By Marat Abzalov
This ebook presents an in depth evaluation of the operational rules of recent mining geology, that are provided as an outstanding mixture of conception and perform, permitting use via a extensive variety of experts, from scholars to teachers and skilled geologists.
The ebook comprises entire descriptions of mining geology options, together with traditional tools and new ways. The attributes offered within the booklet can be utilized as a reference and as a advisor through mining experts constructing mining tasks and for optimizing mining geology techniques. functions of the tools are defined utilizing case experiences and are facilitated through the pc scripts further to the ebook as digital Supplementary Material.
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The control points should be chosen in such manner that ensures their location as close as possible to the centre of the overlapping pair of stereo images. Camera positions and physical layout of the data acquisition process need to be determined and ensured that it is feasible for a given camera and lens configuration. As a rule Á of thumb Separation between cameras the ratio Distance from cameras to mine face should be within the range from 1/6 to 1/8. Camera should be used with tripod equipped with spirit level for ensuring the horizontal and non-tilted position.
The surveying stations are firmly attached to the backs of workings by surveyors who usually screw them into holes drilled by portable electric drill using diamond drill bits. To measure distance from the survey station to the marks on the walls it is necessary to attach to the station a string with weight on the its end and then measure distance to the reference mark from the weight projected to the floor of the working. Faces of the ore drifts are mapped and sampled regularly when they developed through mineralisation (Fig.
6). Caving is induced by undercutting of a block. This is made by blasting the narrow ore slice located underneath of a block and removing of the blasted ore (Fig. 6). This creates a void beneath the block (undercut) and leaves the overlaying rock mass unsupported. As a consequence of removal this support the rocks fracturing, which was induced by the undercut blasting, starts spreading through the entire block due to the gravity force. 2 Block cave mines Mine Country Deposit type El Teniente Andina Salvador Northparkes San Manuel Tongkuangyu Freeport Henderson Chile Chile Chile Australia USA China Indonesia USA Palabora South Africa South Africa South Africa South Africa Copper-porphyry stockwork Copper-porphyry stockwork Copper-porphyry stockwork Copper-porphyry stockwork Copper-porphyry stockwork Copper-porphyry stockwork Copper-porphyry stockwork Molybdenum-porphyry stockwork Copper-iron-gold carbonatite Diamond bearing kimberlite pipe Diamond bearing kimberlite pipe Diamond bearing kimberlite pipe Flinsch Premier Kimberley breaks into small pieces which falls to the bottom of a stope (cave) where they are extracted through draw points (Fig.
Applied Mining Geology by Marat Abzalov