper addresses one of the most challenging problems in mining rock engineering—the interaction between block cave mining and a large overlying open pit. The finite element modeling/discrete element modeling (FEM/DEM) approach was utilized in the analysis of block caving-induced step-path failure development in a large open pit slope. The analysis …

Characterisation of block cave mining secondary ...

Abstract. Block cave mining is a widely employed mining method around the world due to its low operating cost. One of the key factors that affects block caving mine''s productivity is fragmentation; accordingly, significant efforts have been made and are currently being made to study fragmentation processes, including the use of numerical modelling and remote sensing …

An overview of block caving operation and available ...

2010-8-26 · Block caving method Underground mining is the planned extraction and transportation of a mineral resource from its ... Caving of the rock mass is induced by undercutting a block. The rock slice directly beneath the block is fractured by blasting, which ... analysis is done. The RQD value helps to identify the caving characteristics of the rock ...

Block Caving Mining Magazine

2020-3-24 · BLOCK ANd pANeL CAVING Block caving is an underground mining method that uses gravity to exploit massive, steeply dipping orebodies located at depth, particularly those with disseminated mineralisation or that are low-grade in nature, but too deep to be extracted using open pit methods. Block caving also depends on insitu stresses and

(PDF) Analysis of Underground Block Caving Mining …

Analysis of Underground Block Caving Mining Induced Surface Movement in Papua, Indonesia 51 This crater has its major effects immediately over the mined-out block, although subsidence usually occurs outside of this area and is subjected to the angle of draw which depends on the nature and thickness of overburden 17).

Analysis of Underground Block Caving Mining Induced ...

Analysis of Underground Block Caving Mining Induced Surface Movement in Papua, Indonesia June 2009 Memoirs of the Faculty of Engineering, Kyushu …

Analysis of Underground Block Caving Mining Induced ...

The occurrence of the surface movement is the main focus of the study regarding to the gold & copper underground block caving mining in Papua, Indonesia. The underground mining has brought some environmental problems on the terrain surface such as the lowering of the elevation followed by growing of the waste pile as the result from the failure ...

Review and simulation of passive seismic tomography in ...

mounted in underground and then surface mining to determine the failure and rockburst hazards (Drnevich & Gray 1981). Since the 1980s, seismic monitoring systems have been used in underground mining with different mining methods such as cut-and-fill, block caving and sublevel caving to control rockburst (Trifu & Sourineni 2009).

The Block Cave Mining Method

The Block Cave Mining Method. Block caving is a large-scale underground mining method applicable to the extraction of low-grade, massive ore bodies. With the amount of literature available on block caving this report identifies the need to provide a simple understanding of the process. Understanding a production process of a block cave mine is ...

Block caving-induced strata movement and associated ...

2014-8-20 · The block cave mining mechanism and associated subsidence present one of the most challenging engineering problems in rock mining. Although block caving has been in use for many years, there has been limited research on the impact caving angles have on surface settlement and failure profiles, specifically when associated with deep caves and surface propagation (i.e., not as part of caving …

Analysis of Underground Block Caving Mining Induced ...

2009-6-22 · Analysis of Underground Block Caving Mining Induced Surface Movement in Papua, Indonesia Setianto Agung, Esaki Tetsuro, Mitani Yasuhiro, Djamaluddin Ibrahim, Ikemi Hiroaki 69(2), 49-64, 2009-06-22

Numerical Analysis of Block Caving-Induced Instability in ...

This paper addresses one of the most challenging problems in mining rock engineering—the interaction between block cave mining and a large overlying open pit. The finite element modeling/discrete element modeling (FEM/DEM) approach was utilized in the analysis of block caving-induced step-path failure development in a large open pit slope. The analysis indicated …

Characterization and empirical analysis of block caving ...

First, most practical mining operations related to block caving are on a large scale. Mining up to 1,000 m, even 2,000 m below the ground surface (bgs), is a very …

Investigation and characterization of ...

To initially constrain and calibrate the model, a back analysis of a 2005 caving-induced open-pit mine slope failure above the block cave undercut was performed, which showed that the modelled outcome is dependent on the assumed rock mass properties and far …

Mining induced seismicity

2019-6-28 · Mining induced seismicity. The scope of this article covers seismic sources, monitoring and analysis methods of seismic events and mine design in the context of seismicity management in underground mines. All Underground mines experience some degree of seismicity. Damage due to seismicity has been observed in various mines around the globe.

Underground Mining Methods and Equipment

2020-8-25 · stoping, cut-and-fill, longwall mining, sublevel caving, and block caving. The second section describes underground mining equipment, with particular focus on excavation machinery such as boomheaders, coal cutters, continuous miners and shearers. 1. Underground Mining Methods 1.1. Classification of Underground Mining Methods

Characterization and analysis of discontinuous subsidence ...

While block caving presents an economic means to develop lower grade ore deposits, it often leads to significant ground deformations threatening the safety of overlying mine infrastructure. For guidance on relationships between caving depth and surface subsidence, a comprehensive

Characterization and empirical analysis of block caving ...

Characterization and empirical analysis of block caving induced surface subsidence and macro deformations K. Woo & E. Eberhardt University of British Columbia, Vancouver, Canada A. van As Rio Tinto Technical Services, Brisbane, Australia ABSTRACT: The increasing move to block cave mining methods (including sublevel and panel

ANALYSIS OF BLOCK STABILITY FOR SEMI – LEVEL …

2013-11-26 · block methods belong to this group of bulk mining methods. One of them, named the semi – level caving, is present in this paper, with analysis of its block and drawbells stability. Keywords: underground mining, mining method design, drawbells * University of Belgrade, Technical Faculty in Bor INTRODUCTION The underground mining in Bor ore de ...

[PDF] Analysis of Underground Block Caving Mining …

Corpus ID: 106527017. Analysis of Underground Block Caving Mining Induced Surface Movement in Papua, Indonesia @article{Setianto2009AnalysisOU, title={Analysis of Underground Block Caving Mining Induced Surface Movement in Papua, Indonesia}, author={A. Setianto and T. Esaki and Y. Mitani and I. Djamaluddin and Hiroaki Ikemi}, journal={Memoirs of the Faculty of …