HOW TO ELIMINATE ROOF AND FLOOR FAILURES WITH YIELD PILLARS.

被引：0

作者：

Carr, Frederick ^{[1
]}

Martin, Eddie ^{[1
]}

Gardner, Bruce H. ^{[1
]}

机构：

[1] Jim Walter Resources Inc, Brookwood,, AL, USA, Jim Walter Resources Inc, Brookwood, AL, USA

来源：

Coal mining Chicago, Ill. | 1985年 / 22卷 / 01期

关键词：

ACCIDENT PREVENTION;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The article describes how application of the yield pillar principle has increased the profitability of Mines No. 3, No. 4, and No. 7 - all of which extract longwall panels. The method also enhances safety and extraction rates.

引用

页码：44 / 48

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[1] Problems of Working Coal Seams with Roof Caving in Shaft Pillars.
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