Shrinkage Stoping definition of Shrinkage Stoping in the Free Online Encyclopedia.

shrinkage stoping [′shriŋ·kij ‚stōp·iŋ]

(mining engineering)

A modification of overhead stoping, involving the use of a part of the ore for the purpose of support and as a working platform. Also known as back stoping.

Shrinkage Stoping

periodic filling of a worked-out space with ore broken out from the main body during underground mining of a deposit. The filling takes place as a result of blasting of ore from the rock mass. The accumulated ore serves as a platform for the miners working in the stope (stoping block) and, to a certain extent, prevents exfoliation of the enclosing rock. The enclosing rock is supported by means of interchamber and interfloor pillars of ore, unexcavated ore-free sections, and the broken mass, if it is raised after working out the reserves of the block. To reduce losses when using shrinkage stoping systems for the extraction of a valuable mineral from thin beds, the cutting is done without drift and entry pillars, replacing them with stulls and other types of support. Upon completion of stoping in the block, the accumulated ore is emptied completely.

In addition to the conventional shrinkage stoping system, when the broken ore (mineral) fills the worked-out space to the full height of the block (or level), there is also a version of the system with partial shrinkage stoping, in which the broken ore fills the worked-out space for only part of the height of the block (bed or sublevel).

The shrinkage stoping method is most suitable for lode deposits 0.5 to 4-5 m thick with persistent bedding and an angle of not less than 60°, which are represented by hard, stableores and stable enclosing rock. In the case of very thick beds, the shrinkage stoping system can be used only at an extremely steep dip angle (85°-90°).

REFERENCE

Agoshkov, M. I., S. S. Borisov, and V. A. Boiarskii. Razrabotka rudnykh i nerudnykh mestorozhdenii, 2nd ed. Moscow, 1970.

A. S. VORONIUK

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No references found	The thicker, richer gold intercepts in the flattened zone may be amenable to lower cost, modern mechanized mining methods as compared to the shrinkage stoping carried out historically in the steeper portions of the veins. Canarc Resource Corp.: High Grade Gold Intersected by Phase 2 Infill ... by Business Wire A wide range of activities have advanced, including: - Preliminary rock mechanics evaluation by Rock Engineering International (REI) and Call & Nicholas, Tucson AZ, (supported by laboratory testing at the University of Arizona) has confirmed to The Winters Company (TWC), Tucson AZ, the suitability of Mechanized Shrinkage Stoping as a primary underground mining method and TWC is proceeding with detailed underground mine design and production scheduling. Orvana Reports Don Mario Drill Results and Feasibility Study Status by Business Wire Efficient longhole stoping will be utilized to extract 75 per cent of the ore with mining widths up to 30 meters, while shrinkage stoping will be applied for the 25 per cent of reserves contained in narrower zones. REDFERN RESOURCES - POSITIVE FINAL FEASIBILITY FOR TULSEQUAH by Business Wire	Shrike shrimp Shrine shrine chapel Shrink DIP shrink fit shrink forming shrink ring shrink rule shrink wrapping shrink-mixed concrete shrink-wrapped software Shrinkage Shrinkage Cavity shrinkage crack shrinkage cracking shrinkage index shrinkage joint shrinkage limit shrinkage loss Shrinkage of Textiles shrinkage pore shrinkage ratio shrinkage reinforcement shrinkage rule Shrinkage Stoping shrinkage-compensating shrinking of the plane shrinking space shrinking transformation Shripad Amrit Dange Shripati Shrirangapattana Shriver, Robert Sargent shriving pew Shropshire Shropshire sheep shroud shrouded propeller Shrove Monday Shrove Tuesday Shrovetide shrub Shrub Mounds shrub-coppice dune shrubbery Shrubs shrunk joint SHS virus sht Shtakenshneider, Andrei	shrink-spot porosity shrink-wrap shrink-wrapped shrink-wrapped software shrink-wrapped software shrink-wrapping shrink-wraps shrinkable shrinkable shrinkable shrinkable shrinkage shrinkage shrinkage shrinkage shrinkage shrinkage cavity shrinkage crack shrinkage cracking Shrinkage Factor shrinkage index Shrinkage Joint Shrinkage Joint Shrinkage limit shrinkage loss Shrinkage of Textiles shrinkage pore shrinkage ratio shrinkage reinforcement shrinkage rule Shrinkage Stoping shrinkage, casting shrinkage-compensating Shrinkage-Reducing Admixture shrinkages shrinkages shrinkages shrinkages shrinkages shrinker shrinker shrinker shrinker shrinkers shrinkers shrinkers shrinking shrinking shrinking shrinking shrinking asset Shrinking Assets shrinking field technique shrinking from shrinking from shrinking from Shrinking head shrinking into shrinking into shrinking into shrinking lung

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The thicker, richer gold intercepts in the flattened zone may be amenable to lower cost, modern mechanized mining methods as compared to the shrinkage stoping carried out historically in the steeper portions of the veins.

Canarc Resource Corp.: High Grade Gold Intersected by Phase 2 Infill ... by Business Wire

A wide range of activities have advanced, including: - Preliminary rock mechanics evaluation by Rock Engineering International (REI) and Call & Nicholas, Tucson AZ, (supported by laboratory testing at the University of Arizona) has confirmed to The Winters Company (TWC), Tucson AZ, the suitability of Mechanized Shrinkage Stoping as a primary underground mining method and TWC is proceeding with detailed underground mine design and production scheduling.

Orvana Reports Don Mario Drill Results and Feasibility Study Status by Business Wire

Efficient longhole stoping will be utilized to extract 75 per cent of the ore with mining widths up to 30 meters, while shrinkage stoping will be applied for the 25 per cent of reserves contained in narrower zones.

REDFERN RESOURCES - POSITIVE FINAL FEASIBILITY FOR TULSEQUAH by Business Wire