Paper Title:
Laws of Formation and Evolution of Pressure Arch in Coal Mining Adjoining Rock
  Abstract

Based on numerical simulation of computing Software ANSYS, the curve of arching coefficient variation of pressure arch due to actual mining was analyzed aiming to a special mining face, the law of stress transfer and change in surrounding rock was discussed, and the evolving features and characteristics of pressure arch was obtained. The analysis and discussion show the following facts: Arch body will become thicker and stress in the arch body increases with working face’s driving distance increasing; the morphology of pressure arch transits from ellipsoid with long axis in the vertical direction to ellipsoid with long axis in the horizontal direction along the trend of working face; along the tendency of working face, the morphology of pressure arch is a ellipsoid with long axis in the vertical direction.

  Info
Periodical
Advanced Materials Research (Volumes 243-249)
Edited by
Chaohe Chen, Yong Huang and Guangfan Li
Pages
2596-2600
DOI
10.4028/www.scientific.net/AMR.243-249.2596
Citation
X. L. Du, H. W. Song, J. Chen, "Laws of Formation and Evolution of Pressure Arch in Coal Mining Adjoining Rock", Advanced Materials Research, Vols. 243-249, pp. 2596-2600, 2011
Online since
May 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Chuan Xiao Liu, Long Wang, Zhi Hao Liu, Xiu Li Zhang
Abstract:A yielding inverted arch of composite structures is designed to control serious floor heave of tunnel. Constitution of the inverted arch is...
791
Authors: Xiang Zhu, Yong Sheng Tang, Fei Xiang Li, Yao Zhao
Chapter 1: Structural Engineering
Abstract:The jack-up wind turbine installation vessel is a special kind of vessel for building the offshore wind power farm. The main crane pedestal,...
7