根据某输水隧洞所处白垩系地层的物理和力学特征，拟定白垩系河口群（ K1 hk1）地层输水隧洞衬砌结构，利用Midas GTS NX对地层结构模型和衬砌结构进行了有限元分析，确定衬砌结构安全系数满足相关规范要求。%According to physical and mechanical properties of the water-transportation tunnel with cretaceous strata,this paper designed the water delivery tunnel lining structure of the group of cretaceous estuary( K1 hk1 ),used Midas GTS NX to analyze the structure model of soil layer and the lining structure,and made sure the lining structure meet standard requirements.
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