Scheduling and Cost Estimation of Underground Work in Hydroelectric Project

Abstract

The construction of tunnel is important for different purposes. They can be constructed for railways, roadways, pedestrian footways and can be built in hard rock, soft ground, river bed and are also used to convey Hydro electric power, water stream, or as a sewer. The construction of Diversion Tunnel, Pressure Shaft, and Tailrace Tunnel to convey water is considered in this project. To identify different activities and their cycle time is calculated. Scheduling for different activity is carried out with the help of Primavera Software which is shown at result page. Cost Estimation in Diversion Tunnel, Pressure Shaft, and Tailrace Tunnel is also calculated. Excavation in heading and benching, Rock bolt support work, lining work is considered for cycle time and cost estimation calculation in DT, PS, and TRT. Excavation is carried out by two methods drill and blast method, and by Roadheader. Cost estimation is also carried out by two methods. The comparison of two methods adopted for excavation work and cost estimation has been carried out