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首页> 外文期刊>Australian Geomechanics >USE OF DREDGED MATERIALS IN A MOF EMBANKMENT,. BARROW ISLAND, WESTERN AUSTRALIA,
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USE OF DREDGED MATERIALS IN A MOF EMBANKMENT,. BARROW ISLAND, WESTERN AUSTRALIA,

机译：在MOF路堤中使用已损坏的材料。巴劳岛，西澳大利亚州，

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This paper describes aspects of the geotechnical design and construction of a Materials Offloading Facility (MOF) embankment up to 20m high, that consists of material sourced from dredging and plant site development works for the Chevron-operated Gorgon Project - the largest single resource project in Australia's history. The MOF is located on the eastern side of Barrow Island (BWI), a Class A Nature Reserve. Several significant challenges were faced in sourcing the range of materials required for the MOF. These challenges related to the local geological conditions on BWI and in the near shore environment proposed for the dredging works. Source rock from BWI was used in construction of the initial section of causeway from Town Point to the Pioneer MOF (PMOF) platform, however, this paper only refers to the PMOF and beyond to the MOF Head where the LNG Jetty Abutment structure is located. The materials for these works were sourced from the near shore environment and generally comprised carbonate rich limestone and calcarenite. These dredged materials were considered primarily as rock fill and methods for sourcing and characterisation of the rock fill, selection of parameters, geotechnical analyses and relevant construction details are also discussed in this paper. Design parameters, based on particle size distribution, unconfined compressive strength, particle shape and roughness characteristics were selected and slope stability analyses were undertaken using the limit equilibrium method. Load deformation analyses applied the finite elements coded in the latest readily available geotechnical software. Potential creep and seismic effects were taken into consideration. High strength geotextile reinforcements were used to achieve the required long term embankment stability. Various compaction methods including the relatively new Cofra Dynamic Compaction (CDC) method were adopted at different levels and locations of the embankment and innovative Seismic Surface Wave geophysical methods were combined with Plate Load Testing for verification of the heterogeneous fill materials to ensure the design assumptions would be realised.
机译：本文介绍了高达20m高的材料卸载设施（MOF）路堤的岩土工程设计和施工，其中包括从雪佛龙公司运营的Gorgon项目（该项目是美国最大的单一资源项目）的疏and和工厂现场开发工作中获得的材料。澳大利亚的历史。 MOF位于A级自然保护区Barrow Island（BWI）的东侧。在采购财政部所需的各种材料时面临着几个重大挑战。这些挑战与拟进行挖泥工程的BWI和近岸环境中的当地地质条件有关。 BWI的烃源岩被用于从Town Point到Pioneer MOF（PMOF）平台的堤道初始段的建设，但是，本文仅指PMOF，而不仅仅是LNG码头基台结构所在的MOF头。这些工程的材料来自近岸环境，通常包括富含碳酸盐的石灰石和钙钙石。这些疏materials的材料主要被认为是岩石填充物，本文还讨论了岩石填充物的来源和表征方法，参数选择，岩土分析以及相关的施工细节。根据粒径分布，无侧限抗压强度，颗粒形状和粗糙度特性，选择设计参数，并使用极限平衡法进行边坡稳定性分析。载荷变形分析应用了在最新的岩土软件中编码的有限元。考虑了潜在的蠕变和地震影响。高强度土工布增强材料用于实现所需的长期路堤稳定性。在路堤的不同位置和位置采用了各种较新的压实方法，包括较新的Cofra动态压实（CDC）方法，并将创新的地震表面波地球物理方法与板载试验相结合，以验证非均质填充材料，以确保设计假设能够满足要求。被实现。

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