BEST PRACTICE FOR SUSTAINABILITY IN TUNNELLING AND HEAVY CIVIL ENGINEERING PROJECTS, EXAMPLE CROSSRAIL PROJECT ONE TEAM, ONE SPIRIT

Transcription

1 BTS - SUSTAINABILITY BEST PRACTICE FOR SUSTAINABILITY IN TUNNELLING AND HEAVY CIVIL ENGINEERING PROJECTS, EXAMPLE CROSSRAIL PROJECT ONE TEAM, ONE SPIRIT British Tunnelling Society Sustainability November

2 SUSTAINABILITY IN CONSTRUCTION Betonkalender 2014: Sustainability in Tunnelling Sustainability Environmental Dimension Social Dimension Economic Dimension British Tunnelling Society Sustainability November

3 SUMMARY FOR BEST PRACTICE MEASURES FOR SUSTAINABILITY TBM Tunnelling Usage of groundwater for grout mixing and bentonite mixing operations in lieu of using potable water, Steel Fibre Reinforced Segmental Lining in lieu of conventional reinforced segments (reduction of reinforcement content (kg/m3), Manufacture of light weight aggregate from excavated London Clay, Groundborne noise and vibration monitoring, Fibre Optic Monitoring of sewers. C310 Westbound Tunnel between Plumstead Portal and Woolwich Station Box British Tunnelling Society Sustainability November

4 SUSTAINABILITY IN TBM TUNNELLING INNOVATIVE 18 British Tunnelling Society Sustainability November

5 SUSTAINABILITY IN TBM TUNNELLING Re-Use of Water Environment Agency Dispensation has been obtained to use surplus groundwater from dewatering system for site processes such as damping down dust and TBM processes Rainwater harvested for use in site processes British Tunnelling Society Sustainability November

6 SUSTAINABILITY IN TBM TUNNELLING REUSE OF CHALK Chalk Grassland Habitat in Pitsea The tunnelling process creates chalk slurry that is then dried in a treatment plant to form a chalk cake to allow its reuse. 187,179 tonnes of chalk has been transported to Pitsea in Essex where it is being used to restore a landfill site to a grassland habitat. This type of habitat has been identified as threatened in the UK s Biodiversity Action Plan. The remainder of the chalk is being transported to Kingsnorth where it is being reused to fill a void created by remediation of the site so that it is suitable for future land development. British Tunnelling Society Sustainability November

7 SUMMARY FOR BEST PRACTICE MEASURES FOR SUSTAINABILITY General Site Installation Photovoltaic LED Site Lighting, Hybrid Working Platforms, Recycled Hoarding, Hydrogen Fuel Cell in lieu of generators, Dust suppression using chemical membrane, Biometric Site Access Controls, Diesel particle filters on all construction equipment. C310 Plumstead Portal British Tunnelling Society Sustainability November

8 SUSTAINABILITY FOR GENERAL SITE INSTALLATION INNOVATIVE 18 British Tunnelling Society Sustainability November

9 SUSTAINABILITY FOR GENERAL SITE INSTALLATION EXHAUST EMISSON MANAGEMENT: Diesel Particulate Filter Systems Innovative Exhaust Gas Aftertreatment for Original Equipment and Retrofitting The Baumot DPF BA system Proven in the Swiss VERT test Filter regeneration even at low exhaust gas temperatures (from 230 C) High soot precipitation rate Reduction of particle emissions by over 99 % Elimination of hydrocarbons (HC) by 87% Reduction of carbon monoxide (CO) by over 97% No increase in nitric oxides (NOx) The Baumot DPF BA-B system proven in the Swiss VERT test Filter regeneration even at low exhaust gas temperatures (from 200 C) High soot precipitation rate Reduction of particle emissions by over 99% Elimination of hydrocarbons (HC) by 87% Reduction of carbon monoxide (CO) by over 97% No increase in nitric oxides (NOx) VERT- and TÜV (PRC II) certified, approved for the London low emission zone by EST, by the Dutch RDW and by the Danish DTI British Tunnelling Society Sustainability November

10 SUSTAINABILITY FOR GENERAL SITE INSTALLATION EXHAUST EMISSON MANAGEMENT: Air Pollution-DPFs Fully compliant across both sites Over 20 pieces of plant with either DPFs or Euro IIIB Dispensation for safety critical compressor backup station (TBM backup supply) and cranes British Tunnelling Society Sustainability November

11 SUSTAINABILITY FOR GENERAL SITE INSTALLATION EXHAUST EMISSON MANAGEMENT: Advanced Systems Euro 4 Engines JCB Telehandler on C310 Plumstead site Efficient engine - No DPF needed Hybrid Technology British Tunnelling Society Sustainability November

12 SUMMARY FOR BEST PRACTICE MEASURES FOR SUSTAINABILITY Heavy Civil Engineering General 90 % of construction waste materials will be re-used and recycled, Soil washinbg facilities, Usage of Clamshell excavators, Bored Piles with Polymer Support in lieu of Bentonite (Polymer is biodegradable), Crushed concrete as general fill material for working platforms/haul roads etc., Re-usage of hydraulic props in lieu of steel props, Ultra low carbon concrete, Jet-Grout Spoil Arisings to fill temporary construction shafts in lieu of special disposal, Non-destructive pile removal. C310 Tandem Lift for D-Wall Cage Installation British Tunnelling Society Sustainability November

13 SUSTAINABILITY IN HEAVY CIVIL ENGINEERING INNOVATIVE 18 British Tunnelling Society Sustainability November

14 SUSTAINABILITY IN HEAVY CIVIL ENGINEERING INNOVATIVE 18 British Tunnelling Society Sustainability November

15 SUSTAINABILITY IN HEAVY CIVIL ENGINEERING HMJV s Re-use of 1400 tons of steel propping HMJV has built two identical 350m long portal structures. The 1400ton steel propping from the first portal structure (see pictures) were reused nearly to its entirety for the second portal structure. This was able to be achieved through successful collaboration betwen the designers of the Contractor and Client by reviewing and optimising the design. British Tunnelling Society Sustainability November

16 SUSTAINABILITY IN HEAVY CIVIL ENGINEERING Waste Management The construction industry is the largest contributor to waste in the UK; each year 20 million tonnes of construction waste is sent to landfill. HMJV have made a commitment to exceed the Crossrail targets by diverting 95% of construction and demolition waste from landfill and recovering 100% of all clean and excavated material. British Tunnelling Society Sustainability November

17 SUSTAINABILITY IN HEAVY CIVIL ENGINEERING WASTE Reusing Waste U1 exemption obtained from EA to reuse tarmac used for diversion roads at North Woolwich portal U1 exemption obtained from EA to crush and reuse concrete from the site car park into granular fill for site use. Reducing Waste 100 m of ecosheet hoarding used at North Woolwich Portal. The ecosheet panels are made from 100% recycled plastic Unlike plywood hoarding ecosheet can be reused on other projects this will reduce project waste Once the sheets have met their end of life they will be returned to the manufacturers for recycling British Tunnelling Society Sustainability November

18 SUMMARY FOR BEST PRACTICE MEASURES FOR SUSTAINABILITY Miscelleanous Social Sustainability: Apprentices/TUCA (Tunnelling Academy), Lorry Training, Safety Standards, Health and Wellbeing, Environmental Assessment rankings CEEQUAL and BREEAM. C310 Plumstead Portal Gantry Crane British Tunnelling Society Sustainability November

19 MISCELLANEOUS SUSTAINABILITY CARBON REDUCTION P P P P P P P P P P P (2013) P P P P P P (2-14) P P P P P P (2015) P P The amount of CO2 emissions the construction industry can influence is significant, accounting for almost 47% of total CO2 emissions in the UK. HMJV are committed to preventing pollution by reducing the projects CO2 levels by 10%. Monthly Forecast Carbon Footprint to May 2015 Monthly Actual Carbon Footprint Data to December 2013 Forecast Carbon Footprint Carbon Footprint with 10% Reduction Target British Tunnelling Society Sustainability November

20 MISCELLANEOUS SUSTAINABILITY CARBON REDUCTION To ensure this target is met HMJV use: Hybrid MEWPs and Lighting Towers, which emit 94% less carbon compared to regular plant Eco-cabins with motion sensor lighting and double glazing LED site lighting British Tunnelling Society Sustainability November