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Proceedings : New Technology for Coal Mine Roof Support

By Barczak, Thomas M.

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Book Id: WPLBN0000066619
Format Type: PDF eBook
File Size: 76.1 MB
Reproduction Date: 2005
Full Text

Title: Proceedings : New Technology for Coal Mine Roof Support  
Author: Barczak, Thomas M.
Volume:
Language: English
Subject: Health., Medical research, Medical reports
Collections: Medical Library Collection
Historic
Publication Date:
Publisher: Centers for Disease Control and Prevention

Citation

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Barczak, T. M. (n.d.). Proceedings : New Technology for Coal Mine Roof Support. Retrieved from http://netlibrary.net/


Excerpt
ABSTRACT: Roof falls continue to be the greatest single safety hazard faced by underground coal miners. During 1996- 99, 44 coal miners lost their lives in rock falls, and nearly 2,400 were injured. In addition, nearly 6,000 noninjury roof collapses were reported. Roof supports are installed to protect the miners, but support system failures contributed to most of these incidents. Reducing the terrible toll taken by ground falls continues to be a major goal of research by the National Institute for Occupational Safety and Health (NIOSH). The purpose of these proceedings is to provide the mining community with a comprehensive survey of coal mine roof supports. Drawing on many years of research undertaken by the NIOSH Pittsburgh and Spokane Research Laboratories, this volume describes what types of support are available, how they work, and when they should be used. The major subjects covered include roof bolts, standing roof supports, cable supports, and longwall shields. Some special topics are also addressed, including an analysis of roof fall accident statistics, techniques for better skin control, material handling considerations, and longwall mining through recovery rooms. This proceedings volume also contains information on several important new technologies, which are described here for the first time...

Table of Contents
CONTENTS Abstract . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 GENERAL SUPPORT CONSIDERATIONS Roof and rib fall incidents and statistics: a recent profile, by D. M. Pappas, E. R. Bauer, and C. Mark, Ph.D. . . . . . . 3 Fundamentals of coal mine roof support, by C. Mark, Ph.D., and T. M. Barczak . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 PRIMARY ROOF SUPPORT Trends in roof bolt application, by D. R. Dolinar and S. K. Bhatt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Assessing coal mine roof stability through roof fall analysis, by G. M. Molinda, C. Mark, Ph.D., and D. R. Dolinar . 53 Load behavior of grouted bolts in sedimentary rock, by S. P. Signer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 Summary of field measurements of roof bolt performance, by C. Mark, Ph.D., D. R. Dolinar, and T. M. Mucho . . . . 81 Skin failure of roof and rib and support techniques in underground coal mines, by E. R. Bauer and D. R. Dolinar . . . 99 Design of roof bolt systems, by C. Mark, Ph.D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 SECONDARY ROOF SUPPORT Design methodology for standing secondary roof support systems, by T. M. Barczak, T. P. Mucho, and D. R. Dolinar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133 Optimizing secondary roof support with the NIOSH Support Technology Optimization Program (STOP), by T. M. Barczak . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151 Cable support in longwall gate roads, by D. R. Dolinar and L. A. Martin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165 Material handling considerations for secondary roof support systems, by T. M. Barczak . . . . . . . . . . . . . . . . . . . . . . . 193 LONGWALL SHIELDS NIOSH safety performance testing protocols for standing roof supports and longwall shields, by T. M. Barczak . . . . 207 Examining longwall shield failures from an engineering design and operational perspective, by T. M. Barczak . . . . . 223 Factors to consider when purchasing a new set of longwall shields, by T. M. Barczak . . . . . . . . . . . . . . . . . . . . . . . . . 245 GROUND CONTROL INSTRUMENTATION Instruments for monitoring stability of underground openings, by M. K. Larson, D. R. Tesarik, J. B. Seymour, and R. L. Rains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253 Evaluation of ground support at a trona mine using instrumented cable and rebar bolts, by L. A. Martin, C. A. Dreesbach, and R. Pakalnis, Ph.D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271

 

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