Abstract：Research purposes : During design on railway tunnels for passenger dedicated railway line , the calculation puzzle of water ballasting affect should be considered. So the lining structure design considering water press-resistant remain one hotspot of design and research on for tunnels. For checking security and water resistance of tunnel lining structure design, it is necessary to verify structure force of tunnel lining design considering water press-resistant.
Research methods : According to the specific geological conditions and the project design requirements of Jinshazhou Tunnel , the loading-structure model based on the finite element method is adopted to simulate structural stress of the lining structure for the design on three types of wall rock lining.
Research results : Through the numerical simulation，the external water pressure of lining and the stress distribution are got; the safety factor of the lining structure is checked. By analyzing the results of tests, the proper lining structure o, corresponding wall rock is selected.
Research conclusions : In the design of lining structure with full face latch-up hailing, the resist compression performance of before must be strongly considered. When the underground head is high in the region with vast groundwater, the external water pressure of lining can be lowed effectively by using drapery injecting plasm which can improve permeability. The feasibility that optimizing lining stress feature by control variance such as radius of invert external corner, radius of joint between invert and curve side wall, thickness of invert is examined and certificated through numerical simulation.
2007, Vol. 24 
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