ShaftCon Holdings delivers a wide range of Mining, Shaft Sinking, Secondary Support, Manufacturing and Infrastructure Development Projects to its clients across diverse sectors. ShaftCon specialises specifically in the gold, diamond, coal and platinum mining industry.
In Angangueo, for example, the client requested different construction processes, one of them being an emergency staircase in a vertical shaft, with 3m resting points between transportation points. After explaining the risks, we designed a zigzag structure with resting points every 1.5m, which made it easier to see and to keep the …
This article describes the main stages involved in the construction of the vertical shafts (large-diameter vertical wells), which are necessary for the subsequent construction of the tunnel´s sections. The different risk …
Grupo Necaxa is a strong engineering and development company, with unique skills in the construction of vertical shafts, and our commercial team was rapidly able to prove to different mining companies, such as First Majestic at La Parrilla and Del …
within a mine and the surface. In most cases these shafts are not easily accessible for inspection; however, for operational reasons a safe and reliable method of inspection is required. The VOIS (Vertical Opening Inspection System) is intended to provide this capacity and form the basis of an inspection and survey platform for vertical shafts.
The concept of the Vertical Opening Inspection System (VOIS) is very simple, and developed naturally from early crude attempts at shaft inspection which essentially involved deploying cameras into vertical shafts via winch. The system consists of a sensor payload (or pod) which is deployed down a shaft via a winch and
In Mexico, a number of substantial shaft sinking projects were carried out in the latter part of the 18th century. ... Newcomen's first steam-powered water pump was erected at a coal mine in Staffordshire in 1712. It was much more efficient than the Savery machine and raised 120 gallons a minute over a distance of 153 feet. Thomas …
It has been nearly 60 years since the technology was used to reform wall rock of vertical shaft in coal mine in China for the first time, and the existing technology can basically meet the needs of constructing 1000m deep vertical shaft. ... [14] GB50511-2010 Code for Construction of Coal Mine Shaft and Drift Engineering[S] in Chinese. Google ...
This article describes the main stages involved in the construction of the vertical shafts (large-diameter vertical wells), which are necessary for the subsequent construction of the tunnel´s ...
In the mine construction, the surface pre-grouting technology is an important method to prevent water blast in excavation process of vertical shaft when the shaft must pass through the thick, water-rich and high water-pressure bedrock aquifer. It has been nearly 60 years since the technology was used to reform wall rock of vertical shaft in coal mine …
A Snapshot of China's Coal Progress Three papers presented at the Shaft Design and Construction conference looked at how shaft-sinking technology has developed in China in recent years, and at the construction of a 30 million mt/y mine—a paper included, the chairman said, not for its specific focus on shafts per se, but as an indication of the level …
Top Ten Worlds Deepest Mines in South Africa Mponeng Gold Mine. AngloGold Ashanti's Mponeng gold mine, located south-west of Johannesburg in South Africa, is currently the deepest mine in the …
Many of the shaft projects in Mexico are being designed in phases, with the hoist and equipment purchased capable of reaching the ultimate planned depth of the …
the construction of vertical shafts shows that at least 2 3 of the total duration of the work . T. h[s. is spent on shaft . completion . T. h[s, equipment . T. Zjf. and reconstruction . T. ... construction of new mines shows that the use of perm anent buildings and equipment does not exceed 50 % of the design . As it can be seen from the
The Shiji coal mine's vertical shaft passes through the Quaternary topsoil, Jurassic, Carboniferous Permian, and other strata. The topsoil is 7 m in unconformable contact with the lower layer.
vertical shaft. Vertical shafts are the preferred method for deposits deeper than 300 m but the development rate is slow and construction costs are very high. Declines or ramps offer early access to shallow deposits, which develops the ore body expediently, but are generally developed at a gradient of approximately 12 per cent.
The suggested option of the vertical shaft construction utilizing headframe of multifunc-tional purpose versus the traditional technical solution [1-15] allows to reduce labor input …
Vertical shafts that are dedicated to or mainly used for lifting mineral products are called main shafts; and those mainly used for lifting waste rock or gangue, or personnel are called service shafts. ... The depth of a shaft mainly depends on the mining depth, the construction method of the shaft and the capacity of the hoisting equipment. …
Using the traditional cutting blasting technology in vertical shaft construction has some features, e.g. slows driving speed, gangue with large volume and throwing high.
It is reported that although the construction quantity of shaft sinking only accounts for less than 7% of the entire of the coal mine, the fraction of construction time of shaft sinking reaches up ...
Y.R. Rao, General Manager (Retd.) Mine shaft design and construction planning division CMPDIL HQ, Coal India Limited. The "DEEP SHAFT COAL MINE" consists of essentially two vertical shafts, one to hoist …
Shafts Shafts are vertical or inclined accesses that serve to carry out through them all auxiliary operations in a tunnel construction (Fig. 1): digging, ventilation, pumping, salvage material extraction, vertical …
Shafts built in the first stage of the drainage system, in soft clay soils of the transition zone and under the lake area of Mexico City, were made with the Mexican technique (Solum), with the French technique (Soletanche), …
With the increasing depletion of shallow coal resources,China's coal mining is developing in the direc-tion of deepening and large-scale development.The annual production capacity of newly built and expanded large vertical shafts has reached 10 million tons,and the maximum mining depth has reached 1 500 m.The high stress and "anisotropy"(including …
This article describes the main stages involved in the construction of the vertical shafts (large-diameter vertical wells), which are necessary for the subsequent construction of the tunnel´s sections. ... 5:63–68 DOI 10.1007/s11440-010-0115-2 RESEARCH PAPER Construction of deep tunnel shafts in Mexico city soft clays by the flotation method ...
Australasian Conference on Robotics and Automation (ACRA), December 2-4, 2009, Sydney, Australia An Inspection and Surveying System For Vertical Shafts Jared LeCras1, Jonathan Paxman1, Brad Saracik1, Andrew Jarosz2 1 Curtin University of Technology Department of Mechanical Engineering Bentley, Western Australia 2 …
(6 m) diameter vertical shafts, which will be sunk to a depth of 361 ft (110 m) at Debswana's Morupule colliery. The scope of work includes the project management of the commissioning, manufacture, supply, and installation of two 1 MW fans in the upcast shaft and is expected to be completed
Using the traditional cutting blasting technology in vertical shaft construction has some features, e.g. slows driving speed, gangue with large volume and throwing high.
Hanging Shaft Development. When the foot wall and flank of the deposit do not meet the construction conditions, or their engineering geological conditions are not suitable for arranging the shaft, or the dip angle of the deposit is approximately vertical or horizontal, or hanging wall shaft arrangement can reduce the distance from the …
Shaft stability evaluation (SSE) is one of the most crucial and important tasks in view of the role of vertical shaft in mining engineering, the accuracy of which …
