Longwall Gate Road Roof Instability and Methods of Control in the Lower Kittanning Coalbed of Central Pennsylvania: Fid-Bau Portal

Fachinformationsdienst BAUdigital

A platform for research: civil engineering, architecture and urbanism

Longwall Gate Road Roof Instability and Methods of Control in the Lower Kittanning Coalbed of Central Pennsylvania

E. R. Bauer / J. M. Listak / E. D. Krupa

The report presents the results of a cooperative study between BethEnergy Inc., Ebensburg, PA., a central Pennsylvania coal mining company, and the U.S. Bureau of Mines, to investigate longwall development entry roof instability. In-mine mapping of geologic and deformational features was conducted to reveal the major ground control problems encountered during gate road development. Underground measurements were made to delineate the in situ stress field and its effect on cutter roof failure. In addition, mining-induced pillar load monitoring was used to indicate development loading on variously dimensioned gate road pillars and to determine if pillar yielding occurred. Finally, visual observations of a variety of roof control methods determined the most effective support elements for controlling cutter roof failure.

Access

Check availability in my library

Page navigation

Document information

Export, share and cite

Longwall Gate Road Roof Instability and Methods of Control in the Lower Kittanning Coalbed of Central Pennsylvania

E. R. Bauer / J. M. Listak / E. D. Krupa

The report presents the results of a cooperative study between BethEnergy Inc., Ebensburg, PA., a central Pennsylvania coal mining company, and the U.S. Bureau of Mines, to investigate longwall development entry roof instability. In-mine mapping of geologic and deformational features was conducted to reveal the major ground control problems encountered during gate road development. Underground measurements were made to delineate the in situ stress field and its effect on cutter roof failure. In addition, mining-induced pillar load monitoring was used to indicate development loading on variously dimensioned gate road pillars and to determine if pillar yielding occurred. Finally, visual observations of a variety of roof control methods determined the most effective support elements for controlling cutter roof failure.

Longwall Gate Road Roof Instability and Methods of Control in the Lower Kittanning Coalbed of Central Pennsylvania

E. R. Bauer / J. M. Listak / E. D. Krupa

The report presents the results of a cooperative study between BethEnergy Inc., Ebensburg, PA., a central Pennsylvania coal mining company, and the U.S. Bureau of Mines, to investigate longwall development entry roof instability. In-mine mapping of geologic and deformational features was conducted to reveal the major ground control problems encountered during gate road development. Underground measurements were made to delineate the in situ stress field and its effect on cutter roof failure. In addition, mining-induced pillar load monitoring was used to indicate development loading on variously dimensioned gate road pillars and to determine if pillar yielding occurred. Finally, visual observations of a variety of roof control methods determined the most effective support elements for controlling cutter roof failure.

Access

Check availability in my library

Page navigation

Document information

Export, share and cite

Document information

Title:

Longwall Gate Road Roof Instability and Methods of Control in the Lower Kittanning Coalbed of Central Pennsylvania

Contributors:

E. R. Bauer (author) / J. M. Listak (author) / E. D. Krupa (author)

Publication date:

1992

Size:

29 pages

Type of media:

Report

Type of material:

No indication

Language:

English

Keywords:

Mineral Industries , Longwall mining , Underground supporting , Roofs , Underground mining , Pennsylvania , Mining engineering , Mine haulage , Loads(Forces) , Stability , Columns(Supports) , Roof bolts , Lower Kittanning Coalbed(Pennsylvania)

Similar titles

Longwall gob degasification with surface ventilation boreholes above the Lower Kittanning coalbed

Moore, T. D. / Deul, Maurice / Kissell, Fred N. | TIBKAT | 1976

Geologic factors causing roof instability and methane emission problems : the Lower Kittanning coalbed, Cambria County, Pa.

McCulloch, C. M. / Deul, Maurice | TIBKAT | 1973

Longwall roof control

Winstanley, A. | Engineering Index Backfile | 1931

Longwall roof control

Winstanley, A. | Engineering Index Backfile | 1932

Roof control in longwall workings

Carson, J.S. | Engineering Index Backfile | 1931