CONSTRUCTION AND CIVIL CONTRACTING GROUND ANCHORING FOR DAMS

Transcription

1 CONSTRUCTION AND CIVIL CONTRACTING GROUND ANCHORING FOR DAMS

2 GROUND ANCHORING FOR DAMS 2

3 Installation of high capacity ground anchors at Wellington Dam, Western Australia. SRG is a well established professional engineering and contracting operation with over 50 years experience. We operate globally from offices throughout Australia, New Zealand, Hong Kong and the Middle East. DAM ANCHORING SPECIALISTS SRG have a proud and extensive history as dam anchoring specialists, having completed projects throughout Australia, New Zealand, South Africa and Sudan. As specialist contractors, we have developed in-house the highest capacity permanent anchors and longest anchors ever installed in dam structures. Our proven success is a result of our technology and its continual development which enables SRG to provide a tailor made solution for every project, be it anchors of modest or extreme capacity. Our strong civil engineering and general contracting background allows us to fully understand project challenges and to develop cost effective, safe and highly productive solutions in cases of difficult access and complex anchoring requirements. No two dams are the same and our approach to each project is unique and focused on the delivery of outstanding outcomes for all stakeholders. SRG are also equipped to provide a package of relevant disciplines in addition to anchors, such as drilling, access systems and monitoring. EXCELLENCE As a professional organisation and public listed company on the Australian Securities Exchange (ASX), we take our social and corporate responsibility very seriously, and strive to build relationships based on delivery of first class results. The repeat business we receive is a testament to the value, performance and quality of our work. SAFETY, QUALITY, ENVIRONMENT Safety, Quality and the Environment are paramount to SRG. We believe that responsible health and safety management and superior performance is integral to an efficient and successful project. Being a customer focused organisation with an intense desire to be the best in our field, SRG operates and complies with the requirements of the following Quality Management, Environmental Management and Occupational Health & Safety Management Systems. Occupational Health & Safety Management System AS/NZS 480:200 OHSAS 800 Quality Management System ISO 900:2008 Environmental Management System AS/NZS ISO 400:2004 SRG also has Federal Safety Commission accreditation. 3

4 GROUND ANCHORING FOR DAMS World s largest capacity permanent anchors, with a breaking load of over 25,389kN (2,589 tonnes) at Catagunya Dam in Tasmania. Ground anchoring is a well respected solution for upgrading dam structures. Anchoring is a sound and proven mechanism to provide restraint systems to dams and their auxiliary structures. SRG s technology provides reliable and compact permanent anchoring with ultimate single tendon forces currently exceeding 25,300kN, with further developments progressing to even higher load capacities. SRG s achievements in permanent anchoring to dam structures are unsurpassed with an extensive portfolio of projects having installed hundreds of high capacity permanent anchors to many dam structures. We are innovators and industry leaders in the specialist field of high capacity anchors and have installed anchors over 42m in length. The design and installation of anchoring systems requires a high level of diligence if premature failure is to be avoided. Equally vital is testing and monitoring of any anchor system both before and after it enters service. SRG has the resources to test installed anchors of any size for compliance with ISO standards, even in the most difficult locations. SRG has a dedicated team who continue to develop our technology to the next generation of anchors in order to expand our services. SRG provides design and installation services for permanent ground anchors in dams including: Dam wall stabilisation Retaining structures and point loads Slope stability Seismic resistance Hydrostatic uplift due to increased storage The SRG approach is to deliver the highest quality ground anchors, we do this by offering the following: Premium corrosion protection to optimise life expectancy Working with the client to create a solution for the project needs Maintaining market leadership through continued research and development Pledging excellence and exceptional client value from design through to the installation of anchors Ensuring site works duration is kept to a minimum to deliver maximum value 4

5 Transporting 70m long, 9 strand anchor from the fabrication yard to the dam wall at Wellington Dam in Western Australia. PROJECT STATISTICS - DAMS ANCHORED BY SRG DAM LOCATION YEAR HEIGHT (m) NO. ANCHORS MAX ANCHOR TENDON MBL kn LENGTH (m) Keepit Dam New South Wales x 5.7mm 25,389kN 87.7 Hazelmere Dam KZN, South Africa x 5.7mm 25,389kN 95.0 Paradise Dam Queensland mm Grade 500 Bar 54kN 9.0 Fairbairn Dam Queensland mm Macalloy 500 Bar 3,000kN 6.0 Eungella Dam Queensland mm Macalloy 030 Bar 2,022kN 3.0 Scrivener Dam Australian Capital Territory x 50ø 2,022kN 6.0 Roseires Dam Republic of Sudan x 5.24mm 4,300kN 3.7 Wellington Dam Western Australia x 5.7mm 25,389kN 69.9 Tinaroo Falls Dam Queensland x 5.7mm 20,925kN 79.0 Catagunya Dam Tasmania x 5.7mm 25,389kN 78.0 Laanecoorie Dam Victoria x 5.2mm 6,750kN 49. Goulburn Weir Victoria x 5.2mm,750kN 44.0 Lake Manchester Dam Queensland x 5.2mm 6,250kN 05.0 Ross River Dam Queensland x 5.2mm 2,500kN 5.0 Canning Dam Western Australia x 5.2mm 23,75kN 39.2 Hume Dam NTW Victoria x 5.2mm 6,750kN 55.0 Lower Sth Dandalup Western Australia x 5.2mm 5,000kN 4.4 Hume Dam STW Victoria x 5.2mm 6,750kN 49.2 Bickley Dam Western Australia x 5.2mm 3,000kN 30.0 Glenmaggie Dam Victoria x 5.2mm 3,670kN 69.0 Mt Cole Dam Victoria x 7mm 5,559kN 40.0 Chichester Dam New South Wales x 7mm 8,633kN

6 GROUND ANCHORING FOR DAMS Drilling 350mm holes to crest and spillway up to 95m deep - Hazelmere Dam, Durban, South Africa Stressing 9 strand anchor to over 9,000kN using 22,000kN jack with m stroke - Hazelmere Dam, Durban, South Africa Transportation and installation of 73m long 9 strand anchor - Hazelmere Dam, Durban, South Africa 6

7 TYPICAL PERMANENT GROUND ANCHOR TENDON CONFIGURATIONS TENDON STRAND / BAR SIZE MAXIMUM STRANDS PER UNIT MINIMUM BREAKING LOAD BORE HOLE DIAMETER PERMANENT ANCHOR SHEATH SIZE ID / OD CORRUGATED SMOOTH BEARING PLATE SIZE TYPICAL mm No. kn () mm mm mm mm STRAND 5.2mm or 5.7mm / / / / / / / / / / / / / / / / 0 50 / / / / / / / / x 200 x x 200 x x 300 x x 350 x x 400 x x 450 x x 500 x x 500 x x 600 x x 700 x x 700 x x 900 x under development - refer SRG MACALLOY BAR / / / / / x 200 x x 250 x x 300 x x 300 x x 400 x 90 Notes: () 5.2mm strand 250kN or 26kN, 5.7mm 279kN Strand tendons are based on MBL = 250kN (5.2mm strand) (higher strand / anchor capacities available on request) Details listed apply to typical applications and may vary to suit actual applications Macalloy Bar tendons are more commonly used for short anchor lengths Macalloy Bar anchor details exclude allowance for coupling of bars - refer SRG for details if required Temporary anchor solutions available upon request PERMANENT STRAND ANCHOR PERMANENT BAR ANCHOR 7

8 ABOUT US We are an Australian complex services company. We solve the challenging and difficult problems that others can t. Our vision is to make the complex simple for our customers. We have people working across Australia and the world bringing our unique blend of innovation, precision, technical excellence and safety to every mining and infrastructure project we touch. Since 96, we have worked on many of the iconic stadiums, skyscrapers, bridges, dams, structures and mining projects, both here in Australia, and overseas. That s because we re not afraid to challenge what is considered possible. Issue 207/05 GET TO KNOW US AT SRGLIMITED.COM.AU AUSTRALIA / NEW ZEALAND / AFRICA / MIDDLE EAST / ASIA PACIFIC / HONG KONG CALL SRGLIMITED.COM.AU