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Abstract: After construction of two 1.67 Km long and 5.9 m Internal diameter twin bored tunnels, to connect Nizammudin to Ashram station in the phase-III expansion plan of Metro network, in New Delhi, five Cross Passages needs to be excavated to connect both tunnels as per NFPA guidelines. The ground consists of alluvium, associated with the Yamuna River, belonging to the Pleistocene, a very fine silty...