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Borehole Mining, Underground Mining, Mining Techniques
Borehole mining consists of two pipes one for pumping down high pressure water and another that delivers slurry back to the surface. A BHM tool consists of water jet pump, hydro monitor section, an extension section and a hub. The tool is lowered into a well until the hydro monitor reaches the depth of the hole where the borehole mining is started.
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Borehole mining Wikipedia
Definition Borehole Mining (BHM) is a remote operated method of extraction (mining) of mineral resources through boreholes based on in-situ conversion of ores into a mobile form (slurry) by means of high pressure water jetting (hydraulicking). This process is carried-out from a land surface, open pit floor, underground mine or floating vessel through pre-drilled boreholes.
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Borehole Drilling and Borehole Mining Inyati Group
The third step involves the lowering of the borehole mining tool into the drill well. The method of mining requires less capital outlay than many other mining methods and it makes it possible to work in otherwise inaccessible areas that are too dangerous for conventional mining methods to be used.
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US20130106166A1 Horizontal Borehole Mining System and
A method and system are provided for horizontal borehole mining a seam of material, in which a substantially horizontal borehole is provided through a seam of material, a retractable casing is disposed within the seam, and a high pressure drilling tool is disposed within said casing for excavation of the seam material to form an excavation cavity, the high pressure drilling tool having a high
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Borehole mining method ABRAMOV GRIGORI A.
3. A borehole mining method as claimed in claim 2, wherein mining of rock material is started at the top of said production interval followed by sliding said device down into said borehole. 4. A borehole mining method as claimed in claim 1, wherein said borehole is driven sloping up, whereby said angle α resides in the range 0°<α<25°. 5.
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Borehole Wikipedia
A borehole is a narrow shaft bored in the ground, either vertically or horizontally. A borehole may be constructed for many different purposes, including the extraction of water, other liquids (such as petroleum) or gases (such as natural gas), as part of a geotechnical investigation, environmental site assessment, mineral exploration, temperature measurement, as a pilot hole for installing
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Lithologging Borehole Cores and Sampling techniques
Lithologging Borehole Cores and Sampling techniques By Purnajit Bhattacharjee December 28, 2016 Exploration Geology 0 Comments Lithologging of drill core of boreholes is an important stage in mineral exploration and it is done in reconnoitery, exploratory and evaluation stages of
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US6460936B1 Borehole mining tool Google Patents
A borehole mining tool comprising a drill string having an inner pipe column and an outer pipe column. Water is forced under high pressure down an annulus between the outer pipe and inner pipe. A hydromonitor is attached to the end of the drill string. A nozzle in the hydromonitor directs the pressurized water into a stope or work area, thereby loosening the material to be mined.
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The hydraulic borehole mining method
FIELD: mineral field development by hydraulic mining methods, as well as borehole drilling and all-purpose underground cavities creation. SUBSTANCE: device comprises connection pipe for pressure water. Connection pipe of slurry pipeline has conical constricted section, wear-resistant insert made as spaced rings of wear-resistant material
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Conventional and advanced borehole investigation methods
Borehole cameras, like all borehole investigation methods, are vulnerable to hang-ups if allowed to pass too far past the borehole breakthrough into the excavation. As a result, it is critical to plan borehole locations such that they intersect the void at an optimal location and angle to maximise view angles. However, irregularities in the
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