Neelum jhelum hydroelectric project ( NJHEP)

NEELUM JHELUM
HYDROELECTRIC PROJECT
Department of civil engineering
Chenab College Of Engineering & Technology, Gujranwala
04-05-2017 1Chenab College of Engineering & Technology Gujranwala

RUBNAWAZ BHATTI
REG # 2015-UET-CCET-CIVIL-02
STUDENT: BSc Civil Engineering
Chenab college of Engineering & Technology Gujranwala
04-05-2017Chenab College of Engineering & Technology Gujranwala 2

INTRODUCTION:
• NJHEP is basically a power generation project in Azad Kashmir at Neelum Jhelum
River.
• It is designed to divert water from the Neelum River to a power station on
the Jhelum River through tunnels.

HISTORY OF THE PROJECT:
• After being approved in 1989, the design was improved, increasing the tunnel length
and generation capacity.
• The project was intended to begin in 2002 and be completed in 2008
• 2005…
• This time-frame experienced significant delays to rising costs and funding
• 7 July 2007..

LOCATION:
• The Neelum Jhelum Hydropower Plant is part of an under construction run of the
river hydroelectric power scheme designed to divert water from the Neelum River to
a power station on the Jhelum River. The power station is located in Azad Kashmir,
22 km south of Muzaffarabad and will have an installed capacity of 968 MW.

FEATURES OF THE PROJECT:
• Client:
Wapda Is Client Of NJHEP Project Which Cost About 404
Billion Rupees. First Time, It’s A Big Diverse Nature Project Is
Implemented In Pakistan To Meet Energy Crisis. Project Initialised In
2008 And Expected Completion Date Is June, 2017. Estimated Power
Generation Is 969MW.

CONSULTANT:
• NJC (Neelum Jhelum Consultant) Is Basically A Joint Venture Of Differential And
International Companies. NJC Is Joint Venture Of Five Firms, In Which Three
Belongs To Pakistan Like ACE, NESPAK And NDC One From Norway Which Is
NORPLAN And One From America Which Is MWH.

CONTRACTORS:
• In April 2006, The Wapda Had Cleared Three International Bidders For A Contract
To Develop The Project. The Chinese Consortium Of CMEC And CGGC Emerged As
The Lowest Bidder At $1.30 Billion. The Other Bidder, China International Water &
Electric Corporation (CWE), Quoted $1.80 Billion. CGGC And CMEG Are Contactors
Of NJHEP, Both Firms Belong To China. CGGC Is Executing Civil Work And
CMEG Is Working For Mechanical And Electrical Work.

DESIGN & WORK:
• The Neelum Jhelum Dam Will Be A 47 M Tall And 125 M Long Gravity Dam.
• It Will Withhold A Reservoir With An 8,000,000 M3 Capacity
• The Dam Diverts Up To 280 M3/S Of The Neelum Southeast Into A 28.5 Km Long
Headrace Tunnel.
• The First 15.1 Km Of The Head-race Is Two Tunnels Which Later Meet Into One.
• The Tunnel Passes 380 M Below The Jhelum River And Through Its Bend.
• The Four 242 Mw Francis Turbine-generators In The Underground Power House.

LAND ACQUISITION:
• Project Envisages Acquisition Of Approx, 2400 Canals Of Private And State Land In
The Project Area In Muzaffarabad District.
• So Far Wapda Has Transferred Rs.705 Million To Govt. Of AJ&K As Provisional
Cost Of The Notified Private And State Land.
• Wapda Has Taken Possession Of 80% Land; And Arrangements Are Being Made To
Acquire The Remaining Land

CONCRETE GRAVITY DAM:
Concrete gravity dam basically consist of different components like
• Concrete walls
• Piers
• Spillway
• Stilling basin
• Drainage gallery
• Debris channel.

CONCRETE GRAVITY DAM:
• It has upstream and downstream.
• Upstream level is more than downstream level.
• On downstream level stilling basin exist.
• In NJHEP Upstream level is 963m and downstream level is 961m.

CAPACITY & LEVEL OF DAM:
04-05-2017 13
Maximum Reservoir level 1015 m
Reservoir Capacity at Maximum Reservoir level 10.2 million cumecs
Minimum Reservoir level 1008 m
Reservoir Capacity at Maximum Reservoir level 6.4 million cumecs
Useable Water 3.8 million cumecs
PMF 1018 m
Top elevation of dam 1019 m
Chenab College of Engineering & Technology Gujranwala

ROCK FILL DAM:
• Rock fill dams are embankment of compacted free-draining granular earth with an
impervious zone. The earth utilized often contain a high percentage of large
particles, hence the term “Rock fill”. The impervious zone may be on the upstream
and made of masonry, concrete, plastic, membrane, steel sheet piles, timber and
many other materials. The impervious zone may be within the embankment in
which case it is referred to as a core.

SPILLWAYS:
• Basically, Spillways function is water controlling from upstream to downstream.
• Three radial gates are install on spillways. All work is carried out in different
sections, therefore different joint exist which are cold, contraction and expansion
joint but expansion joints are not at dam site because temperature is low at due to
cold weather.

SPILLWAYS:

TUNNELS:
• A six gate tunnel intake structure of 280 cumecs (m3/sec) capacity will be connected
three conventional flushing surface basins installed at their end for taking sediment
back into the river.
• The total length of headrace tunnel is almost 48 Km. A 9.54 stretch of the tunnel
from the Nauseri site will be constructed as twin tunnel system each with cross
sectional area varying from 52-58 meter per square.

GEOGRAPHIC AREAS OF NJHEP:
• Nauseri Area (C1)
• Majhohi Area (C2)
• Chatter Kalas Area (C3)

NAUSERI AREA (C1):
• A 60m high Composite diversion dam and sedimentation basin near Nauseri is on
the Neelum River.

MAJHOHI (C2):
• The headrace tunnel is 48 km long including twin tunnel and convey the water from
the intake area at Nauseri to the Powerhouse area near Chatter Kalas.

CHATTER KALAS AREA (C3):
• The headrace will feed four vertical-shafts Francis turbines with an installed
capacity of 969 MW housed in an underground powerhouse.

BENEFITS OF THE PROJECT:
• Reduction of dependent on thermal power.
• Saving in foreign exchange.
• Improved standard of living infrastructure.
• Reduction in Load shedding.
• Project will create an enhance tourism opportunities.
• Social & Economic development of local area and population.
• Reduction of floods in Jhelum River.

DEMERITS OF THE PROJECT:
• Beauty of this area is enhanced by this river; and this diversion will have serious
effect on wild life, weather and beauty of the area.
• This project, once completed will benefit Pakistan, but local people will not benefit
from it in any form or shape. There will be serious economic and environmental
consequences for the local people; and their future generations will face very serious
economic and environmental problems.

Neelum jhelum hydroelectric project ( NJHEP)

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