Gladstone Coal Terminal expansion

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As part of the expansion to increase the capacity at Gladstone Port Authority‘s RG Tanna Coal Terminal from 30mtpa to 60mtpa, works were undertaken to increase storage capacity.

The terminal receives coal by rail from the southern Bowen Basin (from Gregory in the north to South Blackwater) and from Moura and Callide.

The stockpile expansion included the construction of unloading and reclaim systems. The unloading system included transfer and stockpile conveyors with a travelling tripper supported on elevated gallery structures. The reclaim system included the construction of an underground tunnel with three chambers to accommodate a conveyor and stockpile discharger that delivers coal on to the shiploading system.

GHD provided structural, mechanical and electrical design for the coal stockpiling and reclaiming system on behalf of the Gladstone Port Authority, and acted as construction superintendent.

The reclaim tunnel was constructed below the watertable using precast concrete arch units, resulting in significant economies in cost and construction time compared with the traditional in-situ concrete systems. With the assistance of Parbury Technologies, a waterproofing system was developed to tolerate expected joint movements and resist water and earth pressure loads.

The travelling tripper was designed to transfer coal from the stockpile conveyor to stockpiles at up to 6000 tonnes per hour. The tripper control is fully automated to allow coal to be delivered anywhere along the length of the stockpile conveyor.


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