52 nd SMC course

1. 4/25/2018 1Neelum Jhelum Hydel Project

2.  Acknowledgement
 Self Introduction
 NJHP Brief
 Tunnel Excavation
 IMCS
 Objective
 Conclusion
SEQUENCE OF IMCS
4/25/2018 Neelum Jhelum Hydel Project 2

3. ACKNOWLEDGEMENT
 Dedicated to my Parents & Family
 Dedicated to my all teachers
 Faculty members
 IMCS Participants
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4. SELF INTRODUCTION
 BSc Engg. (Civil) UET Lahore 1986
 Post Graduation NORWAY 1991~92
 MSc Engg. UET Taxila 2009
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5. SELF INTRODUCTION
EXPERIENCE
joined WAPDA 1987
Hydro Planning Organization 1987~1993..06
Neelum Jhelum Hydropower Project
 Detail design & Investigation 1994~1998..04
 Underground Construction 2009~2012 (NJC)..03
 Ghazi Barotha Hydropower Project
 GBHP Consultant 1999~2003 (PHC)..05
 GBHP XEN(P/Complex) 2004~2008………..05
 LESCO 2013~2015………..03
 Director(Rates) & PD(BC) WAPDA 2015~2016………..02
 Diamer Basha Dam Project 2017~Todate….....01
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6. NEELUM JHELUM HYDROPOWER PROJECT
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INTAKE 41 KM
U/s MZD
POWERHOUSE:
22 KM D/s MZD
Locationofproject

7. 1. TBM first time, in PAKISTAN used for
Neelum Jhelum Hydel Project
2. Hydraulic tunnel passing under River
Jhelum bed more than 200m below
3. Needle Beam Formwork used for
tunnel lining first time, in PAKISTAN
Unique Features of Project
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8. SALIENT FEATURES
700
600
1600
1400
1200
1000
1000
1200
1400
1400
1400
1200
1000
1000
KUMI
1615
2100
A4
1200
1400
1400
1200
1000
1200
1400
ZIARAT
KULLIAN
CHATTAR KALAS
KHATTABAD
KUNDIAN
TALOKA POWER
STATION
JHELUMRIVER
SUSPENSION BRIDGE
ZAMAN ABAD OUTLET
1600
1600
1600
1638
800
MEHLAM
ZIARAT
CHANDERA
CHAMKOTAL
AZIM KHAN
KUMI KOT NULLAH
Gorsi pain
Gorsi Bala
CHANALBANG
JABBIAN
MIAN NUR
SHAH
RIVER
1600
NEELUM-JHELUM HYDROELECTRIC PROJECT - PLAN & LONGITUDINAL SECTION
LONGITUDINAL SECTION ALONG TUNNEL AXIS
1200
1400
1600
1800
2000
2200
2400
2600
2600
2400
2200
2000
1800
1600
1400
1200
2000
2200
2400
2600
2800
2800
2600
2400
2200
2000
1800
1600
1400
1200
1200
1400
1600
1000
800
800
1000
1200
1400
1600
1800
TITHWAL
3000
2500
2000
1500
1000
500
AGARNULLAH
JHELUMRIVFR
POWERSTATION
SURGEGALLERY
JHELUMRIVER
NEELUMRIVER
500
1000
1500
2000
2500
3000
NAUSERI DAM
& INTAKE
SUSPENSION
BRIDGE
1200
1400
1600
THOTHA
KHAH BANDRE
JHELUM
KAROLI
BRIDGE
GARHI DOPATTA
MALSI PAIN
T 4A3
A2
T 3
T 2
T 1
A1
T 6
A 6
A 5
T 10
1800
1860
300
1600
1400
1200
1000
1200
1200
1000
800
DANNA
PATHANI
BALA
FOREST
FOREST
SHAH KOT
PATHALI
DAKAN
HASMAN
UNIT FOREST
2800
2800
2800PATHAL PADI
PANJKOT
CHANATHRA
NAUSADDA
NULLAH
2800
NULLAH
FOREST
NADI
NEELUMRIVER
FOREST
T10T 6
T 5
T 4
T 3T 2
T 1
T O
13608465 2393 5767
32178
6461 3484
AGAR
NULLAH
2400
PARORAH
RIVER
NULLAH
ROAD METALLED
ROAD GRAVEL
VILLAGE &CITY
A. TUNNEL ADIT PORTAL
T. TUNNEL INTERSECTION
LEGEND
PLAN
TILPATRAN
1600
1600
MAJHO
2800
2800
CONCRETE AGREGATE AREA
SEDIMENT BASIN COLONY
SPOIL DEPOSIT
CONTRACTOR PLANT
(Chattarklas)
SPOIL DEPOSIT
COLONY, SPOIL DEPOSIT
SPOIL DEPOSIT
TUNNEL OUTLET
SPOIL DEPOSIT
SWITCHYARD,OFFICES
SPOIL DEPOSIT
PLANT AREA
MOSQUE,SCHOOL,PLAYGROUND AND GRIDSTATION TO BE
REMOVED FOR USE OF THE AREA AS MAIN CONSTURCTION PLANT
SITE AND AFTERWARDS FOR MISCELL, PERMANENT SERVICES
(Chanal Bang)
(Baraora)
(Majohai)
(Malsipan)
(Nauseri)
(Ghrat Nar)
(Nausada)
(Panjkot Valley, Nauseri)
(Panjkot Valley, Nauseri)
(Thotha)
SPOIL DEPOSIT
(Thotha)
(Zamanabad)
AGARNULLAH
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9. Contractor:
Consortium of China Gezhouba Group Co. LTD. and
CMEC of China (CGGC-CMEC Consortium).
Consultants JV (August 2008)
MWH International (USA)
NORPLAN (Norway)
NESPAK (Pakistan)
ACE (Pakistan)
NDC (Pakistan)
WAPDA Deputationist (Pakistan)
Project cost:
Rs. 130 billion
Rs. 500 Billion (Revised)
SALIENT FEATURES
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10. SALIENT FEATURES
Head Pound:
FSL 1012.5 m
Min. O.L 1006.0 m
Dam: Nusseri:
Type Conc. Gravity & Rock Fill
Max height 60 m
Crest length 160 m
Spillway:
Type 4 No. Gated and free flow
Discharge 7600 m3/s at 1013.0 m
Crest Elev. 1012.6 masl
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11. SALIENT FEATURES
Headrace Tunnel: 28.5 Km
Twin each 52~58 m2 ɸ, 19.60 Km long
Single 100 m2 ɸ, 8.94 Km long
Adits & others 10 Nos. & 13.50 Km long
Surge Shaft (Vertical) 9.50 m ɸ , 354 m
Tailrace tunnel 3.90 km
Power House :
Cavern of Power house 130x20x40m
Cavern of Transformer hall 125x16x15m
Discharge 280 m3 /s
No. of units 4 Nos. vertical Francis
(Each 242.25 MW)
G. Head 420 m
Inst. Capacity 969 MW
Annual Energy 5150 GWh4/25/2018 11Neelum Jhelum Hydel Project

12. Most Critical Activities in Tunneling
1) Face mapping & Geology Record
2) Blast Design approval (based on Geology)
3) Scaling after blast (for Safety)
4) Ingress of water (depletion of water from face)
5) Type of support (based on geological formation)
6) Advancement W/O support works
7) Selection of Rock bolts
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13. 4/25/2018 13

14. Sequence of tunnel Excavation
1
23
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5
4

15. Sequence of tunnel Excavation
8
7 6
5
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16. 4/25/2018 16

17. Forces on Tunnel
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18. Record Maintenance
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Formation of Invisible Arch
above the Crown
Rock Bolts
Invisible Arch
Crown is
strengthened, being
weak to collapse

19. Record Maintenance
• Geology Section
a) Face mapping
b) Blast Design
c) Progress Report of excavation
• Civil Section
a) Approval of Blast Design, Drilling, Charging
b) Support works
c) Progress Report of excavation & support works
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20. Geological Mapping of Face
 Face mapping after every excavated round.
 Identification of rock, recording of discontinuity and any shear zone present
 Photographic record of each face maintained for future reference.
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GeologySection

21. 4/25/2018 21Neelum Jhelum Hydel Project
CIVIL SECTION
Daily Shift
Report

22. 4/25/2018 22Neelum Jhelum Hydel Project
Progress Report of Support Works

23. “Rectification of defects inside adits (A5, A6
& Manifold) tunnels surface appeared at
various locations like bulging, cracks,
spalling, wetness/ingress of surface etc to
avoid any untoward situation” in addition
to emergent repair of Collapse in
HST.
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INDIVIDUAL MANAGEMENT CASE STUDY

24. Defects in Adits surface A5, A6 & HR
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25. Defects in Adits surface A5, A6 & HR
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26. Defects in Adits surface A5, A6 & HR
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27. Defects in Adits surface A5, A6 & HR
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28. Defects in Adits surface A5, A6 & HR
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29. Defects in Adits surface A5, A6 & HR
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30. POWER HOUSE PROGRESS C-03
HR Surge Tunnel
A5
D/s Surge Tunnel
A7
A6
HR Tunnel
A8
A10
Surge Shaft
T/HallP/House
Penstocks
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31. Powerhouse
rotated by about
10° and relocated
by about 90 m
POWER HOUSE LOCATION
4/25/2018 31Neelum Jhelum Hydel Project
Critical Activity

32. Power House Excavation
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33. Collapse in HST on 16.12.2010
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• Blast at Sta: 0+009 at 0315 hrs (15.12.2010).
• Mucking completed at 1230 hrs.
• Scaling completed at 1430 hrs.
• Fiber shotcrete 1st layer started at 2100 hrs and
completed at 2255 hrs.
• Collapse occurred at 0145 hrs (0+013).
• Light & Ventilation system restored in tunnel at 0230
hrs.

34. 4/25/2018 34Neelum Jhelum Hydel Project
INDIVIDUAL MANAGEMENT CASE STUDY
16th Dec, 2010

35. Collapse at HST In HR Tunnel
Collapse at HST
on 16.12.2010
A5
HR Tunnel
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36. Collapse in HST on 16.12.2010
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37. Questions:
1) What do you understand the reason to put the
ROUTINE remedial works in adits A5, A6 & Manifold
ON PRIORITY?
2) What type of consequences do you predict, if
remedial repair of these defects was delayed?
3) Suggest way forward for record maintenance for
future use.
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38. POWER HOUSE PROGRESS C-03
HR Surge Tunnel
A5
D/s Surge Tunnel
A7
A6
HR Tunnel
A8
A10
Surge Shaft
T/HallP/House
Penstocks
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39. 4/25/2018 39Neelum Jhelum Hydel Project
Defect Report of A5, A6 & Manifold -C-03
C. A6 ccess to Cable Tunnel
Headrace
Manifold
04 No.
A5 10 No. A6 11 No.

40. 4/25/2018 40Neelum Jhelum Hydel Project
 Meeting with the Contractor:
Special team for repair of Collapsed & defects locations
 Re-arrangement staff & Incentives
Two teams for repair of defects works (day & night shift)
Lunch/tea for staff was to be served at site inside tunnel
Staff presence in tunnel for all activities except drilling/ blast
 Priority works
Access tunnel A5 and Manifold Surge tunnel
Cable tunnel A6
Availability of machinery by Contractor
 Based on daily progress for rectification of defects

41. 4/25/2018 41Neelum Jhelum Hydel Project
 Planning
• Stress Management
 Staffing
•Team Building
 Controlling
• Always be confident and emotionally stable
• Take the situation as a challenge & opportunity to deliver
• Personal satisfaction

42. 4/25/2018 42Neelum Jhelum Hydel Project
By grace of Allah, I completed the work in 02 week
instead of one month target by using the best
techo-managerial skills
 I was appreciated and acknowledged by high
ups of WAPDA and Project authorities.
 Moreover, this act provided me Personal
Satisfaction.

43. SALIENT FEATURES
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44. Geological Mapping of Face
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45. 4/25/2018 45Neelum Jhelum Hydel Project