Another way is to increase the efficiency of mine production Modifying the mining method and introducing new more powerful machines are actions that should raise the efficiency Roomandpillar mining is designed for flatbedded deposits of slices starting from the bottom of the stope and advancing upward Part of nbsp
Apr 14 2014 Following are considered as unsupported methods 1 Roomandpillar mining 2 Stopeandpillar mining 3 Shrinkage stoping 4 Sublevel stoping 11 1 Roomandpillar mining method Roomandpillar mining is very old method applied to horizontal or nearly horizontal deposits that has been nbsp
strike stabilizing pillars LSP sequential grid method SGM sequential down dip method SDD and Bord and pillar mining at depth appears to be a favourable approach because mining spans and therefore adapt rockengineering technologies mine layout stope and tunnel support systems etc to manage the nbsp
Roomandpillar mining is the most common unsupported method used primarily for flatlying seams or bedded deposits like coal trona limestone and salt Support of the roof is provided by natural pillars of the mineral that are left standing in a systematic pattern Stopeandpillar mining a stope is a production opening in
Aug 19 2014 The development into the ore body for the postpillar 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
stoping stull stoping and square set stoping unsupported room and pillar mining stop and pillar mining shrinkage stoping sublevel stoping and vertical crater retreat mining and caving longwall mining sublevel caving and block caving Apart from traditional methods there are novel methods such as underground nbsp
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 appliion of roomandpillar and or stopeandpillar mining methods Though these mining methods may be preferred for extracting nbsp
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 appliion of roomandpillar and or stopeandpillar mining methods Though these mining methods may be preferred for nbsp
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
mining methods 6 Advantages of various underground mining methods the final mining methods selected are room and pillar mining and sublevel stoping Table 6 drifts are driven the full length of the stope and the troughs are opened
Stoping is the process of extracting the desired ore or other mineral from an underground mine if one reaches the surface is known as a gunnis or coffen A common method of mining such vertical ore bodies is stull stoping see below
Method Longitudinal Stoping – Long axis of stope is parallel to orebody strike Transverse Stoping – Long slices or lifts starting at the bottom of a stope and advancing upwards Long room and pillar mining method Ore is mined from
Apr 3 2017 Classifiion of stoping methods A Stopes naturally supported 1 Open stoping a Open stopes in small ore bodies b Sublevel stoping 2 Open stopes with pillar supports a Casual pillars b Room or stope and pillar regular arrangement B Stopes artificially supported 3 Shrinkage stoping
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
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