Paper Title:
The Catastrophe Model Research of Rock Instability of Tunnel Blot-Grouting Support Structure
  Abstract

The tunnel excavation destroys rock stress state and when concentrated stress exceeds the strength of surrounding rock, the tunnel periphery rocks will be destroyed. And the effective bearing ring will be soon instable and it needs to be supported. Blot-grouting support is an active support method which organically combines shotcreting support and grouting consolidation and its theoretical research achievements are less. This paper, starting from catastrophe theory, established catastrophe instability model of blot-grouting support body and it also obtained the mechanic judgment criterion of blot-grouting support body damage and the regular pattern of the point (N, q)’s motion tract in the controlling space, of which the influence to the rock stability. And the paper also judged the minimum thickness of blot-grouting support body in the point of catastrophe stability model to provide the basis for theoretical calculation and engineering application.

  Info
Periodical
Edited by
Xuejun Zhou
Pages
2080-2085
DOI
10.4028/www.scientific.net/AMM.90-93.2080
Citation
F. S. Liu, S. K. Zhang, S. H. Wang, S. J. Wang, Y. Song, "The Catastrophe Model Research of Rock Instability of Tunnel Blot-Grouting Support Structure", Applied Mechanics and Materials, Vols. 90-93, pp. 2080-2085, 2011
Online since
September 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: Lin Jie Chen, Bo Liang
Abstract:Based on soil-structure interaction model, the response analyses of the Menglian tunnel by using viscous-spring artificial boundary and time...
2178
Authors: Xin Zhi Li, Shu Cai Li, Shu Chen Li, Xian Da Feng, Chao Yuan, Wen Ting Li
Chapter 10: Chemistry Science and Applied Chemistry
Abstract:The Qi-Great Wall tunnel which crossed the Qi -Great Wall ruins was a large span double-arch tunnel with two-way and six-lane and the maximum...
2245
Authors: Hong Jian Lu
Chapter 2: Manufacturing Technology
Abstract:In order to study the force mechanism and reinforcement effect of high-pressure second grouting method in leading support of soft-fracture...
768