Tartaiguille隧道全长2330m，断面面积180m2，穿越软弱破碎地层。隧道原采用台阶法开挖，喷、锚、钢架支护，现浇混凝土衬砌。施工中，隧道发生严重变形，不得不停止施工，寻求新的隧道设计施工方法。经过论证，该隧道最终采用新意法进行设计和施工，并取得巨大成功。文章按勘察、诊断、处治、施工、监测5个阶段，详细介绍了新意法在Tartaiguille隧道建设中的应用。

With 2330m length and 180m2 crosssection area, Tartaiguille tunnel runs through fractured soft ground. The tunnel is originally excavated by top heading/bench method and is reinforced with shotcreting, rock bolting, steel ribs and castinsitu concrete lining. During the construction of the tunnel, serious deformation occurs so that the construction of the tunnel has to be suspended. New design and construction solutions must be adopted for the tunnel. After full examination, ADECORS approach is finally adopted for the design and construction of the tunnel and great success has been achieved. Case study is made on the application of ADECORS approach in the design and construction of the tunnel in respects of survey stage, diagnosis stage, therapy stage, operation stage and operation stage.