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Research on Support Technology for Dan Shan Gou 2# Double Arch Tunnel

Author: SuChenHong
Tutor: XieYongLi
School: Chang'an University
Course: Bridge and Tunnel Engineering
Keywords: Arch tunnel Support design Parameter Optimization Hole construction Slope protection
CLC: U455.7
Type: Master's thesis
Year: 2009
Downloads: 103
Quote: 1
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Abstract


With China's rapid economic development and large-scale construction of the highway system , double-arch tunnel structure as a relatively new and unique form of a tunnel , with the terrain conditions small , linear and smooth, lead small footprint, large span, space utilization high structural integrity and good features that are widely used in recent years . However, domestic arch tunnel applications and research is still in the accumulation phase of exploration and practice , the paper combined with Dan ravine 2 # arch tunnel construction , from the lining support design calculations, support system monitoring and measuring upward Slope governance and openings has carried out research work . In -depth study of the tunnel site engineering geological conditions , based on the study of the stability of surrounding rock classification and support measures for the relationship between the given optimized support scheme ; right Ⅳ, Ⅴ grade rock conditions supporting systems analysis and security forces carried out calculation, verification by numerical parameters set a reasonable support system , supporting the design and optimization of work processes is correct. Simulations revealed a double -arch tunnel construction method of the force and have a greater relationship in order to avoid the slump caused by excavation diameter increases arch height increases , the wall should be applied to do and asked the guide hole is not open One side dug temporary steel plate and tube support in the wall, balancing the asymmetric thrust. Dan # 2 on ravine arch tunnel support systems and convergence deformation force to conduct a comprehensive monitoring studies and found that the construction of entrance arch tunnel segments are often subjected to bias , force change and tunneling processes and supporting procedures are closely related to the proposed project the increase monitoring efforts , the implementation of dynamic design and information construction technology . # 2 of Dan ravine rock tunnel entrance arch upward Slope geological conditions and stable mechanism for excavation cave entrance with the work and give detailed supporting work proposals , and provide a governance program cave entrance , to solve the collapse branch protection issues , engineering applications show a reasonable solution .

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CLC: > Transportation > Road transport > Tunnel project > Tunnel construction > Tunneling,guided Lane and support
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