Paper Title:
The Research on Abutment Stress Distribution and Fracture Characteristics of Coal Seam in Longwall Face
  Abstract

The abutment stress results from the load coming from overlying strata above the influence range of abutment stress and the load which coming from overlying strata above the stress shell passed by the shell. Through the mechanical calculation,this paper analyzed abutment stress distribution and fracture characteristics of coal seam resulted from the load of overlying strata passed by stress shell which exists in surrounding rock of working face, and obtained the laws of abutment stress distribution and fracture in coal seam in combination with numerical simulation and site testing. The characteristics of abutment stress distribution and fracture are related to the geometrical shape of the stress shell, such as height of the stress shell, horizontal distance between top of stress shell and coal wall,and width of stress shell skewback.

  Info
Periodical
Advanced Materials Research (Volumes 361-363)
Chapter
Chapter 2: Mining Engineering
Edited by
Qunjie Xu, Honghua Ge and Junxi Zhang
Pages
103-107
DOI
10.4028/www.scientific.net/AMR.361-363.103
Citation
C. M. Li, "The Research on Abutment Stress Distribution and Fracture Characteristics of Coal Seam in Longwall Face", Advanced Materials Research, Vols. 361-363, pp. 103-107, 2012
Online since
October 2011
Authors
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Price
$32.00
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