breath stope mining

breath stope mining eco friendly grinding

breath stope mining eco friendly grinding Stoping - Wikipedia. Stoping is the process of extracting the desired ore or other mineral from an underground mine, leaving behind an open space known as a stope. Stoping is used when the country rock is sufficiently strong not to collapse into the stope, although in most cases artificial support is

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stope | mining | britannica

Other articles where Stope is discussed: mining: Underground mining: …of extracting ore are called stopes or rooms. There are two steps involved in stoping. The first is development—that is, preparing the ore blocks for mining—and the second is

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【open_stope_mining】什么意思_英语open_stope_mining的

Stope ground pressure control is a key issue in an open stope mining process. 采场地压控制是空场采矿法开采工艺的关键环节。

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mining stope development method

2017-3-30 · Many mining companies combine costs of general and stope development for accounting purposes, whereas others include stope-development costs as a part of the stoping cost. In this discussion, distinction is made between general development and stope preparation

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types of underground mining method comparison

2017-3-16 · C, Fig. 2, is a wide raise or raise stope, which is one method of opening an overhand stope, and E is a drift stope, which is a term used in the Lake Superior copper mines and means a wide and high drift as a start for the overhand stoping. Longitudinal Back, Flat-Back Mining

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open stope design, projects, research foci - rock

2016-7-6 · Open stope design Open stope design and sequences in highly stressed rock masses. This research project was developed following the successful completion of a similar (confidential) research project completed at Placer Dome’s Kanowna Belle Mine during 2002-2003

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transverse longhole stoping - queensminedesignwiki

2019-6-28 · Transverse longhole stoping is a bulk mining method in which the long axis of the stope and access drifts are perpendicular to the strike of the orebody. Typically drawpoints are located in under-cut access drifts which extend from the footwall, and the free face is mined in a horizontal retreat from the hanging wall to the footwall

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sub-level open stoping - queensminedesignwiki

2019-6-28 · The mining of the stope progresses from the opening raise toward the manway (left) and the stope is progressively being mined, with the pillar left as support (right). [6] The first round of drilling will be right beside the slot and will retreat back towards the level access or edge of the orebody

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breath stope mining

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