PORT WORKS DESIGN MANUAL PART 3 Guide To - The University ...

36deformation of the reclamation should be monitored to ensure safety during mud removal(2) Accelerated ConsolidationThis method involves placing granular fill in thin layers on top of the mud wave andaccelerating the consolidation of the mud with the installation of vertical drains andsurcharging. This method avoids dredging of the disturbed mud and thus reduces the needto replace the void with fill. The magnitude and rate of settlement should be estimated. Astability check will be required if surcharge is used to accelerate the rate of consolidation.As long as sufficient time for consolidation can be allowed in the development programmefor the newly reclaimed land, this is an economical method of rectification, particularlywhere the mud wave involves movement at a deeper level.(3) Partial RemovalSometimes, it may be advantageous to partially remove the disturbed mud in order toaccelerate the time of consolidation and to reduce the magnitude of settlement.is a combination of the methods mentioned above.are removed while lower stiffer mud is left in place.remaining disturbed mud is still required.This methodThe weak upper layers of disturbed mudAccelerated consolidation of theStability and settlement calculations (see Chapter4 of this part of the Manual) are required to check the effectiveness of the proposed remedialworks.