The soil profile in the Yarra Delta in which the Port of Melbourne is located contains a layer of soft, highly compressible marine sediment, Coode Island Silt (CIS), the existence of which imposes geotechnical constraints on the design and performance of infrastructure works. The Deep Mixing Methods (DMM) are a family of ground improvement techniques aimed at improving soil properties at depth, in-situ. This paper initially describes deep soil mixing with a view to improving the engineering properties of CIS and describes procedures traditionally undertaken in building on this material in the port. The paper then outlines research work underway at Monash University into deep soil mixing with a view to method verification an acceptance for use in CIS and other soils of poor quality.
展开▼
