Optimization Coal Pillar Size of Top Coal Caving Face with Dynamic Pressure Impact

Wen Zhou Li

doi:10.4028/www.scientific.net/AMM.675-677.1395

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 675-677Optimization Coal Pillar Size of Top Coal Caving...

Optimization Coal Pillar Size of Top Coal Caving Face with Dynamic Pressure Impact

Abstract:

AH Wilson coal pillar was used widely as it’s simply, but it’s appeared large error for field implementation as its difference assume conditions, mine depth H and mine thickness m. AH Wilson coal pillar formula was studied precisely by in-site stresses test and numerical simulation analysis for N3-5 top coal caving working face of CHANGCUN coal mine in Lu’an coal district of China, then modified AH Wilson formula was put forward as L = 0.008mH + 8.4,then the precise coal pillar size 18m was used in filed implementation, filed testing proved coal pillar size was reasonable.

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Periodical:

Applied Mechanics and Materials (Volumes 675-677)

Pages:

1395-1400

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.675-677.1395

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Online since:

October 2014

Authors:

Wen Zhou Li*

Keywords:

Dynamic Pressure Impact, Modified AH Wilson Coal Pillar, Numerical Simulation, Optimization Coal Pillar Size, Top Coal Caving Face

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