OSTI.GOV Patent: Method of lining a vertical mine shaft with concrete. [Patent application]
The objective of this thesis is to predict lining thickness inside circular mine shafts. A numerical study with different rock mass strengths and different in-situ non-hydrostatic stresses are carried out in 2D shaft section models to predict pressures that develop on lining support.
mine. Both shafts concrete linings through this stratum have suffered considerable pressure, which has caused gradual failure of the shaft lining. So far, both shaft linings through the Marl stratum have been restored twice after sunk in 1970s and a further third relining is now required and
lining of mine shaft and jigging. An experimental evaluation of the weathering effects on,, 1 An experimental evaluation of the weathering effects on mine shaft lining materials W Yang *1,2, AM Marshall2, D Wanatowski3 and L R Stace2 Abstract The collapse of historic mine shafts is a major public safety risk in the UKNumerical simulation on shaft lining stresses analysis of,, Numerical ...
of liningof mine shaft and declineand safe location of the shaft. In order to perform such tasks, borehole rock samples have been tested to estimate the engineering
29-08-2010· Shaft Design. 1. Introduction. Chapter 9 is mainly devoted to the design of vertical shafts; in particular, circular concrete-lined shafts because they are most commonly considered for new mines. For a production shaft, design starts with determining the cross section or plan view of the shaft. The production shaft …
01-01-2019· The mine shaft sinking operation will often be varied by the geological conditions and affected by underground water inflows, seam gas outbursts, geothermal and other natural conditions. The safe construction of the mine shaft sinking will be challenged by all these conditions. Although the mine shaft engineering will only be about 5% of the ...
(2013). Numerical modelling of shaft lining stability at deep mine. Mining Technology: Vol. 122, No. 1, pp. 8-19.
The initial The shotcrete lining design conducted in this paper is shotcrete liner was sprayed at 3 m behind the face, and based on a case history reported by Rafiei Renani et al. the final concrete liner was installed at 12 m behind (2016), who back-analyzed rock mass properties at an the face after four rounds of excavation. instrumented section of a 10 m diameter shaft at a Rafiei Renani et ...
Shotcrete lining of South Deep shafts of development. The proximity of the South Shaft complex to the South Deep shafts allowed for the orebody, between 90 and 95 levels, to be pre-developed. This fact allowed for the shaft reef intersection area of the South Deep shaft complex to be pre-extracted and backfilled, thereby eliminating the
DESIGN OF INITIAL SHOTCRETE LINING FOR A MINE SHAFT USING TWO-DIMENSIONAL FINITE AND HYBRID FINITE-DISCRETE ELEMENT METHODS by Saeed Naseri Submitted in partial fulfilment of the requirements for the degree of Master of Applied Science …
mine's infrastructure. Therefore, the structural integrity of the shaft lining over its entire lifetime is required for a safe and uninterrupted mine operation. Consequently, shaft lining design and dimensioning is a matter of high interest. Several national standards, based on analytical and empirical methods, are available to the designer.
02-04-2018· lining for mine shafts and tunnels reference list for the priod of 2007-2017 mine shaft lining projects reference list, 2007-2017 customer. project. commodity. diameter, m. …
01-01-1988· complex observations and design of multilayer lining of vertical mine shafts sunk in complicated conditions Author links open overlay panel J.M. KAZIKAEV S.V. SERGEYEV V.K. ISHCHENKO Show more
FIELD: mining industry. SUBSTANCE: this is used in construction of vertical mine shafts with using cast-in-place reinforced concrete in difficult mining and geological conditions. Mine shaft lining incorporates load-bearing reinforced concrete shell, compensation shell which is divided by stiffening ribs with creation of vertical passages being filled with pliable ed material, anchor rods ...
Corpus ID: 44454625. Design of the shaft lining and shaft stations for deep polymetallic ore deposits: Victoria Mine case study @article{Fabich2015DesignOT, title={Design of the shaft lining and shaft stations for deep polymetallic ore deposits: Victoria Mine case study}, author={S. Fabich and J. and Magdalena Rajczakowska and S. Świtoń}, journal={Mining Science}, year={2015}, volume ...
Mine Shaft and Tunnel Lining DTS Equipment Ltd. DTS Group iron and steel lining for mine shafts and tunnels is successfully used in underground infrastructure projects all around the world, from Kazakhstan and Russia to Canada It is fully customizable and may be adapted to all diameters, face shapes, sealing types and ground conditions
01-01-2019· Shaft lining design of Cixi Colliery in China is completed with the mechanics-based method proposed in this study. The lining design is verified through numerical simulation and field monitoring. The simulation results show that the maximum mises stress is located at the inner edge of the shaft lining.
4.1 Shaft geology. The geology of the shaft at the potash mine considered in this. case study was divided into 4 geotechnical zones as follo ws: • Zone 1: Soils comprising loam, clay and sand ...
In this paper, the methodology of the shaft lining and shaft station lining design for a deep shaft is presented, based on the Victoria Mine case study. Victoria Mine is lo-cated approximately 32 km southwest of Sudbury, Ontario, Canada. Research com-pleted in this area shows large deposits of nickel, copper and precious metals. Copper
The apparatus includes a cylindrical retainer form spaced inwardly of the wall of the shaft by the desired thickness of the liner to be poured and having overlapping edges which seal against concrete flow but permit the form to be contracted to a smaller circumference after the liner has hardened and is self-supporting. A curb ring extends downwardly and outwardly toward the shaft wall from ...
DTS Group iron and steel lining for mine shafts and tunnels is successfully used in underground infrastructure projects all around the world, from Kazakhstan and Russia to Canada. It is fully customizable and may be adapted to all diameters, face shapes, sealing types and ground conditions. Based on nearly 80 years of experience, DTS Group is ...
vertical circular shaft and a decline are required to be developed for transporting man, material and air. It is decided that the shaft and the portal of the decline will be located in the ...
US-1006799-A chemical patent summary.
The objective of this thesis is to predict lining thickness inside circular mine shafts. A numerical study with different rock mass strengths and different in-situ non-hydrostatic stresses are carried out in 2D shaft section models to predict pressures that develop on lining support. An iterative process of applying
Mine Shaft and Tunnel Lining DTS Group iron and steel lining for mine shafts and tunnels is successfully used in underground infrastructure projects all around the world, from Kazakhstan and Russia to Canada. It is fully customizable and may be adapted to all diameters, face shapes, sealing types and ground conditions.
16-08-2020· Shaft Mining, Mining Techniques, Underground Mining. Shaft lining. Several important functions are performed by shaft lining. This lining acts as a safety layer preventing the fall of loose or unstable rocks into the shaft. It is also a place for shaft sets to be bolted into and it is a smooth surface to allow free flow of air for ventilation.