Optimum cutting plan in tunnel excavation with waterjet slotter

2020 ◽  
pp. 277-284
Author(s):  
A. Bortolussi ◽  
R. Ciccu ◽  
B. Grosso ◽  
P.P. Manca
Keyword(s):  
Tunnel Excavation ◽  
Optimum Cutting ◽  
Cutting Plan

Tunnel excavation in granular media: the role of force chains

2021 ◽  
Vol 23 (4) ◽  
Author(s):  
Raj Kumar Pal ◽  
Robert Buraque de Macedo ◽  
José E Andrade
Keyword(s):  
Granular Media ◽  
Force Chains ◽  
Tunnel Excavation

Effects of In-situ Stress on Blasting Damage during Deep Tunnel Excavation

2021 ◽  
Author(s):  
Sheng Luo ◽  
Peng Yan ◽  
Wen-Bo Lu ◽  
Ming Chen ◽  
Gao-Hui Wang ◽  
...  
Keyword(s):  
In Situ Stress ◽  
Deep Tunnel ◽  
Tunnel Excavation

Study on the Prediction Method of Tunnel Surrounding Rock Pressure Based on the Theory of Progressive Destruction

2012 ◽  
Vol 446-449 ◽  
pp. 1432-1436
Author(s):  
Suo Wang
Keyword(s):  
Rock Pressure ◽  
Characteristic Curve ◽  
Prediction Method ◽  
Surrounding Rock ◽  
Progressive Damage ◽  
Tunnel Excavation ◽  
Practical Engineering ◽  
Surrounding Rock Pressure ◽  
The Relationship ◽  
Rock Parameters

In order to predict tunnel surrounding rock pressure, this paper puts forward a series of dynamic numerical simulative model on the tunnel excavation. According to the change of rock damage in the construction program, it adjusts dynamically the mechanical material parameters of surrounding rock. So the model achieves the purpose which is controlling and simulating the process of tunnel progressive damage. In accordance with the numerical simulative results, it analyzes the relationship between the rock parameters with the plastic strain, radial displacement. Then this paper proposes a prediction method of tunnel surrounding rock pressure based on the theory of the progressive damage and method of characteristic curve. Finally, it compares the pressure on the numerical simulative models with on the site date, and it proves that the prediction method has practical engineering value.

Analysis of Plastic-Zone Radius Influenced by Mechanical Parameters in Tunnel Excavation and Support

2012 ◽  
Vol 238 ◽  
pp. 787-790
Author(s):  
Zhong Ming Su ◽  
Rui Liu
Keyword(s):  
Plastic Zone ◽  
Axial Force ◽  
Analytical Formula ◽  
Mechanical Parameters ◽  
Circular Tunnel ◽  
Tunnel Excavation ◽  
Dynamic Design ◽  
Elastic Plastic ◽  
Zone Radius ◽  
Plastic Theory

According to the elastic-plastic theory, the analytical formula of plastic zone radius is established for circular tunnel in its excavation and support, and the effect of anchor support is verified based on the radius of plastic zone from the perspective of measured axial force. The influences to plastic zone by the variations of mechanical parameters and resistance of support are quantitatively analyzed. The result is of great significance to the monitoring measurement and the dynamic design and construction of tunnel.

Optimization on cut-hole of mining tunnel excavation

2009 ◽  
Vol 19 (1) ◽  
pp. 70-73 ◽  
Author(s):  
Chuan-bo ZHOU ◽  
peng WANG ◽  
Yong-jian LEI ◽  
Xiao-peng YIN
Keyword(s):  
Tunnel Excavation
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