what is stopeand pillarmining method

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    Underground hard rock mining refers to various underground mining techniques used to excavate hard Room and Pillar mining The method works best

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  • The strength of hard rock pillars Rocscience

    or more underground openings Hence all underground mining methods utilize pillars either temporary or developed for room and pillar mining of horizontal coal seams and that the value of K is only typical for carried out using room and pillar and stope and pillar methods with long 76m narrow rib pillars formed in

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  • Room and pillar mining Wikipedia

    Retreat mining is often the final stage of room and pillar mining Once a deposit has been exhausted using this method the pillars that were left behind initially are removed or quot pulled quot retreating back towards the mine 39 s entrance After the pillars are removed the roof or back is allowed to collapse behind the mining area

  • วิชา Underground Mining and Mine Design สภาวิศวกร

    1 Cut and fill stoping 2 Square set stoping 3 Stope and pillars 4 Shortwall mining คำตอบที่ถูกต้อง 3 ข้อที่ 20 ข้อใดคือเหมืองใต้ดินที่ต้องการการค้ำยัน Supported methods 1 Stull stoping 2 Longwall mining 3 Sublevel caving 4 Shrinkage stoping คำตอบที่ถูกต้อง 1 ข้อที่ 21 อะไรคือข้อได้เปรียบของการทำเหมืองแบบ nbsp

  • Optimum mining method selection using fuzzy analytical hierarchy

    For this purpose a questionnaire was prepared and was given to the associated experts Finally after a comparison carried out based on the effective factors between the four mining methods including area mining room and pillar cut and fill and stope and pillar methods the stope and pillar mining method was selected nbsp

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    Room and Pillar Method of Open Stope Mining onemine org Room and Pillar Method of Open Stope Mining Open Stope Mining MINE DESIGN The basic design of

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  • Selection of the most appropriate underground mining method for

    Abstract One of the major challenges facing an underground mine planner is selection of the most appropriate mining method to extract the ore Sareke Copper ore being flat and tabular favours the application of room and pillar and or stope and pillar mining methods Though these mining methods may be preferred for nbsp

  • Key Deposit Indicators KDI and Key Mining Method Indicators KMI

    non coal mining Haycocks 1992 The stope and pillar mining method utilizes the same principle of excavating a grid and leaving pillars behind as room and pillar but has been adapted to function in harder rocks and a wider variety of ore deposits The optimal KDIs for stope and pillar mining are shown in Table 10

  • Geomechanical issues in longwall mining – an introduction TU

    9 Jul 2015 For room and pillar mining continuous mining is the most common method A con tinuous mining machine Room and pillar mining is not only used for coal but also for other resources such as salt and potash deposits ported by both the stope and the powered supports The maximum roof pressure

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    The types of mining methods in underground mining are room and pillar mining longwall mining sublevel stopping cut and fill mining block caving and sublevel caving Cut and Fill Mining A method of removing ore from vertical veins starting at the bottom of the stope and moving upwards After getting the ore they nbsp

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  • Transverse Stoping University of Saskatchewan

    Underhand Stoping – Stability of the Orebody is very poor or there is no access to the lower part of the orebody – Examples Underhand Cut and Fill used in narrow veins at depth or underhand Blast hole open stoping used for bulk mining – Workers are always standing on solid ore and below supported or filled back

  • Mining methods and method selection Springer Link

    of the stope and typically the immediate proximity of a stope and its related service openings may impose In this caving method of mining rock performance is the geomechanical antithesis of that generated in the pillar mining consists of a strong competent orebody and near field rock medium with a low frequency nbsp

  • Hard rock room and pillar QueensMineDesignWiki

    19 Aug 2014 The development into the ore body for the post pillar mining method is similar to classic room and pillar on the first pass A main haulage The stopes are driven off this haulage way in an opposite direction so that the slope of the stope and the haulage way is appropriate for trackless equipment Once an nbsp

  • Towards an Improved Stone Mine Pillar Design Methodology

    methods for underground mine pillar design in hard rock In this paper we differentiate between hard rock four for room and pillar mining with a checkerboard pattern using this method The Obert and Duvall Method is 1 Hedley D G F and F Grant Stope and Pillar Design for the Elliot Lake Uranium Mines CIM nbsp

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  • Selection of the most appropriate underground mining method for

    One of the major challenges facing an underground mine planner is selection of the most appropriate mining method to extract the ore Sareke Copper ore being flat and tabular favours the application of room and pillar and or stope and pillar mining methods Though these mining methods may be preferred for extracting nbsp

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  • Go as deep as you dare at Adventure Mine News Sports Jobs

    6 Jul 2017 The wet weather conditions have settled in the damp shafts where mining helmet lights illuminate tiny water bubbles in the foggy air and the sloping walls of the mine typical of stope and pillar mining The Trammer 39 s Tour lasts 45 minutes to one hour but if people want a longer tour take the Prospector 39 s

  • Inglés pdf SciELO SA

    Although the traditional mining methods are divided into eighteen extraction methods each of which may include several different alternatives 12 Among the methods not included in the above list are the stope and pillar mining vertical crater retreat mining VCR strip mining and novel extraction methods such as hydraulic nbsp

  • Sublevel stoping Underground mining methods

    Sublevel stoping Underground mining methods the stopes can begin a process of caving when they started is hard to stop and much of the infrastructure and

  • Underground mining techniques Universidade

    Underground Mining Methods and Applications FIGURE 1 3 Post room and pillar mining mined out Numbers indicate sequence of

  • Mine Tailings Disposal Methods 911 Metallurgist

    16 Jun 2017 Room and pillar mining is the basic method used in the United States today however longwall mining practiced widely in Europe is being practiced with or shafts by a variety of methods that include room and pillar block caving timbered stope open stope shrinkage stope sublevel stope and others

  • DEVELOPMENT OF EMPIRICAL RIB PILLAR Open Collections

    rib pillar design method for open stope mining The method is and p i l l a r mining The pillar stability graph and the pillar data base are used to examine the applicability of empirical methods commonly used in open stope rib pillar design The investigation 72 for the stope and pillar dimensions used in this thesis

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    MINING This section includes discussion and comment on the mining engineering and related aspects of the LoM Plans associated with the Material Properties Specifically comments are given on the applicability of the mining methods rock mechanics and geotechnical considerations ventilation and the planning nbsp

  • Underground mining hard rock Wikipedia

    Underground hard rock mining refers to various underground mining techniques used to excavate hard minerals usually those containing metals such as ore containing gold silver iron copper zinc nickel tin and lead but also involves using the same techniques for excavating ores of gems such as diamonds Soft rock nbsp

  • Topic 9 Mining Methods Part V Underground Mining ResearchGate

    ii Block caving Stope and Retreat vs Stope and Fill Ore Removal Unit Operations of Mining Prof Dr H Z Harraz Presentation Mining Methods 2 Room and pillar mining method has a low recovery rate a large percentage of ore remains in Underground mining room and pillar mining of thick seams – Benching

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  • Hardrock Mining Techniques Underground Mines Minings Method

    Underground hard rock mining refers to various underground mining techniques used to excavate hard Room and Pillar mining The method works best

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