The report’s main focus is on the study of Lower Mardi River Hydropower project for its feasibility analysis; the works included in this report are hydrological study, survey, development of contour maps of the site. The Mardi River is... more
The report’s main focus is on the study of Lower Mardi River Hydropower project for its
feasibility analysis; the works included in this report are hydrological study, survey, development
of contour maps of the site. The Mardi River is located in the Kaski district with catchment of
97.2 km2 at the point where preliminary location of head works is fixed. Lower Mardi River
hydropower project has installed capacity of 2.61MW.
Additionally, the flood analysis of river has been carried out with different methods so as to
make the proposed weir capable of passing the flood discharge without any structural damage to
the components of the hydropower. The flood discharge of approximately for a return period of
100 years has been calculated from Modified Dicken’s method. This report also includes the
result of the survey works carried out in the project site. The survey data has been represented as
the topographic map of the area of dam, power house and the probable alignment route of canal
and penstock. On the second part of the project, design of components like: weir, headrace canal,
sand trap, connecting channel, forebay, penstock, spillway, anchor blocks, turbine, powerhouse
and tailrace.
Weir was designed as Tyrolean weir with height of weir 5.5 m. The connecting canal of
100mlong supplies water to sand trap. Sand trap was of dimension179*5.7*6.9m .The sand trap
and forebay were connected with canal of width 4m and 800m long. Spillway was designed in
forebay and sand trap to discharge the excess of water. The forebay was 62.5 in length and 8.5m
in depth. Then finally penstock was 200m long with diameter of 2.10m.
The total cost of project was found to be NRs574.78 million, IRR 13.4 , B/C ratio 1.13 and
payback period 8.24 years.
feasibility analysis; the works included in this report are hydrological study, survey, development
of contour maps of the site. The Mardi River is located in the Kaski district with catchment of
97.2 km2 at the point where preliminary location of head works is fixed. Lower Mardi River
hydropower project has installed capacity of 2.61MW.
Additionally, the flood analysis of river has been carried out with different methods so as to
make the proposed weir capable of passing the flood discharge without any structural damage to
the components of the hydropower. The flood discharge of approximately for a return period of
100 years has been calculated from Modified Dicken’s method. This report also includes the
result of the survey works carried out in the project site. The survey data has been represented as
the topographic map of the area of dam, power house and the probable alignment route of canal
and penstock. On the second part of the project, design of components like: weir, headrace canal,
sand trap, connecting channel, forebay, penstock, spillway, anchor blocks, turbine, powerhouse
and tailrace.
Weir was designed as Tyrolean weir with height of weir 5.5 m. The connecting canal of
100mlong supplies water to sand trap. Sand trap was of dimension179*5.7*6.9m .The sand trap
and forebay were connected with canal of width 4m and 800m long. Spillway was designed in
forebay and sand trap to discharge the excess of water. The forebay was 62.5 in length and 8.5m
in depth. Then finally penstock was 200m long with diameter of 2.10m.
The total cost of project was found to be NRs574.78 million, IRR 13.4 , B/C ratio 1.13 and
payback period 8.24 years.
