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Results 1 - 7 of 7. A software program for designing web and barrier pillars for Highwall Mining. This article discusses highwall stability, reasons for early pull out of highwall miner holes, and geotechnical engineering and planning factors, as well as operating practices to improve highwall stability and minimize the risk of a trapped miner ...
اقرأ أكثرStability analysis of cemented paste backfill false roof in …
the paste filling mining technology has experienced rapid development, the research on the stability of false roof with highwall paste filling mining is limited. Juhugeng No. 7 mine false roof stability was analysed as a case study, which is located in Tianjun County of Haixi state, Qinghai province, about 5 km east-west and 1 km south-north.
اقرأ أكثرSlope stability calculation method for highwall mining with open …
Subsequently, the influence of highwall mining on the slope stability was evaluated using the rigid body-limit equilibrium method (LEM). The optimized coal pillar width is determined to maximize the recovery rate without compromising the slope stability. ... Slope Stability Analysis Based on Autocorrelated Shear Strength Parameters Geotechnical ...
اقرأ أكثرStability analysis of rib pillars in highwall mining under dynamic …
Stability analysis of rib pillars in highwall mining under dynamic and static loads in open-pit coal mine Haoshuai Wu, Yanlong Chen, Haoyan Lv, Qihang Xie, Yuanguang Chen, Jun Gu; Affiliations Haoshuai Wu State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology ... China University of ...
اقرأ أكثرAn analysis of the effect of auger mining on highwall stability
An analysis of the effect of auger mining on highwall stability DOI link for An analysis of the effect of auger mining on highwall stability By R.D. Caudle, Y.P. Chugh, V. Lall
اقرأ أكثرCDC - Mining - Analysis of Highwall Mining Stability - The …
Highwall mining has become a widely applied method in surface mining. It is commonly used alone or in conjunction with contour or slot mining. It provides 800 to 1,200 ft of additional recovery when, in contour mining, the …
اقرأ أكثرStability analysis of rib pillars in highwall mining under …
Highwall mining has great practical value in terms of industrial policy and mining efficiency. However, there is little research on highwall mining in China. Due to the dif-ferent application conditions of the highwall mining tech-niques, dierent coal rock occurrence and geological condi-tions in China and foreign countries, it is dicult to ensure
اقرأ أكثرProject > Highwall stability assessment - Barr Engineering
cost. $97,000. completion date. 2016. When planar-type, wedge-type catchment and bench failures were found in a highwall at its Marinette Quarry, Specialty Granules LLC wanted to assess the highwall's stability, identify potential hazards, and garner recommendations to achieve a stable slope and bench configuration for future mining ...
اقرأ أكثرA study of highwall mining panel stability - ScienceDirect
Stability analysis, incorporating LMS theory, complements conventional design techniques of highwall mining panels, where mobilised pillar strength is the sole consideration. …
اقرأ أكثرStability analysis of rib pillars in highwall mining under …
According to the established rib pillar instability model of the highwall mining system, it is found that when the mining opening width is 3 m, the reasonable width of the …
اقرأ أكثر(PDF) Analysis of Stability and Dimensioning of Openings/Pillars with ...
To increase economic benefits and mineable reserves, we present highwall mining method which can provide Moreover, to improve coal recovery ratio and to maintain stability of openings/pillars, the ...
اقرأ أكثرHigh wall slope stability assessment of open pit coal mine- A …
Figure 8 Disturbed area high wall slope stability analysis (NIRM Report, 2018) The high wall benches should be maintained 10m height by 5m width with a slope angle of 65 0. The recommended top and bottom inter ramp angle is 42 0 and 48 0with a platform of 25m at 735mRL, and final overall slope angle is 40 0 for high wall slope. Sandstone Sand ...
اقرأ أكثرGround Control Design For Highwall Mining - Centers for …
Highwall mining is an important surface coal mining method, and it may account for approximately 4% of total U.S. coal production. Highwall stability is the major ground control related safety concern. Ground control plans for highwall mining should specify hole width, web pillar width, barrier pillar width and number of holes between barriers.
اقرأ أكثرA study of highwall mining panel stability - ScienceDirect
Stability analysis, incorporating LMS theory, complements conventional design techniques of highwall mining panels, where mobilised pillar strength is the sole consideration. The stability analysis aims to ensure that the pillars deform in …
اقرأ أكثرClassification of Stability of Highwall During Highwall Mining: A ...
The depleting coal deposits day by day required the introduction of novel methods of mining like highwall mining. Highwall mining is a method of extraction of coal blocked in the highwall. The method involves considerable challenges in the area of roof control and most importantly the stability of the highwall itself. Highwall mining has gained considerable …
اقرأ أكثرMaptek - Highwall stability in longwall mining
The Maptek Sentry system was trialled alongside a radar system on LW10 and used exclusively for LW11. Both systems enabled near continuous, real-time, sub-millimetre monitoring of a full 100 m high x 500 m wide highwall. The Maptek laser system can scan the entire wall in six minutes, depending on the block size to be monitored.
اقرأ أكثرAnalysis Of Highwall Mining Stability - The Effect Of …
HWM has become a widely-applied method in surface mining, commonly used alone or in conjunction with contour or slot mining. It provides 800-feet to 1,200-feet of additional …
اقرأ أكثر"Analysis of Highwall Mining Stability-The Effect of Multiple …
The objective of this is paper is to review the current state of knowledge and practice in highwall mining (HWM). HWM has become a widely-applied method in surface mining, commonly used alone or in conjunction with contour or slot mining. It provides 800-feet to 1,200-feet of additional recovery when the economic stripping ratio is reached in contour mining or in slot mining …
اقرأ أكثرCase Study on Stability Analysis of Highwall Mining in …
The paper describes the stability analysis of High Wall Mining in south Deccan region of India. In the year (1983-2002) around 620 incidents happened under the working operation of high …
اقرأ أكثرStability Evaluation of Highwall Slope in an Opencast Coal …
The monitoring, analysis and stabilization of slopes is an integral part of the opencast and high wall mining operations during the entire life cycle of the project. Analyses must be based upon a model that accurately represents site sub-surface conditions, ground behavior, and applied loads. Consequences of failure Acceptances Criteria
اقرأ أكثرSimulationResearchfortheInfluenceofMiningSequenceonCoal …
efficiency, and economy. According to existing highwall mining methods, the mining sequence has a great influence on highwall stability. Based on a highwall mining project in Australia, this study adopted the FLAC3D numerical simulation method to investigate the stability of coal pillars with different mining sequences. The results show that ...
اقرأ أكثرThe Evolution of Data Capture and Analysis for Highwall Mining …
For decades, accurately assessing slope stability and other highwall characteristics has been challenging, expensive and dangerous. As technology continues to evolve, the tools used by highwall mining operations have advanced as well, ... Because highwall monitoring and analysis are so critical to highwall mining, there's a growing …
اقرأ أكثرMining – SkyGeo
Mining stability monitoring provides persistent geotechnical risk surveillance to identify areas of abnormal surface movement over time. ... SkyGeo is the market leader for InSAR analysis to detect and measure surface movement and understand them in terms of structural or ground water changes. ... but also for highwall slopes or longwall slopes ...
اقرأ أكثرWeb pillar stability in open-pit highwall mining | SpringerLink
The LDC100 highwall miner (Han et al. 2014) is used to extract the coal left under the west highwall of the open-pit mine.This is an unmanned mining machine with a production capacity of 60 t/h and a suited coal-rock hardness factor of f ≤ 2, which is applicable for recovery from lignite open-pit mines.The recovery chamber has a rectangular cross-section measuring …
اقرأ أكثرNumerical back-analysis of highwall instability in an open …
Rocscience's SLIDE3 3D limit equilibrium slope stability analysis program was selected as the primary tool for back-analysing the open pit highwall failure. 3D limit equilibrium analysis (in comparison to 2D) allows for the full incorporation of the complex geology and geometry of the pit wall, as well as the true relative
اقرأ أكثرSlope stability assessment approach for multiple seams Highwall Mining ...
The stability of slope during Highwall Mining also depends on the stability of intervening web pillars . The major hazard identified for Highwall and Auger Mining projects worldwide is slope failure [3], as this is a remotely operated mining method, with all men and most of the machineries located at the pit bottom during the operation.
اقرأ أكثرStability analysis of rib pillars in highwall mining under dynamic …
Download Citation | Stability analysis of rib pillars in highwall mining under dynamic and static loads in open-pit coal mine | The retained coal in the end slope of …
اقرأ أكثرSTABILITY ANALYSIS OF A LONGWALL MINING IN NARVA OIL …
and highwall slope stability analysis are handled separately. 5.1 Higwall slope stability analysis A properly designed barrier pillar plays a significant role in the stability of the highwall slope, …
اقرأ أكثرAnalysis of Highwall Mining Stability - The Effect of …
Analysis of Highwall Mining Stability - The Effect of Multiple Seams and Prior Auger Mining on Design 208 ABSTRACT The objective of this is paper is to review the current state of …
اقرأ أكثرSlope stability calculation method for highwall mining with …
Slope stability is a prominent problem for the efficient application and promotion of highwall mining technology, especially when mining residual coal under high and steep end-slope conditions.
اقرأ أكثرA Framework for Geotechnical Hazard Analysis in Highwall Mining …
Highwall mining operations can greatly benefit from accurate structural mapping of rock mass defects. The stability of these entries can be suitably assessed for any major roof failure by adopting discrete fracture network based structural modelling to characterize and delineate the regions of possible major roof failures to prevent damage to ...
اقرأ أكثر[PDF] Slope stability calculation method for highwall mining …
A slope stability calculation method is proposed based on rigid body-limit equilibrium theory that can quantify the influence of high wall mining operations on slope stability, which is significant for popularizing highwall mining technology. Slope stability is a prominent problem for the efficient application and promotion of highwall mining technology, …
اقرأ أكثرSlope Stability Analysis of Open Pit Highwall Mining Excavations …
The Highwall slope must remain stable during Highwall mining operation to ensure safety of workers and machinery. In this paper, Highwall slope stability is investigated with respect to different ...
اقرأ أكثرSite Browser - cdc.gov
Highwall stability remains a major concern during highwall mining. Geologic structure (hillseams) and pillar stability are the two major factors affecting highwall stability. ... Analysis of Safety Aspects and Mining Practices for Effective Ground Control in …
اقرأ أكثرStability Analysis of Rib Pillars in Highwall Mining Under …
Stability analysis of rib pillars in highwall mining under dynamic and static loads in open-pit coal mine Haoshuai Wu1 · Yanlong Chen1,* · Haoyan Lv2 …
اقرأ أكثر"Analysis of Highwall Mining Stability-The Effect of …
The objective of this is paper is to review the current state of knowledge and practice in highwall mining (HWM). HWM has become a widely-applied method in surface mining, commonly …
اقرأ أكثرGround Control for Highwall Miining - Centers for Disease …
of highwall mining; therefore, planning engineers can adjust the layout of highwall mining panels to locate barrier pillars within areas of questionable highwall stability. Inspection and monitoring-Daily inspection of the benches above the active highwall mining area is a prudent precautionary measure. A crack in a bench immediately above
اقرأ أكثرStability analysis of rib pillars in highwall mining …
Highwall mining has great practical value in terms of industrial policy and mining efficiency. However, there is little research on highwall mining in China. Due to the dif-ferent application …
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