define the term orepass
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An ore pass is a vertical or near-vertical opening, which is created during underground mining operations to transfer materials. It is designed based on the gravitational force between different ground levels, in order to provide a convenient material handling system and reduce haulage distances.
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An ore pass is a vertical or near-vertical opening, which is created during underground mining operations to transfer materials. It is designed based on the gravitational force between different ground levels, in order to provide a convenient material handling system and reduce haulage distances.
Ore passes are used to drop mined ores into loading points or underground bins. The ores can be hoisted to the surface from the loading points. Unloading of ores from the passes can be carried out using underflow or side discharge chutes.
Ore passes are developed using two conventional methods: the mechanical method, which uses a raised borer, and drill and blast methods.
Alimak is one of the most common ore pass raising and drop-raising techniques. Ore passes need to be properly supported to ensure adequate safety. A number of support systems for ore passes are available, including the resin-grouted short cable bolts and resign-grouted rebar.
In some cases, ore passes require support through shotcrete or steel liners, in addition to the primary reinforcement systems.
There are two major types of ore pass systems: flow-through and full ore pass systems. In both cases, muck is dumped into the ore pass and transferred to an underground stockpile via a secondary transport method, such as a conveyor or rail car
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Ore passes are used to drop mined ores into loading points or underground bins. The ores can be hoisted to the surface from the loading points. Unloading of ores from the passes can be carried out using underflow or side discharge chutes.
Ore passes are developed using two conventional methods: the mechanical method, which uses a raised borer, and drill and blast methods.
Alimak is one of the most common ore pass raising and drop-raising techniques. Ore passes need to be properly supported to ensure adequate safety. A number of support systems for ore passes are available, including the resin-grouted short cable bolts and resign-grouted rebar.
In some cases, ore passes require support through shotcrete or steel liners, in addition to the primary reinforcement systems.
There are two major types of ore pass systems: flow-through and full ore pass systems. In both cases, muck is dumped into the ore pass and transferred to an underground stockpile via a secondary transport method, such as a conveyor or rail car
hope it's help you
☺☺☺
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