9.4.1c Stull Stoping | MNG 230: Introduction to Mining Engineering
9.4.1c Stull Stoping. This method is designed for rock masses that are weak but somewhat competent – not as weak to require square sets, but not sufficiently competent to use cut and …
Stoping - Wikipedia
Stull stoping is a form of stoping used in hardrock mining that uses systematic or random timbering ("stulls") placed between the foot and hanging wall of the vein. The method requires …
Beginners Guide to Stope Mining - An Underground Miner
2022年12月13日 · Two types of timbered stoping include stull stoping where timber is placed between the hanging wall and the foot of the narrow veins of the ore, and square set stoping …
Stoping Mining Methods - 911Metallurgist
2017年4月3日 · Figure 94 shows a stull-supported stope. Square-Set Stoping In square-set stopes the walls and back of the excavation are supported by regular framed timbers forming a …
Cut-and-fill and stull stoping are intended for moderately competent rock, whereas square-set stoping is suitable for the least competent rock. Supported methods have declined in use since …
Stope Mining Guide: Techniques & Methods Explored - Flyability
Stull stoping. Stull stoping uses seemingly random timbering, called stulls. The stulls are placed between the foot and hanging wall of the ore vein. Stull stoping is used in mines with strong …
4.3.2: Underground Mining Methods | MNG 230: Introduction to …
Shrinkage stoping is used to recover steeply dipping orebodies when the ore and host rock are reasonably competent. A stope, i.e., a large section of the mine where active production is …
(PDF) Underground mining Methods - ResearchGate
2010年2月1日 · Stull stoping is a supported mining metho d using timber or rock bolts in tabular , pitching ore bodies. It is one of the methods that can be applied to ore bodies tha t have...
9.4.1 The Supported Class of Mining Methods
Cut-and-fill and stull stoping is applicable to moderately competent rock, and square-setting is for the least competent rock. Mechanization requirements and labor costs have all but eliminated …
Several approaches have been used for the selection of optimum stoping method in hard rock underground mines. This paper critically reviews the available approaches with an aim of …