Mining or in situ disintegration of hard material – Mine layouts
Patent
1976-10-05
1977-10-11
Purser, Ernest R.
Mining or in situ disintegration of hard material
Mine layouts
299 30, 299 64, 175 52, 175103, E21C 2724, E21C 4100
Patent
active
040531821
ABSTRACT:
A shaft is formed from ground level downwardly to a subterranean seam of coal or other solids following preliminary survey procedures to locate the seam and establish its dimensions. A passage is cut radially into the coal seam and away from the shaft near the bottom thereof while coal cuttings are removed and delivered to ground level. The seam is then cut on an arcuate path centered on said shaft along the entire length of the radial passage while coal cuttings continue to be removed and delivered through the shaft to ground level. The mining apparatus is modular and comprises plural mining modules to be placed in the coal seam by a placement and advancing unit which is lowered in the shaft. A rotational driving unit is subsequently lowered in the shaft to drive coupled mining modules in unison through the coal seam on said arcuate path. In addition, self-propelled modules can drive themselves radially from the shaft outwardly into the seam and under remote control from ground level can propel themselves on a second path, e.g., an arcuate or, if desirable, a straight path, along one side of the radial cut.
REFERENCES:
patent: 449459 (1891-03-01), Addison
patent: 2147214 (1939-02-01), Perebaskine et al.
patent: 2550330 (1951-04-01), Coyle
patent: 2889137 (1959-06-01), Walker
patent: 3221824 (1965-12-01), Self
patent: 3301337 (1967-01-01), Vaughn et al.
Baughman Ray M.
Purser Ernest R.
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