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Shaft Drilling

	West Wallsend Shaft Repairs
	Repair of coal mine ventilation shaft.....
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	Dendrobium Mine Shafts 2 and 3
	The two shafts were bored at 4m and 5m diameter respectively and to 270m deep.... 2009 WINNER - Category 4, 2009 NSW CCF Hitachi Earth Awards
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	North Goonyella Ventilation Shaft No.2
	Jul 05 - Jul 07 PEABODY COAL GOONYELLA COAL MINES Shaft bored form surface to 84m depth at 6.8m diameter and steel lined through Tertiary strata, then drilling completed at 6.15m diameter to coal steam level at 272m total depth. Supplied and installed 5.2m diameter composite reinforced concrete and steel liner from surface to 272m depth. This shaft is the largest of its type drilled in the world. Upper 84m of strata consists of Tertiary deposits of saturated sand, clay and lignite. The Tertiary was drilled using a 6.8m diameter cutterhead to provide clearance for 6.15m diameter externally reinforced intermediate steel liner extending to the Permian sandstone at 84m depth. The remainder of the shaft has been drilled at 6.15m diameter to the production coal steam level 272m total depth from surface. A 5.2m diameter composite reinforced concrete and steel liner was installed from the top of the coal to one metre above surface grade. The entire construction sequence of drilling and lining the shaft is being completed while the hole is filled with drilling fluid. The drilling fluid includes additives intended to stabilise the excavation by inhibiting the clay and shale from swelling and subsequent deterioration while protecting the sand from erosion until the steel liners have been installed and grouted. Works also included construction of concrete collar, presink, dams and roadworks. Value: $14 000 000


	North Goonyella Ventilation Shaft No. 4
	Sep 03 - Aug 04 NORTH GOONYELLA COAL MINES PTY LTD Design and construct 2.5m finished diameter shaft 260m deep. Upper 108m of strata consists of Tertiary deposits of saturated sand, clay and lignite overlain by fresh basalt with comprehensive strengths of over 300 mPa and weathered basalt near the surface. The Tertiary was drilled using 3.15m diameter cutterhead to provide clearance for a 2.7m diameter externally reinforced intermediate steel liner extending into the Permian sandstone at 113m depth. The remainder of the shaft is drilled at 2.65m diameter to the production coal seam level 257m total depth from surface. A heavy wall 2.2m diameter external ring reinforced steel liner will be installed from the top of the coal to one metre above surface grade. The entire construction sequence of drilling and lining the shaft is completed while the hole is filled with drilling fluid. The drilling fluid includes additives intended to stabilise the excavation by inhibiting the clay and shale from swelling and subsequent deterioration while protecting the sand from erosion until the steel liners have been installed and grouted. Works also included construction of concrete collar, presink, dams and roadworks. Value: $3 500 000


	Springvale Colliery Ventilation Shaft No.3
	Mar 03 - Aug 04 SPRINGVALE COAL Design and construct shaft bored at 4.25m diameter, to 380m deep with a 3.5m internal diameter shaft lining installed to 357m deep. The ventilation shaft has been drilled by blind boring methods which provided a safe and effective process for the particular ground conditions at Springvale Coal. The upper 63m of strata consists of weak, weathered sandstone. Ardent drilled this section at 4.6m diameter and installed an intermediated casing to stabilise that zone. All of the excavated rock cuttings were brought to the surface. This was important to mines such as Springvale where a minimum number of development headings would make it difficult to handle and remove cuttings from the mine. The steel encased concrete liner is 100 percent watertight and maintenance free for an estimated service life of thirty years. Value: $4 600 000


	Dendrobium Mine Shaft No.1
	Dec 01 - Jan 03 BHP BILLITON DENDROBIUM COAL MINE Design and construct 4.25m finished diameter lined shaft 186m deep. The ventilation shaft was constructed using blind boring and remote lining methods. The shaft was completed prior to the underground tunnels reaching the location of the shaft bottom. This enabled Dendrobium to have the ventilation fan ready to run to take advantage of the shaft when the mine development reached the shaft location. The Dendrobium Mine is located within the environmentally sensitive Sydney Water Catchment area. Abergeldie fulfilled the specific environmental site requirements by employing comprehensive environmental control and monitoring systems. Works also included construction of access road and concrete works for the ventilation shaft. Value: $3 500 000


	Drill Rig 100 Debut The world's largest blind bore drill rig has debuted on the Austar Mine Project. This exciting project involves construction of a 4.5m wide and 465m deep ventilation and access shaft for the Austar coal mine. 2009 CCF Award Success Abergeldie Complex Infrastructure won the 2009 National Category 2 Award for the Erskineville Railway Overbridge. Abergeldie won four categories overall at the NSW & ACT Earth Awards for Construction Excellence. Brisbane Office Construction Abergeldie is constructing it's new premises in Brisbane. Production is running at a fast pace and we hope to be operating from the office by mid August. In the meantime, it's business as usual for the Northgate office. Oxfam Challenge Abergeldie has two teams entered in the 2010 Oxfam Challenge. Abergeldie Green and Abergeldie Black will be walking 100km in 48 hours. CEO Winter Sleep Out Mick braved the cold again for his third winter sleep out with the St Vincent de Paul society.... ASM Fabrications Moves in ASM Fabrications is located in the Regents Park Estate. Abergeldie has a 50% interest in the company which provides a competitive advantage in steelwork. Australia's Biggest Morning Tea Over $25000 was raised to help fund research to find a cure for cancer.