SLIDE 1
Mahatma Gandhi Road Sewer Pump Station
Presented by:
Kendall Slater Hatch Goba
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Mahatma Gandhi Road Sewer Pump Station Presented by: Kendall - - PowerPoint PPT Presentation
Mahatma Gandhi Road Sewer Pump Station Presented by: Kendall - - PowerPoint PPT Presentation
Mahatma Gandhi Road Sewer Pump Station Presented by: Kendall Slater Hatch Goba Your Organisation Logo here Introduction Your Organisation Logo here Contract Details Employer: eThekwini Municipality Water and Sanitation Engineer: Hatch
SLIDE 2
SLIDE 3
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Contract Details
Employer: eThekwini Municipality Water and Sanitation Engineer: Hatch Goba in association with: Drennan Maud and Partners Contractor: Group Five Ltd in association with: Coleman Tunnelling (Microtunnel Sub contractor) EsorFranki (Piling Sub contractor) Hidrotech Systems (Mechanical) Kaltron (Electrical)
SLIDE 4
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Location
SLIDE 5
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Tunnel Horizontal Alignment
SLIDE 6
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Pipe Construction
- 100 year life
- 40 Mpa, 145mm wall, HDPE Lining
- Duplex Stainless Steel Collars
- Gollwitzer – Germany
- 1,2m Diameter
SLIDE 7
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Micro Tunneling
- Slurry Micro TBM.
- AVN 1200 TC.
- Refurbished by Herrenknecht, Germany.
- Controlled on Surface.
- GPS and Gyroscope navigation system.
- Direction and movement controlled by
Hydraulic Jacks.
- 4 degree steering angle.
- Bentonite lubrication system and face
pressurisation.
- Intermediate Jacking Stations.
- 750 kN Jacking force
SLIDE 8
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Micro Tunneling
SLIDE 9
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Micro Tunneling
SLIDE 10
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Pump Station
- 3 Components
- Screening Chamber
- Main Sump
- Surface Structure
- 6157-100-005 Pump Station General Layout.pdf
- All unique and individual challenges
SLIDE 11
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Screening Chamber
- Use of existing structure
- Space constraints
- Cost Saving
- Tunnel Reception Pit
- 3 Screening Channels
- Mechanical Screens
- 40 Mpa, 19mm Concrete
- 40mm Cover
- Xypex Epoxy paint protection
SLIDE 12
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Main Sump
- Outer shell with Diaphragm
Walls
- 17m deep, 1m thick
- Panels to form 23m x 17m
rectangular structure.
- 40MPa Concrete, 75mm
Cover
- 3.5m thick Concrete Base
- 1000 cubic meter underwater
pour.
- 4500 cubes excavation
- Dredge/excavator
SLIDE 13
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Main Sump (Cont)
SLIDE 14
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Main Sump (Cont)
SLIDE 15
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Surface Structure
- Architectural Feature
- Public Access
- Environmentally Friendly
- Limited Height
- Complex Formwork
- Roof Garden
- Tifa formwork with Special
Shutter specification to outer walls.
- Waterproofing paint on
product under topsoil.
SLIDE 16
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Mechanical & Electrical
- 4 Immersible Pumps – 250kw
each
- 1 m diameter manifold Pipes
- Combination Stainless
Steel/HDPE
- Backup Generator
- 3 Mechanical Front Rake
Screens
- Sluice Gates
- Fully Automated
- Variable Speed Drives
- Odour Control System
SLIDE 17
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Summary
- Multi Discipline Project
- Unique Solutions
- Country Firsts
- Various uses of Concrete
- Water Retaining
- High Finish
- High Spec
- Shotcrete
- Protection
- Environmentally Friendly Structure with Combination industrial,
public access.