摘要：研究目的:线路选线中经常遇到无法避绕的滑坡，当隧道走向与滑坡主滑方向一致时，称为隧道-滑坡 平行体系，对隧道的施工、运营都可能造成严重威胁。目前对穿越滑坡的隧道还没有形成统一的认识计算理 论。本文以隧道-滑坡平行体系为研究对象，通过模型试验，设置3个不同埋深的隧道模型，模拟隧道开挖过 程，并在后部加载促使坡体蠕动，在隧道周围布置应变片对隧道的应变进行监测，在坡体表面特征位置布置百 分表监控位移。 研究结论：( 1)应变测试表明：平行体系中，隧道埋深越大，隧道开挖后应力的释放对隧道顶部坡面的影 响越小，随着埋深的增加，隧道的应变逐渐增大;（2)位移测试表明：基岩与滑坡交界处的水平位移最大，坡顶 竖向位移最大的点位于隧道进口和基岩的中间部位；（3)对比发现:隧道-滑坡体系在滑体中伸人长度较小 时，隧道受力模式更接近两端铰接的杆状受力结构;当伸人长度较大时，隧道的受力模式更接近于悬挑结构， 隧道容易在基岩与滑体交界面位置产生应力集中；（4)本研究结论可为高速铁路穿越滑坡地区的设计和施工 提供一定借鉴。

Abstract ： Research purposes ： The landslide in railway route selection is often unavoidable， when the tunnel to be consistent with the direction of the landslide main slide，it was called tunnel - landslide parallel system，which is the serious threat to the construction and operation of tunnel. At present，tunnel design and construction crossing landslide has not yet formed a unified understanding and standard，there is no complete theory of computation. This paper takes the tunnel - landslide parallel system for the study，sets up three tunnel models with different depths by model tests to simulate tunnel excavation process，and promotes the slope creeping by loading in the rear，arranges the strain gages around the tunnel to monitor and analyze the tunnel strain，arranges dial indicator to monitor the displacement in slope su;face. Research conclusions ：( 1) Strain tests show that ： in the parallel system，the larger the tunnel depth is，the smaller the impact of tlie release of tlie stress on the top of tlie slope of tlie tunnel after tunnel excavation is; Witli increasing depth, the strain of the tunnel increases. (2) 6ie tests of disj)lacement siow tiat： te level displacement at te junction of bedrock and landslides is te largest. Tiie maximumvertical displacement of te point of a Hll is in te middle portion of die tunnel entrance and bedrock. ( 3 ) Tie comparison siiows tat: wiien te tunnel - landslide system extends into te smaller body lengtii, te tunnel force mode is closer to te rod - siiaped stress structure of botii ends of te iiinge; wiien inserted into te larger lengt，te force mode of tunnel is more close to te cantilevered structure. Stress concentration is prone to produce in tie interface location of bedrock and sli(ier. ( 4) Tie rsearcii can provide a reference for te design and construction of iigi - speed railway tunnel across tie areas of landslide.