Targeted Ground Engineering for a Gas Plant in Pilbara Region, Australia

摘要

This paper presents the geotechnical challenges faced and targeted ground improvement adopted during the construction of a gas processing facility in the Pilbara region of Australia. The ground improvement solutions implemented on the project included dynamic replacement, rigid inclusions, stone columns, geogrids and geowebs. The ground improvement technologies are discussed in the following context (ⅰ) basis of selection, (ⅱ) design development details, (ⅲ) results of the pre-production/performance testing where available, (ⅳ) performance of constructed infrastructure where available, and (ⅴ) lesson's learned during construction. Additionally, the limited success of a high impact roller as an effective and efficient alternative to conventional sheep foot roller for earthwork compaction is also addressed.