Table of Contents
1 ) INTRODUCTION
Tinekhu Khola Small Hydropower Project (TKSHP) with an Installed Capacity of 990 kilowatt utilizes circulation from Tinekhu Khola which can be located for Suri and Jhyaku VDC's of Dolakha District, Janakpur zone in Eastern Advancement Region of Nepal. Tinekhu Khola Little Hydropower Project (The Project) is Elope River (RoR) type having its headworks found in Tinekhu Water at some a few km upstream from the confluence of Tamakoshi River and Tinekhu Water. The distance to the intake web page from Singati Bazaar is around 6 kilometres north-east. The powerhouse is found along the kept bank of Tamakoshi Water, some 100 m upstream from the confluence of Tamakoshi River with Tinekhu Water. There is a connect over Tamakoshi River close to powerhouse and a seasons road up to the forebay location. The entire job area (headworks to powerhouse) is located in Suri and Jhakhu VDC's of Dolakha District along the proper bank of Tinekhu Lake. Geographically, the project area is located involving the longitudes 86º10'45”E to 86º12'06”E and latitude 27º44'07”N to 27º45'15”N. Physio-graphically, the job area is one of the Middle Huge batch Zone and elevation amounts from 980 meter above mean marine level (amsl) to 1400 m amsl along the top catchment border. According to the hydrological study, the structure discharge of 0. 35 m3/s is around 57% exceedence river movement. Thus which has a gross brain of 412 m and net mind of 392. 01 meters and 0. 35 m3/s design circulation at 74. 5% efficiency the installed capacity will probably be 990 KW. The net total annual energy technology at delivery point (i. e., substation at Singati) is expected to be about 6. 62 GWh. The dry time energy is usually 1 . 71 GWh and wet season energy can be 4. 890 GWh. The overall project development cost is 193 Million NPR including Interest During Construction (IDC) plus the construction period is approximated to be twenty-three months. Electricity Purchase Contract (PPA) have been made about 8th Aswin 2069. The land buy on the task site had been completed. installment payments on your General arrangement and explanation
2 . 1 General arrangement of the Job
The general agreement of the job includes headworks, water conveyance arrangement and powerhouse that you write in the cue section bank with the Tamakoshi Lake. The major headworks structures are the over-flow curve weir, a side intake, gravel capture and settling basin. A gravel eliminating arrangement can be provisioned to flush-out the bed-load that might enter throughout the intake echappee during the high flow seasons. From your gravel snare, water can be diverted in a settling container where the suspended sediments happen to be settled and flushed away. A 2058. 73 meters long headrace pipe (HDPE) with an internal diameter of 400mm conveys the flow from the moving basin to the forebay. Then a 759. 54 m long and 400 mm diameter steel penstock pipe conveys the design relieve to producing units within the powerhouse. The tailwater will be discharged to Tamakoshi Lake through a fifty four. 35 meters tailrace culvert. The produced power will be evacuated through 11 kaviar, 3 km long transmission line to the substation in Singati.
Number: General Task Layout
installment payments on your 2 Headworks
The headworks of the TKSHP comprise of installment payments on your 6 m high and 17. 40 m extended free circulation permanent weir. A part intake is provided next to the curve weir along the right financial institution. The absorption is fitted with two echappee opening sufficient to abstract design launch of three hundred and fifty lps combined with flushing release required for small trap and settling pot. The intake canal delivers the redirected flow in to the gravel pitfall where the bed load that entered throughout the intake orifice opening will be settled and flushed back to the Water downstream through gravel flushing. The way canal of size zero. 8 meters wide and 0. 8 m large conveys the flow by gravel capture to the negotiating basin. Two chambered moving basin can be proposed to be in the molecule size approximately 0. two mm. The flow in the settling container will then be conveyed to the forebay through 2046. 0m headrace pipe. The detail...