Studies of the Deformation Behavior of Tunnel Near Slope
碩士 === 國立臺灣科技大學 === 營建工程系 === 88 === The stresses and deformation of shallow tunnel near slope is non-symmetric, and the mechanical behavior needs further studies. The three-dimensional numerical code FLAC3D is used to analyze the stresses and deformation during tunneling. The deformation investigat...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2000
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| Online Access: | http://ndltd.ncl.edu.tw/handle/05162793960839612051 |
| Summary: | 碩士 === 國立臺灣科技大學 === 營建工程系 === 88 === The stresses and deformation of shallow tunnel near slope is non-symmetric, and the mechanical behavior needs further studies. The three-dimensional numerical code FLAC3D is used to analyze the stresses and deformation during tunneling. The deformation investigation includes roof settlement and inner convergence, and the stress discussion is connected to plastic zone development surrounding around the tunnel. The first part work focuses on single tunnel under three different locations near slope. The second part work focuses on two parallel tunnels under five different spacing and two different elevation.
The analytic results show that the slope has significant influence on tunneling behavior both single tunnel and parallel tunnels. The maximum deformation is not happened at roof during tunneling, and the traditional inner convergence monitoring can not reflect the critical condition of tunnel near slope. The stresses and deformation of parallel tunnels are different from single tunnel. The spacing between parallel tunnels plays an important role while the spacing is less than double tunnel width.
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