An assessment of the dust suppression performance of a hybrid ventilation system during the tunnel excavation process: numerical simulation

2021 ◽  
Author(s):  
Xiaojiao Cai ◽  
Wen Nie ◽  
Shuai Yin ◽  
Qiang Liu ◽  
Yun Hua ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Ventilation System ◽  
Dust Suppression ◽  
Tunnel Excavation ◽  
Excavation Process ◽  
Hybrid Ventilation

Numerical Simulation for Large Section Tunnel Based on Stress Mapping Return Arithmetic and Loading Releasing Method

2011 ◽  
Vol 71-78 ◽  
pp. 3577-3580
Author(s):  
Zhan Ping Song ◽  
An Nan Jiang
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Simulation Methods ◽  
Tunnel Engineering ◽  
Large Section ◽  
Tunnel Excavation ◽  
Engineering Construction ◽  
Excavation Process ◽  
Stress Mapping ◽  
Relative Theory

Aiming at that general Finite Element Method is difficult to simulate the complex tunnel excavation inducing the second stresses adjusting, the paper proposed the simulation methods combining loading releasing and stress mapping return arithmetic. After the introduction of relative theory, the FEM code has been developed by VC++ . The excavation process of a large section tunnel engineering CRD construction is simulated by the code, the displacements contour, arc top and arc shoulder settlement, horizontal convergence and ground face settlement corresponding to each excavate step have been obtained by the simulation. The regulation of the results are compared with monitoring data, which stated the method is feasible. The simulation has guiding meaning to the tunnel engineering construction.

Numerical Simulation Analysis of the Construction Mechanics in the Process of Tunnel Excavation

2011 ◽  
Vol 71-78 ◽  
pp. 1590-1595 ◽  
Author(s):  
Dong Bo Li ◽  
Dong Zhao ◽  
Chun Yan Liu
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Simulation Analysis ◽  
Tunnel Excavation ◽  
Finite Element Software ◽  
Soil Displacement ◽  
Excavation Process ◽  
Soil Stress ◽  
Construction Mechanics

Based on the Wanshan tunnel project located between Hefei and Fuzhou, the paper numerically simulates the excavation process of six-step CD method using the technology of element birth and death of finite element software ANSYS. And the soil stress, soil displacement and deformation are analyzed, which can provided a reference for similar engineering.

NUMERICAL SIMULATION OF VENTILATION SYSTEM WITHIN AN ARMORED VEHICLE CABIN

2007 ◽  
Vol 14 (2) ◽  
pp. 201-223
Author(s):  
Chin-Lung Chang ◽  
Chang-Hsien Tai ◽  
Chien-Hsiung Tsai ◽  
Yu-Ren Wang ◽  
Qing-Shan Hon
Keyword(s):  
Numerical Simulation ◽  
Ventilation System ◽  
Vehicle Cabin ◽  
Armored Vehicle

Application of ABAQUS in Surrounding Rock Stability Analysis of Shallow Large Cross-Section Tunnel

2015 ◽  
Vol 777 ◽  
pp. 8-12 ◽  
Author(s):  
Lin Zhen Cai ◽  
Cheng Liang Zhang
Keyword(s):  
Numerical Simulation ◽  
Rock Mass ◽  
Strong Support ◽  
Surrounding Rock ◽  
Tunnel Engineering ◽  
Tunnel Excavation ◽  
Rock Stability ◽  
Rock Bolting ◽  
Excavation Support ◽  
The Stability

HuJiaDi tunnel construction of Dai Gong highway is troublesome, the surrounding-rock mass give priority to full to strong weathering basalt, surrounding rock integrity is poor, weak self-stability of surrounding rock, and tunnel is prone to collapse. In order to reduce disturbance, taking advantage of the ability of rock mass, excavation adopt the method of "more steps, short footage and strong support". The excavation method using three steps excavation, The excavation footage is about 1.2 ~ 1.5 m; The surrounding rock bolting system still produce a large deformation after completion of the first support construction, it shows that the adopted support intensity cannot guarantee the stability of the tunnel engineering. Using ABAQUS to simulate tunnel excavation support, optimizing the support parameters of the tunnel, conducting comparative analysis with Monitoring and Measuring and numerical simulation results, it shows that the displacement - time curves have a certain consistency in numerical simulation of ABAQUS and Monitoring and Measuring.

Numerical simulation of ventilation and dust suppression system for open-type TBM tunneling work area

2016 ◽  
Vol 56 ◽  
pp. 70-78 ◽  
Author(s):  
Yimin Xia ◽  
Duan Yang ◽  
Chenghuan Hu ◽  
Caizhang Wu ◽  
Jialin Han
Keyword(s):  
Numerical Simulation ◽  
Dust Suppression ◽  
Open Type ◽  
Work Area ◽  
Suppression System

A Wall Base Ventilation System Applied at Different Wall Geometries—Numerical Simulation of the Evaporative Process

2012 ◽  
Vol 30 (1) ◽  
pp. 1-12 ◽  
Author(s):  
J. M. P. Q. Delgado ◽  
A. S. Guimarães ◽  
V. P. de Freitas
Keyword(s):  
Numerical Simulation ◽  
Ventilation System

Study on the Integrated Design of Underground Construction Lighting and Ventilation System

2011 ◽  
Vol 374-377 ◽  
pp. 702-705
Author(s):  
Wei Feng ◽  
Hui Min Li
Keyword(s):  
Numerical Simulation ◽  
Thermal Environment ◽  
Ventilation System ◽  
Integrated Design ◽  
Structure Design ◽  
Light Environment ◽  
System Model ◽  
Underground Construction ◽  
New Type

In the underground building, Light environment and thermal environment is poorer, in order to improve the problem, this paper brings forward a new type of lighting and ventilation system model; discusses the principle and characteristics of transmission; and analyses the question that influences lighting and ventilated effect in the application. Structure design and numerical simulation is the focus of the next step.

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