Timalsina A, Nischal Dhakal, Ujjan Paudel. A Case Study of Cavity Formation and its Rectification Works in Small Sized Tunnels with Excessive Water Inflow. ASRJETS-Journal [Internet]. 2022 May 15 [cited 2025 Sep. 20];88(1):15-2. Available from: https://asrjetsjournal.org/American_Scientific_Journal/article/view/7458