influence of stope design on stability of hanging wall

MINING

Influence of Stope Design on Stability of Hanging Wall Decline in

& 0183; 2013. 12. 30.& 0183; cline, hanging wall decline, and stope excavation. The declines geometry both on foot wall and hanging wall are 4.2 m width and 4.8 m height. Meanwhile, standard stope geometry is 5 m width and 5 m height. The distance be-tween stope to footwall decline d1 set fixed as 20 m. The distance between stope to hanging wall decline d2

Influence of Stope Design on Stability of Hanging Wall

2014. 6. 19.& 0183; Cibaliung Underground Gold Mine applies cut and fill mining method to optimize ore production and maintain underground stability. Existing 5 m × 5 m height and width of stope geometry has a potential new design to increase production of gold due to variety of thick ore, however serious shotcrete failures often occur in hanging wall decline.Cited by: 7

Influence of Stope Design on Stability of Hanging Wall

2021. 4. 4.& 0183; Cibaliung Underground Gold Mine applies cut and fill mining method to optimize ore production and maintain underground stability. Existing 5 m × 5 m height and width of stope geometry has a potential new design to increase production of gold due to variety of thick ore, however serious shotcrete failures often occur in hanging wall decline.Cited by: 7

Influence of Stope Design on Stability of Hanging Wall

This paper aims to find out the relationship between stope design and stability of hanging wall decline. The analysis conducted\ud in this study is based on underground characteristics and geological condition of Cibaliung area. The impact of stope design on decline stability was analyzed by

Influence of Stope Design on Stability of Hanging Wall

Influence of Stope Design on Stability of Hanging Wall Decline in Cibaliung Underground Gold Mine By Purwanto, Hideki Shimada, Takashi Sasaoka, Ridho K. Wattimena and Kikuo Matsui Cite

Open Access IJG Influence of Stope Design on Stability of

Existing 5 m × 5 m height and width of stope geometry has a potential new design to increase produc-tion of gold due to variety of thick ore, however serious shotcrete failures often occur in hanging wall decline. This pa-per aims to find out the relationship between stope design and stability of hanging wall

Influence of Stope Design on Stability of Hanging Wall

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INFLUENCE OF STRESS, UNDERCUTTING, BLASTING AND TIME ON

& 0183; 2016. 5. 10.& 0183; that influence hanging wall dilution are either ignored or assessed in purely subjective 2.3 Empirical Open Stope Stability and Dilution Design Methods ..30 2.3.1 NGI Classifi ion System, Q and INFLUENCE OF BLASTING ON STOPE HANGING WALL STABILITY AND DILUTION

Discrete analysis of open stope stability

& 0183; impact of hanging wall stability based on the stope surface, fault lo ion along this surface, joint confinement and rock block strength. Suorineni et al. 1999 have developed a fault factor for incorporation into the stability graph method; however, this still requires the designer to make decisions regarding fault hierarchy.Cited by: 1

Influence of stress, undercutting, blasting and time on

The stope hanging wall HW zone of stress relaxation was quantified based on extensive 2D and 3D numerical modelling. Stress relaxation was linked to the stope geometry and the degree of adjacent mining activity. The influence of undercutting on stope HW stability Cited by: 17

Factors Influencing Stope Hanging Wall Stability and

The sublevel open stope method is widely practiced in many Canadian mines when extracting thin tabular orebodies. This method is used as an alternative to sublevel caving when ore dilution contamination of ore by waste rock is an issue and where fairly competent rock exists. Dilution and instability at the stope hanging wall HW can significantly increase mining operation costs.

Discrete analysis of open stope stability

& 0183; impact of hanging wall stability based on the stope surface, fault lo ion along this surface, joint confinement and rock block strength. Suorineni et al. 1999 have developed a fault factor for incorporation into the stability graph method; however, this still requires the designer to make decisions regarding fault hierarchy.

Influence of stress, undercutting, blasting and time on

The stope hanging wall HW zone of stress relaxation was quantified based on extensive 2D and 3D numerical modelling. Stress relaxation was linked to the stope geometry and the degree of adjacent mining activity. The influence of undercutting on stope HW stability

A Compilation of Dilution Graph Data for Open Stope Hangingwall Design

& 0183; stope wall stability based on empirical data. Factors which are external to the input parameters of the methods have been seen to potentially influence stability at various mine sites. These factors may include faulting, stress, undercutting, blasting and other mine specific factors. The effect of

Probabilistic Stability Analysis of Open Stopes in Sublevel

& 0183; 2019. 1. 25.& 0183; stope span width and stope hanging wall dip, have a strong influence on the stope stability state. Also it was found that the POF is significantly controlled by interaction effects between span width / hanging wall HR and hanging wall dip / hanging wall HR. Moreover, according to the results of the mathematical optimization, the maximum

Open Stope Stability Using 3D Joint Networks

& 0183; 2019. 1. 12.& 0183; investigated surface back, hanging wall etc. of an excavation,Fig. 4. A stope is considered to be stable, in transition or susceptible to caving. Over the years a series of zones of relative stability have been suggested. Potvin and Hadjigeorgiou 2001

Evaluation of the effect of geometrical parameters on

2019. 5. 1.& 0183; The effect of stope hanging wall HR, stope span width and stope hanging wall dip were evaluated for three groups of stopes, having different average values of span width 4 m, 8 m and 12 m , with every group divided in three hanging wall HR egories 2.5–5 m, 5–7 m and 7–10 m and each egory of HR varied the hanging wall dip in four classes of 20°–45°, 45°–60°, 60°–75

PDF Evaluation of Long-Hole Mine Design Influences on

The objective of this paper is to assess stope hanging wall HW stability and ore dilution with respect to ore inclination and stope geometry in sublevel, open stoping, narrow-vein mines.

PDF Tesis Phd jcwang OPEN STOPE DESIGN Ricardo

Tesis Phd jcwang OPEN STOPE DESIGN. R. Salas Iparragu Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 37 Full PDFs related to this paper. READ PAPER. Tesis Phd jcwang OPEN STOPE DESIGN. Download. Tesis Phd jcwang OPEN STOPE DESIGN.

Optimization calculation of stope structure parameters

Mathews stability graphic method, based on the rock classifi ion system, measures the stability of the ore roof area of a relatively simple calculation method and provides a theoretical basis for mine rational design stope structure size parameters. In this study, we used a large-scale tungsten mine in Jiangxi Province as the engineering background and performed on-site engineering

Prediction of open stope hangingwall stability using

The stope design method was found to be the most sensitive variable among all variables evaluated, with an importance score of 0.168 out of 1. The RQD and HW height also had a strong influence on the stability of an open stope HW. AB - The prediction of open stope hangingwall HW stability is a crucial task for underground mines.

Probabilistic stability analysis of open stopes in sublevel

Assessing of the effect of stope geometry on the probability of tensile failure POF has pointed out that three parameters, which are the stope hanging wall HR, stope span width and stope hanging wall dip, have a strong influence on the stope stability state.

Effect of Stope Undercutting On Its Wall Overbreak U.S.

One factor that could have a significant influence on stope overbreak is the undercutting of the stope into the walls. Undercutting stope walls is often necessary, in particular in narrow vein mines. This paper presents a numerical model parametric study to examine the influence of stope undercutting on its wall overbreak using geomechanical data from the Lapa mine of Agnico Eagle Mines Limited.

Evaluation of the effect of geometrical parameters on

2019. 5. 1.& 0183; The effect of stope hanging wall HR, stope span width and stope hanging wall dip were evaluated for three groups of stopes, having different average values of span width 4 m, 8 m and 12 m , with every group divided in three hanging wall HR egories 2.5–5 m, 5–7 m and 7–10 m and each egory of HR varied the hanging wall dip in four classes of 20°–45°, 45°–60°, 60°–75

Departemen Teknik Pertambangan

Judul Penelitian : Influence of Stope Design on Hanging Wall Decline in Cibaliung Underground Gold Mine . Detail ; Info Penilitian; Abstrak . Cibaliung Underground Gold Mine applies cut and fill mining method to optimize ore production and maintain underground stability.

Probabilistic Stope Design Australian Centre for

References. Capes, GW 2009, Open Stope Hanging Wall Design Based on General and Detailed Data Collection in Rock Masses Unfavourable Hanging Wall Conditions, PhD thesis, University of Saskatchewan, Saskatchewan. Clark, LM and Pakalnis, RC 1997, ‘An empirical design approach for estimating unplanned dilution from open stope hanging walls and footwalls’, Proceedings of the CIM

PDF Tesis Phd jcwang OPEN STOPE DESIGN Ricardo

Tesis Phd jcwang OPEN STOPE DESIGN. R. Salas Iparragu Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 37 Full PDFs related to this paper. READ PAPER. Tesis Phd jcwang OPEN STOPE DESIGN. Download. Tesis Phd jcwang OPEN STOPE DESIGN.

Stope reconciliation - ACG website

& 0183; 2017. 11. 1.& 0183; given a stope’s CMS and design, the stope performance statistics will be automatically generated with an mXrap stope optimisation app. Furthermore, an additional mXrap app will provide a probabilistic forecast of overbreak and underbreak for a given stope design, historical site-specific stope performance, and factors that influence performance.

Optimization calculation of stope structure parameters

Mathews stability graphic method, based on the rock classifi ion system, measures the stability of the ore roof area of a relatively simple calculation method and provides a theoretical basis for mine rational design stope structure size parameters. In this study, we used a large-scale tungsten mine in Jiangxi Province as the engineering background and performed on-site engineering

Evaluation on the instability of stope mining influenced by

Open stope mining is the most common mining method adopted in underground metal mines in Myanmar. However, the assessments on the stability of stope still remain quite limited for this method. Even though mining objective is to recover ore as much as possible from the vein, safety of workers and machinery in the advancing stopes must be ensured.

Open Stope Stability Using 3D Joint Networks

& 0183; 2019. 1. 12.& 0183; investigated surface back, hanging wall etc. of an excavation,Fig. 4. A stope is considered to be stable, in transition or susceptible to caving. Over the years a series of zones of relative stability have been suggested. Potvin and Hadjigeorgiou 2001

Probabilistic stability analysis of open stopes in sublevel

Assessing of the effect of stope geometry on the probability of tensile failure POF has pointed out that three parameters, which are the stope hanging wall HR, stope span width and stope hanging wall dip, have a strong influence on the stope stability state.

Underground design and deformation based on surface

This thesis presents a method for improving underground excavation design by relating geometry and deformation to the stability of hanging wall surfaces of open stopes. Instability on a stope hanging wall occurs when the opening geometry increases past a stable limit. There are no realistic methods of predicting surface deformation or projecting future deformation with continued mining

Probabilistic Stope Design Australian Centre for

References. Capes, GW 2009, Open Stope Hanging Wall Design Based on General and Detailed Data Collection in Rock Masses Unfavourable Hanging Wall Conditions, PhD thesis, University of Saskatchewan, Saskatchewan. Clark, LM and Pakalnis, RC 1997, ‘An empirical design approach for estimating unplanned dilution from open stope hanging walls and footwalls’, Proceedings of the CIM

Effect of stope construction parameters on ore dilution in narrow

& 0183; 2019. 10. 20.& 0183; Figure 2.10 Influence of wall undermining on stope relaxation, Wang et al. 2002 Table 2.1 ELOS ranges within design zones Table 4.6 Hanging-wall and footwall stability

Ore-Skin Design to Control Sloughage in Underground Open Stope

& 0183; 2015. 8. 31.& 0183; Influence of undercuts on the relaxation zone extent after Wang, 2004 . of ore unmined along the HW or the footwall FW to control stope wall instability and such as the effect of ore-skin design on the stability of the stope HW and on the resulting ore dilution.

Examining the Influence of Stope Strike Length On

Unplanned ore dilution caused by stope wall overbreak can have severe impact on the economics of a mining operation. Parameters like rock mass properties, in situ stress regime, and stope design and construction are known to be contributory factors to ore dilution in open stope

Optimization calculation of stope structure parameters

Mathews stability graphic method, based on the rock classifi ion system, measures the stability of the ore roof area of a relatively simple calculation method and provides a theoretical basis for mine rational design stope structure size parameters. In this study, we used a large-scale tungsten mine in Jiangxi Province as the engineering background and performed on-site engineering

‪Ridho Kresna Wattimena‬ - ‪Google Cendekia‬

Influence of stope design on stability of hanging wall decline in cibaliung underground gold mine H Shimada, T Sasaoka, RK Wattimena, K Matsui International Journal of Geosciences 2013 , 2013

Minimizing dilution in open stope mining with a focus

DOI: 10.14288/1.0081111 Corpus ID: 111418298. Minimizing dilution in open stope mining with a focus on stope design and narrow vein longhole blasting inproceedings Clark1998MinimizingDI, title= Minimizing dilution in open stope mining with a focus on stope design and narrow vein longhole blasting , author= L. Clark , year= 1998

INTERNATIONAL JOURNAL OF SCIENTIFIC and TECHNOLOGY

& 0183; 2017. 8. 15.& 0183; Stope design was based on the combination of Hydraulic Radius HR which defines the Stope geometry together with a Matthews stability Number N’ which defines the rock mass conditions. Figure 2: also evident that damages on the hanging wall

Rock Mechanics Study of Shaft Stability and Pillar Mining,

& 0183; dimensional stope and shaft analyses using UTAH2 Pariseau the effects of mesh size, the effects of including the hanging and others, 1991 ,5 a computer program that handles cutting wall drift, the amount of computational effort required, and the and filling of initially stressed anisotropic rock masses.

‪Ridho Kresna Wattimena‬ - ‪Google Cendekia‬

Influence of stope design on stability of hanging wall decline in cibaliung underground gold mine H Shimada, T Sasaoka, RK Wattimena, K Matsui International Journal of Geosciences 2013 , 2013

stope SPE

Still, stope design guidelines had to be elaborated to mitigate hanging wall overbreak and sustain a high mining rate from narrow vein stopes as many as four per week at acceptable costs. This paper presents a database of 105 stopes, mined between July 2014 and November 2016, which collated more than 50 parameters defining spatial, geometrical, geomechanical, geological and stope performance

Numerical Modeling of Paste Sills in Underhand Cut and Fill Stopes

& 0183; 2012. 8. 30.& 0183; and stope dip. The backfill properties assigned are for a Mohr-Coulomb type of material with strain-softening behaviour where integrity is lost after 1.5% strain Swan and Brummer, 2001 . The resultant mode of failure was analysed for various stope dips with cohesion on the hanging wall

Determination of the key parameters of high‐position hard roofs

& 0183; ence on stope stability, remain uncertain. In this study, a mechanical model of the “coal wall–hydraulic support–gangue” support system is established by considering the effective loading acting on HHRs, through which modified expressions for the periodic breaking span and impact kinetic energy of the stope are deduced. Based

Minimizing dilution in open stope mining with a focus

DOI: 10.14288/1.0081111 Corpus ID: 111418298. Minimizing dilution in open stope mining with a focus on stope design and narrow vein longhole blasting inproceedings Clark1998MinimizingDI, title= Minimizing dilution in open stope mining with a focus on stope design and narrow vein longhole blasting , author= L. Clark , year= 1998

GUIDELINES ON SAFETY BUND WALLS

& 0183; 2021. 4. 4.& 0183; influence on wall stability over time; d where necessary, appropriate designs of rock reinforcement are applied Page 4 Issued: December 1997 Version 1.0. Department of Industry and Resources these design criteria, the bund wall is to be positioned at least 10m away from the final pit wall

WEAK ROCK MASS DESIGN FOR UNDERGROUND MINING OPERATIONS

& 0183; design curves Lang 1994 for back spans of manned entries and a stability graph Clark and Pakalnis 1997 for longhole wall design for nonentry operations. The distribu-tion of the original databases was based on Canadian min-ing data, as summarized in Figure 3, and shows the lack of

Crown pillars - QueensMineDesignWiki

2019. 6. 28.& 0183; To design these crown pillars, an understanding of the rock mass characteristics of the ore zone and host rocks is required . Several key factors for pillar sizing include : Orebody geometry especially dip and width Most likely failure mode of crown pillar; Most likely failure mode for the hanging wall and footwall rocks

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influence of stope design on stability of hanging wall