CAJ | 학술논문

土体在长期自重应力作用下达到平衡，隧道在开挖过程中，开挖面土体应力释放，必将打破原有土体应力平衡。在新的应力场平衡过程中，土体颗粒位置发生改变，隧道围岩产生变形，当变形过大的时候，易于诱发工程事故，特别是在偏弱围岩近距双线隧道浅埋暗挖施工过程中，通过对其围岩变形的研究来合理分析隧道围岩的整体稳定性显得尤为重要。基于此，结合我国中部某市地铁2号线隧道施工工程实例，研究了双线隧道左右线隧道开挖过程中围岩的变形规律，得出近距隧道围岩变形的影响区域及最大变形值，其研究的方法及结论能够为类似工程设计及施工提供一定程度上的参考依据。
토체재장기자중응력작용하체도평형，수도재개알과정중，개알면토체응력석방，필장타파원유토체응력평형。재신적응력장평형과정중，토체과립위치발생개변，수도위암산생변형，당변형과대적시후，역우유발공정사고，특별시재편약위암근거쌍선수도천매암알시공과정중，통과대기위암변형적연구래합리분석수도위암적정체은정성현득우위중요。기우차，결합아국중부모시지철2호선수도시공공정실례，연구료쌍선수도좌우선수도개알과정중위암적변형규률，득출근거수도위암변형적영향구역급최대변형치，기연구적방법급결론능구위유사공정설계급시공제공일정정도상적삼고의거。
The soil reachs equilibrium under the long-time action of gravity stress,tunnel excavation. When soil excavating,the face stress is released,which will break the balance of the original soil stress. In the new equilibrium process of stress field,soil particles position changes,and the tunnel rock deforms. When the deformation is too large,it is easy to induce engineering accidents. Especially in weak rock close-lane tunnel shallow construction process,the rock deformation rational analysis on the overall stability of surrounding rock is particularly important. Based on this,combined with a city in the middle of Metro Line 2 of the tunnel construction project example,we studied the deformation process of two-lane tunnel excavation in rock around the tunnel line law. The close tunnel rock deformation affected area and maximum deformation values were obtained. Methods and conclusions of the study could provide a reference to a certain extent for the design and construction of similar projects.