A Numerical Study of Stress Distribution and Fracture Development above a Protective Coal Seam in Longwall Mining

A Numerical Study of Stress Distribution and Fracture Development above a Protective Coal Seam in Longwall Mining

Coal and gas outbursts are serious safety concerns in the Chinese coal industry. Mining of the upper or lower protective coal seams has been widely used to minimize this problem. This paper presents new findings from longwall mining-induced fractures, stress distribution changes in roof strata, stra...

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Bibliographic Details
Main Authors: Chunlei Zhang, Lei Yu, Ruimin Feng, Yong Zhang, Guojun Zhang
Format: Article
Language:English
Published: MDPI AG 2018-09-01
Series:Processes
Subjects:
longwall mining
gob behaviors
stress relief
permeability
gas drainage
Online Access:http://www.mdpi.com/2227-9717/6/9/146

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