CAJ | 학술논문

由于新建隧道与既有隧道之间的间距较小，新建隧道施工时，易导致既有隧道结构破坏、影响运营安全。为了分析新建隧道采用不同施工工法对既有隧道的影响，采用数值模拟的方法，针对CD法、CRD法和双侧壁导坑法分别构建三维数值计算模型，分析不同工法施工新建隧道时，既有隧道衬砌的受力变形规律。研究结果表明，采用不同的分部开挖工法施工新建隧道对既有隧道的影响差异较大，从控制拱顶位移和塑性区范围角度考虑，建议采用双侧壁导坑法开挖新建隧道。既有隧道施工对中夹岩的影响显著，施工过程中要注意对中夹岩采取适当的工程措施进行加固处理。研究成果可以为近接隧道的施工与设计提供参考依据。
유우신건수도여기유수도지간적간거교소，신건수도시공시，역도치기유수도결구파배、영향운영안전。위료분석신건수도채용불동시공공법대기유수도적영향，채용수치모의적방법，침대CD법、CRD법화쌍측벽도갱법분별구건삼유수치계산모형，분석불동공법시공신건수도시，기유수도츤체적수력변형규률。연구결과표명，채용불동적분부개알공법시공신건수도대기유수도적영향차이교대，종공제공정위이화소성구범위각도고필，건의채용쌍측벽도갱법개알신건수도。기유수도시공대중협암적영향현저，시공과정중요주의대중협암채취괄당적공정조시진행가고처리。연구성과가이위근접수도적시공여설계제공삼고의거。
As the distance between the new tunnel and the existing tunnel is small, the structure of existing tunnel is easily damaged and the operation safety is influenced because of the construction of new tunnel. In order to analyze the effect to existing tunnel when the new tunnel is constructed by different method, 3D numerical simulation models are established for CD, CRD and both side heading method. Deformation law of structure of existing tunnel is analyzed when the new tunnel is constructed by different methods. The results show that the impact of different partial excavation methods of constructing a new tunnel to the existing tunnel is greatly different. From the consideration of controlling vault settlement and plastic zone, it is advised that both side heading method should be used to excavate the new tunnel. The construction of existing tunnel has obviously influence to interlaid rock, so proper engineering measures should be taken to reinforce the interlaid rock. The research results can provide a reference for the proximity of the tunnel construction and design.