Hydraulic method of mining coal

Mining or in situ disintegration of hard material – Processes

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

299 17, F21C 2560, E21C 4100

Patent

active

048787124

ABSTRACT:
Coal is mined using water jets to a remove a layer of thin horizontal slices of coal. The thickness of the layer is sufficiently small that elastic deformation of the roof of the layer due to settling will cause the roof to rest against the floor of the layer. A number of additional layers of slices are then extracted in the same manner, each immediately below the floor of the preceding layer. The thickness and location of these layers wiht respect to previous layers is such that elastic deformation of the roof of the first layer due to settling will cause the roof to rest against the floor of the last layer of slices. Through the sequential mining of layers in this manner from top to bottom, the entire seam of coal is extracted and the mine roof rests upon the mine floor without the need for artificial roof support.

REFERENCES:
patent: 2298599 (1942-10-01), Smith
patent: 4079999 (1978-03-01), Grimley
patent: 4479541 (1984-10-01), Wang
patent: 4496191 (1985-01-01), Choi et al.
Elements of Hydraulic Coal Mine Design, M. L. Heremic, Trans. Tech. Publications, 1982, TN803.J47, pp. 9-23, 62-104.
"Status of Hydraulic coal Mining in People's Republic of China", Fun Den Wang, Colorado School of Mines, 9-1987.
"Hydraulic Mining of Thick and Steep Coal Seams in the Soviet Union" by Vladimir M. Kolesnikov, Deputy Tech. Dir., Gidrougol Coal Prod. Assoc., Soviet Un. (May 1980).
"History of Hydraulic Mining at Kaiser" by D. M. Parkes, Manager, New Mines Develop Kaiser Resources LTD., Vancouver, British Columbia, Canada, May, 1980.
"Introduction to Hydraulic Mining and Jet Cutting" by Jacob N. Frank, Energy Research & Development Administration, U.S.A., May, 1976.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Hydraulic method of mining coal does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydraulic method of mining coal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic method of mining coal will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-79177

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.