Diaphragm walling process MMR Panel Hearing 5 th September 2016 Peter Fearnside 1
Bauer MC ‐ 64 – Diaphragm Wall Rig • 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 2
• 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) 3
105 tonne support cranes Bentonite Silos T-panel De-sanding plant Corner-panel 20 tonne D-wall rig excavator 4
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