DavyMarkham have a long and proud history in the Mining and Tunnelling sector with some particular highlights being the building of the tunnelling equipment used for the Channel Tunnel, Channel Tunnel Rail Link, London Underground, Moscow Metro and the Dartford, Rotherhithe and Mersey tunnels.
DavyMarkham has a long standing association with the mining industry across the globe and is ideally placed to provide hoisting systems for these mines. As more accessible natural resources are exhausted new mines tend to extract minerals from greater depths with higher payloads. We supply hoists of all types and sizes for all underground mines, including friction, single drum, multi-rope Blair and sinking hoists, stage winches, haulage units, head sheave and deflector sheave assemblies..
DavyMarkham have unrivalled expertise in the supply and installation of over 300 hoists worldwide and have supplied equipment for some of the deepest mines in North America and some of the planets highest mines in the Andes.
As long ago as 1890 Markham started producing tunnelling shields for both the London and Moscow underground rail systems and have since been involved in many prestigious tunnelling projects.
Today DavyMarkham manufacture complete tunnelling boring machines, parts of machines and associated ancillary equipment. We are accomplished in the design of bespoke equipment to overcome specific project demands.
HudBay Minerals Inc, Canada
Scope: Design, manufacture, delivery, installation and commissioning of three Mine Hoists.
HudBay Minerals Inc. commissioned DavyMarkham to provide a full service of designing, manufacturing, delivering, installing and commissioning of mechanical and electrical parts for three mine hoists.
The hoists are for a new underground mine on a green field site in rural Manitoba and consist of a 16 feet diameter double drum production hoist, capable of hoisting a 16 tonne payload from a depth of 1,000 metres, a 14 feet diameter double drum service hoist, with a payload capacity of 12 tonnes, and an eight feet diameter single drum auxiliary hoist. The equipment was designed specifically to meet HudBay Minerals Inc. shaft sinking and final duty requirements.
The mechanical equipment for the three hoists was fabricated, machined, painted and trial assembled before being packed and secured for shipping. It was then delivered to the Lalor Mine project site in 24 containers weighing a combined 470 tonnes. The hoists travelled by sea to Montreal, some 1,400 miles away from their final destination, before being carried by train to Winnipeg and then trucked to the mine in the small town of Snow Lake. A team of DavyMarkham engineers then travelled to the rural location, where temperatures fall below thirty degrees Celsius, to assist with the six month installation process.
Canadian company HudBay Minerals Inc. was founded in 1927 and has mined approximately 145 million tonnes of ore during that time. Through ongoing investments in mines, infrastructure and people, they work hard to ensure their operations consistently meet production targets and cost objectives.
HudBay Minerals Inc. has invested $500 million into this particular project. The mine is currently the largest new zinc mine; however there are also gold, copper and silver deposits. It has a life expectancy of roughly 15 years.
Scope: 6.4m dia Production Hoist
IAMGOLD is a leading global gold producer, with eight different mining operations in North America, South America and Africa.
DavyMarkham was asked to design, manufacture and supply a 21ft (6.4m) diameter production hoist, with a drum width of 8ft (2.4m) and a payload capacity of 44,000lbs (20,000kg) and an 18ft (5.5m) double drum service hoist, together with associated clutch assemblies and multi-channel hydraulic brake control system for IAMGOLD’s Westwood project.
The Westwood project is located two kilometres from the IAMGOLD’s existing Doyon Mine operation in Northern Quebec, within one of Canada’s most prolific gold production areas. The production hoist will be able to operate at depths down to 8,700ft (2,652m).
Rigorous engineering and finite element analysis allowed DavyMarkham’s engineers to predict stress levels and deflections at all critical points in the hoist and to recommend a smaller 18ft diameter service hoist with geared drive, as the optimum size commensurate with duties, rather than the more expensive 19ft diameter, direct drive configuration originally specified.
Markham & Kawasaki Heavy Industries
Nishimatsu Corporation Co Ltd of Japan commissioned a collaboration between Markham and Kawaski Heavy Industries to design, manufacture, install and commission a Slurry TBM for the extension of the Docklands Light Railway from Canary Wharf crossing south under the river Thames to Greenwich Station; consisting of twin tunnels each 4.2km in length.
Design, manufacture, install & commission
Metrosud commissioned Markham to supply a roadheader within an extending shield for the extension of the Naples Metro.
Muck was removed from the face by chain conveyor housed in the bottom of the 6.5m dia shield which in turn loaded muck skips on rails.
Segments delivered to the rear of the shield enabled construction of the tunnel lining.
Design & Maufacture Sheild for Amec Construction
London Underground was experiencing problems with acid in the ground at Old Street on the Northern Line compromising the integrity of the old cast iron segments.
Amec Construction commissioned Markham to design and manufacture a shield to enable a 90m long section of existing tunnel to be replaced with stainless steel segments of a slightly larger diameter.
The shield was designed to allow for construction during the night whilst trains continued to operate through the shield during the day; the rails being supported on an integral bridge minimising any disruption to the busy commuter line.
Robbins Markham Joint Veture
Robbins Markham JV were selected by TML design and supply two marine running tunnel TBM's.
Each 8.36m dia machine were required to drive 25km through chalky marls 40m below the English Channel. The overall length of each machine was 250m weighing in excess of 1,350 tonnes.
Access the video for more information on the Machining, Fabrication, Build, Test and Assembly capability of DavyMarkham Limited in the Mining and Tunnelling sector.