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Methods for working thick seams and research on increasing their effectiveness

Abstract

In Poland nearly 40 per cent of all coal is extracted from seams more than 3 m. thick. In absolute figures this represents about 70 million tons of coal per year. Working seams with thicknesses up to 3.5 m. does not present, at present, major difficulties. Working thicker seams calls for a steady improvement in order to increase the degree of utilizaion of the deposit and to enlarge the concentration of output. The seams are worked under protected surface structures which compels the mines to use hydraulic stowing with all its advantages and disadvantages. Rock burst hazard, the control of which is the basic problem hindering the mining, is a further problem. 3 refs.
Authors:
Publication Date:
Jan 01, 1976
Product Type:
Conference
Report Number:
CONF-7609200-
Reference Number:
EDB-79-046992
Resource Relation:
Conference: Symposium on thick seam mining by underground methods, Queensland, Australia, Sep 1976; Related Information: In: Thick seam mining by underground methods.
Subject:
01 COAL, LIGNITE, AND PEAT; COAL MINES; HAZARDS; RESEARCH PROGRAMS; ROOFS; SAFETY ENGINEERING; SUPPORTS; POLAND; BACKFILLING; COAL SEAMS; DIAGRAMS; EXPLOSIONS; ROCK BURSTS; ROCK MECHANICS; SEISMIC NOISE; SEISMIC WAVES; THICKNESS; UNDERGROUND MINING; COAL DEPOSITS; DIMENSIONS; ENGINEERING; EUROPE; GEOLOGIC DEPOSITS; MECHANICAL STRUCTURES; MINES; MINING; RESOURCES; 012000* - Coal, Lignite, & Peat- Mining; 016000 - Coal, Lignite, & Peat- Health & Safety
OSTI ID:
8536041
Research Organizations:
Central Mining Inst., Katowice, Poland
Country of Origin:
Australia
Language:
English
Submitting Site:
EI
Size:
Pages: 93-106
Announcement Date:
Mar 15, 2013

Citation Formats

Sikora, W. Methods for working thick seams and research on increasing their effectiveness. Australia: N. p., 1976. Web.
Sikora, W. Methods for working thick seams and research on increasing their effectiveness. Australia.
Sikora, W. 1976. "Methods for working thick seams and research on increasing their effectiveness." Australia.
@misc{etde_8536041,
title = {Methods for working thick seams and research on increasing their effectiveness}
author = {Sikora, W}
abstractNote = {In Poland nearly 40 per cent of all coal is extracted from seams more than 3 m. thick. In absolute figures this represents about 70 million tons of coal per year. Working seams with thicknesses up to 3.5 m. does not present, at present, major difficulties. Working thicker seams calls for a steady improvement in order to increase the degree of utilizaion of the deposit and to enlarge the concentration of output. The seams are worked under protected surface structures which compels the mines to use hydraulic stowing with all its advantages and disadvantages. Rock burst hazard, the control of which is the basic problem hindering the mining, is a further problem. 3 refs.}
place = {Australia}
year = {1976}
month = {Jan}
}