A NOVEL ARRANGEMENT FOR INSTALLING HYDROPOWER STATION ON KOLHAPUR TYPE WEIR.

摘要

A Kolhapur Type K. T. Weir for storage of water consists of a number of piers like a bridge. There are vertical slots in the piers for installing gates which are removed during monsoon floods. The height of the piers is such that the impounded water level remains within the river course. The K. T. Weirs built usually by stone masonry are not designed to take the stresses of foot-of-the dam turbine for generating electricity. Building a side canal is expensive compared to the power generated. A standard siphon type intake for turbine over the weir is not possible because the weir is also used as a bridge. To overcome these problems about 5 to 10% of the gates near the bank of river are removed, a wall like civil structure is constructed from one of the end piers to the downstream bank. This effectively "bends" the straight weir near the river bank creating a downstream extension of the upstream reservoir. A siphon intake hydroelectric turbine can then be fitted on this new civil structure thus isolating the stresses from the main K. T. Weir. The siphon intake on the new civil structure does not disturb the traffic on the bridge as well as keeps the turbine above water level.