Effects of pillar geometry and arrangement on the stability of longwall panel entries

Conference · Tue Mar 01 00:00:00 EST 1983 · Prepr., Soc. Min. Eng. AIME; (United States)

OSTI ID:6417166

Su, W H; Peng, S S

Relative structural stability among longwall panel entries of different geometry is examined. Parametric variations are applied using two-dimensional finite element models to study the effect of various arrangements of unequal-sized chain pillars on the stability of the pillars and the entries. The average pillar stress and entry convergence are adopted as the basic stability criteria. Three models of different entry geometry and pillar size are analyzed for the three-entry system, and nine models are analyzed for the four-entry system. The tailgate phase of the entry life cycle is emphasized in the analyses.

• Research Organization: West Virginia University, Morgantown, West Virginia
• OSTI ID: 6417166
• Report Number(s): CONF-830317-
• Journal Information: Prepr., Soc. Min. Eng. AIME; (United States), Vol. 83-COAL-01; Conference: TMS/AIME meeting, Atlanta, GA, USA, 6 Mar 1983
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
LONGWALL MINING
STRATA CONTROL
SUPPORT PILLARS
GEOMETRY
POSITIONING
COAL MINES
FINITE ELEMENT METHOD
MATHEMATICAL MODELS
SIZE
STABILITY
STRESS ANALYSIS
STRESSES
TWO-DIMENSIONAL CALCULATIONS
MATHEMATICS
MINES
MINING
NUMERICAL SOLUTION
UNDERGROUND FACILITIES
UNDERGROUND MINING
012000* - Coal
Lignite
& Peat- Mining