An investigation into the effects of a retreating longwall on a three-entry gateroad system
Conference
·
· Prepr., Soc. Min. Eng. AIME; (United States)
OSTI ID:6362875
This paper presents the final results of an in-mine case study conducted by the Bureau of Mines on a three-entry gateroad system utilizing the stiff-yield pillar design concept. The analyses of roof to floor convergence and roof bolt loading of headgate systems and tailgate chain pillar stresses are presented in detail as the longwall panels were mined. Stress distribution within pillars, relative stress changes between yield and abutment pillars, and the histories of pillar stress, roof to floor convergence, and roof bolt loading as a function of longwall movement are discussed.
- Research Organization:
- U.S. Bureau of Mines, Pittsburgh, Pennsylvania
- OSTI ID:
- 6362875
- Report Number(s):
- CONF-830317-
- Journal Information:
- Prepr., Soc. Min. Eng. AIME; (United States), Journal Name: Prepr., Soc. Min. Eng. AIME; (United States) Vol. 83-COAL-01; ISSN PMAID
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
012000* -- Coal
Lignite
& Peat-- Mining
COAL MINES
DISTRIBUTION
EQUIPMENT
LONGWALL MINING
MINE ROADWAYS
MINES
MINING
MINING EQUIPMENT
NATIONAL ORGANIZATIONS
ROOF BOLTS
STRATA CONTROL
STRATA MOVEMENT
STRESS ANALYSIS
STRESSES
SUPPORT PILLARS
TUNNELS
UNDERGROUND FACILITIES
UNDERGROUND MINING
US BUREAU OF MINES
US DOI
US ORGANIZATIONS
012000* -- Coal
Lignite
& Peat-- Mining
COAL MINES
DISTRIBUTION
EQUIPMENT
LONGWALL MINING
MINE ROADWAYS
MINES
MINING
MINING EQUIPMENT
NATIONAL ORGANIZATIONS
ROOF BOLTS
STRATA CONTROL
STRATA MOVEMENT
STRESS ANALYSIS
STRESSES
SUPPORT PILLARS
TUNNELS
UNDERGROUND FACILITIES
UNDERGROUND MINING
US BUREAU OF MINES
US DOI
US ORGANIZATIONS