Diaphragm walling process MMR Panel Hearing 5 th September 2016 Peter - - PowerPoint PPT Presentation

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Diaphragm walling process MMR Panel Hearing 5th September 2016 Peter Fearnside

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• Based on a 105 tonne crawler

crane

• Excavation carried out with

clamshell type grab

• 18.4m high boom
• Noise emission is dominated by

the engine inlets and exhaust

• Measured Sound Power Level

105 dB LwA Bauer MC‐64 – Diaphragm Wall Rig

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• Step 1: construct guide walls around full perimeter of the excavation
• Step 2: excavate panel (day 1)
• Step 2.1: final grab pass (day 2)
• Step 3: insert rebar (day 2)
• Step 4: concrete (day 2)

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Bentonite Silos De-sanding plant T-panel Corner-panel 105 tonne support cranes D-wall rig 20 tonne excavator

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