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Title: Explosive fluid transmitted shock method for mining deeply buried coal

Abstract

A method for recovering coal from deeply buried deposits comprising drilling a hole down into a coal seam, filling the hole with water, and periodically detonating an explosive charge at the bottom of the water-filled hole. The water transmits the explosive shock wave to the face of the coal seam, thereby fracturing and dislodging the coal. The resulting suspension of loose coal in water is then pumped to the surface where the coal is recovered and the water is recycled to the mining operation.

Inventors:
 [1]
  1. Pleasanton, CA
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
862576
Patent Number(s):
3964792
Assignee:
United States of America as represented by United States Energy (Washington, DC)
Patent Classifications (CPCs):
E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21B - EARTH DRILLING, e.g. DEEP DRILLING
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
explosive; fluid; transmitted; shock; method; mining; deeply; buried; coal; recovering; deposits; comprising; drilling; seam; filling; water; periodically; detonating; charge; bottom; water-filled; transmits; wave; fracturing; dislodging; resulting; suspension; loose; pumped; surface; recovered; recycled; operation; coal seam; shock wave; explosive charge; recovering coal; comprising drilling; deeply buried; /299/102/166/

Citation Formats

Archibald, Paul B. Explosive fluid transmitted shock method for mining deeply buried coal. United States: N. p., 1976. Web.
Archibald, Paul B. Explosive fluid transmitted shock method for mining deeply buried coal. United States.
Archibald, Paul B. Tue . "Explosive fluid transmitted shock method for mining deeply buried coal". United States. https://www.osti.gov/servlets/purl/862576.
@article{osti_862576,
title = {Explosive fluid transmitted shock method for mining deeply buried coal},
author = {Archibald, Paul B},
abstractNote = {A method for recovering coal from deeply buried deposits comprising drilling a hole down into a coal seam, filling the hole with water, and periodically detonating an explosive charge at the bottom of the water-filled hole. The water transmits the explosive shock wave to the face of the coal seam, thereby fracturing and dislodging the coal. The resulting suspension of loose coal in water is then pumped to the surface where the coal is recovered and the water is recycled to the mining operation.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1976},
month = {6}
}

Patent:

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