Projects Data

Projects Data

HARAM UTILITY SERVICES PROJECT (HUSP), MAKKAH, KSA

1. GENERAL DESCRIPTION
About the Project
  • The Haram Utility Services Project (HUSP) is a part of a comprehensive project of developing new sewer system tunnels in Makah to serve the extension of the Holy Mosque.
Location
•  Makkah, Saudi Arabia
Project Type
•  Tunnel Sewerage Line Construction
Final Client (Owner)
•  Ministry of Water: National Water Company
Client (Main Contractor)
  • SBG: Saudi Binladen Group, TDRS: Tunnelling, Dam, Rock Stabilization division
Consultants
•  SGS: Stucky & Geotest & STUNEX
Total Tunneling Length
•  4’479m
Tunnel Diameter
•  3’510mm (OD) – 2’800 mm (ID)
Lining
•  Segmental Liningwith integrated HDPE In-Liners.
Excavation Mode
•  EPB Tunnel Boring Machines (02 No.s.)
2. SCOPE OF THE PROJECT
•  TBM launching shafts
•  Tunnels Drives
•  Segmental Lining
•  Ground Stabilization
•  Intermediate Manholes
•  Receiving shafts
•  Grouting
• Soil Conditioning
2. SCOPE OF THE PROJECT
•  TBM launching shafts
•  Tunnels Drives
•  Segmental Lining
•  Ground Stabilization
•  Intermediate Manholes
•  Receiving shafts
•  Grouting
• Soil Conditioning
3. STUNEX SCOPE OF WORK
STUNEX and its partners were providing a Key Consultant Role for this challenging project. Some of our activities included;
TBM
•  Analysis of best Mode for Excavation
•  Assisted in Procurement of appropriate TBMs
•  Logistics
•  Developed Remote Support from Schwanau
•  Operations Optimization to minimize delays
•  Maintenance
Design
•  Shafts
•  Tunnel Lining
Supervision
•  Construction Works
•  Operations
•  Geology
•  Health and Safety aspects
•  QA and QC as per standards
Soil Treatment Design
•  Soil conditioning during excavation
•  Control Water Ingress
Training of Local Engineers
•  Herrenknecht, Germany
•  On Site by STUNEX staff
4. CHALLENGES
Radius
•  Small Radius Curves (R=80m)
Geology
•  Difficult Mixed conditions
   (Rock, Weathered Rock, Soft Soil)
•  Soil Conditioning design during excavation
•  Ground Stabilization
Water
  • Strict ground water environmental requirements to protect Holy Water (Zam Zam).
Monitoring
  • With varying soil covers in a dense urban area, strict Monitoring requirements in the vicinity of the project.

The Haram Utility Services Project (HUSP) is a part of a comprehensive project of developing new sewer system tunnels in Makah. It consists of different parts including the TBM launching shafts, the tunnels, intermediate manholes and the receiving shafts. It is a very challenging project in a dense urban area.

The tunnels are excavated using two EPB TBM’s. Due to the site condition and project requirements, a concrete segmental lining with HDPE inlining has been selected. The project involves several challenges and technical issues including mixed geological conditions, small radius curves and very strict water tightness requirements. 

Stunex has been involved in different phases of the project from selection and procurement of the TBM’s to design and site supervision.

 

Machines: 2 Herrencknecht EPB 2800, Diamater: 3’510 mm
Tunnel application: Sewage
Tunnel length: 4’479 m
Geology: Mixed condition, rock, weathered rock, soft soil
Marwa Bahgat STUNEX, Member of the Board
Client: National Water Company of Saudi Arabia
Contractor: SBG, Business Group TDRS

AL HAEER WASTE WATER CONVEYOR PROJECT, RIYADH KSA.

1. GENERAL DESCRIPTION
About the Project
  • The project aims to reduce the amount of processed sewage water at Al Manfouha STP and transferring it to Al Haer STP through its North and South tunnels.
Location
•  Riyadh, Saudi Arabia
Project Type
•  Sewerage Conveyor Line Construction
Clients (Contractor)
•  Saudi Tumpane – For Project Execution
•  Abul Jadayel Co. for Contracting and Maintenance – For Tender Study
Final Client (Owner)
•  Ministry of Water
•  National Water Company
Consultants
•  ILF (for Supervision)
Total Tunneling Length
•  12’000 m
Tunnel Diameter
•  3’500 mm OD
Lining
•  Segmental Lining
Excavation Mode
•  Double Shield TBM
2. STUNEX SCOPE OF WORK
ABULJADAY EL
  • STUNEX & Basler Hoffmann supported the contractor to study the tender and to prepare alternative
SAUDI TUMPANE
  • During starting the execution, the client faced some problems in the operations of the tunnel excavation. STUNEX was requested to inspect the site (2 months) and to help the staff to improve the production. Identification of the problems in the process were the main tasks.
    As part of a sewage conveyor from Manfouha in Riyadh to Al Haer Sewage Treatment Plant, 37km south of Riyadh; two tunnels namely North and South were tunneled to a total length of 12km. STUNEX backed the contractor to improve the quality and production to complete the project in due time.At a later stage STUNEX also assisted the Client in rectifying problems associated with Tunnel Boring Machine and its installed equipment.

    BURAIDAH MAIN SEWER LINE TUNNEL, KSA.

    1. GENERAL DESCRIPTION
    About the Project
  • Sewage Network will be completed by the     construction of a Main Sewer Line to the     treatment plant.
    • Location
    •   Buraydah, Al Qassim Region, Saudi Arabia
    Project Type
    •   Main Sewerage Line Construction
    Clients (Contractor)
    •   CWC in Dammam
    •  Saudi Tumpane in Riyadh
    Final Client (Owner)
    •  Ministry of Water
    •  Directorate of Water (Al-Qassim Region)
    Consultants
    •  Khatib & Alami
    Total Tunneling Length
    •  14’800 m
    Tunnel Diameter
    •  2’400 mm and 2’600 m
    Lining
    •  Segmental Lining / Pipe Jacking
    Excavation Mode
    •  Tunnel Boring Machine
    2. STUNEX SCOPE OF WORK
    Design
    •  Tunnel Lining
    •  Comparison between Segments and Pipes Lining
    •  Shafts
    Route of the Tunnel
    •   Best Route for the tunnel
    Geological Study
    •   Collected the existing info
    •  Study of the borehole already executed
    •  First conclusions
    Site installation
    •  Define the most rational set up to permit an execution in time.
    Final Client (Owner)
    •  Ministry of Water
    •  Directorate of Water (Al-Qassim Region)
    Shafts
    •  Comparison between the different methods
    •  Best method to build the shaft safe and economically
    TBM
    •  Choice of the mode of excavation
    •  Comparison between Slurry and EPB
    •  Supplier offers study
    •  Logistic design
    •  Mode of mucking
    Soil Treatment
    •  Mode of lubrication
    •  TBM launching area
    •  Soil conditioning during excavation
    Cost Estimation
    • Establishing a complete and detailed cost analysis to permit   the contractor to give the most competitive price
    3. CHALLENGES
    •  Long Drives Pipe Jacking
    •  Curves along the tunnel route
    •  Soil and Ground Water Conditions
    •  Ground Improvement
    •  Sub Surface Obstacles and Utilities
    3. CHALLENGES
    •  Long Drives Pipe Jacking
    •  Curves along the tunnel route
    •  Soil and Ground Water Conditions
    •  Ground Improvement
    •  Sub Surface Obstacles and Utilities

    STUNEX provided its assistance for tender analysis and cost estimation of the project when the project was first announced.The estimation was provided as per two variants that are pipe jacking and segmental lining.We also assisted them in choosing the right method for the shaft construction