Inicio  /  Applied Sciences  /  Vol: 13 Par: 10 (2023)  /  Artículo
ARTÍCULO
TITULO

Calculation Method of Loose Pressure in Surrounding Rock Mass

Hongjie Gao    
Weibin Ma    
Wenhao Zou    
Jinlong Zhang    
Xinyu Li and Jiaqiang Han    

Resumen

With the implementation of the regional coordinated development strategy, traffic flow has grown explosively. The construction of a larger tunnel section becomes an effective way to solve the highway network?s insufficient transport capability problem. Currently, there is little research on the factors influencing and methods of calculating the loose pressure in the surrounding rock mass for highway tunnels with super-large cross-sections. Based on the Bifurcation Tunnel, which is one of the sign projects in the past five years, this paper discusses the influencing factors for the range of loose zone in deeply buried tunnels using a combination of a numerical analysis and an orthogonal test. The weight of influencing factors is calculated via an efficiency evaluation method. This paper establishes a limit analysis model of the loose pressure in the surrounding rock mass under a non-linear failure criterion based on the fitted boundary function and upper bound limit analysis method and deduces the correlations of the loose pressure. The distribution law of the loose pressure, obtained via the limit analysis method, is consistent with the pressure-monitoring results, verifying the correctness of the proposed calculation method. This study can provide a calculation basis for the design of a supporting structure and the selection of similar super-section tunnel projects.

 Artículos similares

       
 
Romain Amyot, Noriyuki Kodera and Holger Flechsig    
Simulation of atomic force microscopy (AFM) computationally emulates experimental scanning of a biomolecular structure to produce topographic images that can be correlated with measured images. Its application to the enormous amount of available high-res... ver más
Revista: Algorithms

 
Xunchang Li, Mingming Wang, Wei Yang, Rui Xu and Xuqing Pang    
An anti-slide pile is a common landslide control measure. Compared with the full-length pile whose top extends to the ground, the buried pile is more optimal in internal force distribution, saves material and has remarkable economic benefits. At present,... ver más
Revista: Applied Sciences

 
Xiaokai Li, Xiaolong Zhang, Faming Zhang, Jian Huang, Shixiong Tang and Zhiqing Liu    
The mountainous areas of Southwest China have the characteristics of valley deep-cutting, a large topographic gradient, complex geological structures, etc. With the development of infrastructure construction in the area, the construction of bridges acros... ver más
Revista: Water

 
Rui Wang and Guoliang Yu    
In this study, the bedform dimensions of an alluvial bed in a unidirectional flow were experimentally investigated. A series of flume experiments was conducted; 700 sets of flume and field data were used in developing formulae for predicting the bedform ... ver más
Revista: Water

 
Shun Wang, Jiayan Wang, Zhikang Xu, Ji Wang, Rui Li and Jinliang Dai    
The application of titanium alloy in shipbuilding can reduce ship weight and carbon emissions. To solve the problem of titanium alloy forming, the deformation prediction of titanium alloy line heating based on a backpropagation (BP) neural network and sp... ver más