This essay discusses ground support that has been employed in underground mines in order to ascertain the security and protection of the personnel as well as the equipment working there as well as to fulfill the desired engineering purpose of the aperture. The rockmass around an aperture may be considerably fragmented and fractured as a result of the combination of stresses, discontinuities and also, because of the blasting activities for the production or development purposes. Also, pieces of rock, that may range from a few grams to many tones in mass, may fall or slough into the openings of the mine as a result of gravity. Moreover, rock can be violently dumped into the mine openings because of the seismic bursting. The support methods have been developed in order to avoid the falling or ejection of the rock into the mine openings. Screen mesh, resin or mechanical rock bolts, and plain or reinforced shotcrete have been found to be the indispensable features of the production cycle of mining in Canada for year and have improved in the safety of the operator and the equipment along with enhancing the recovery of the minerals. Beginning from the late 1980's, Urylon Plastics Inc. (previously Guelph, Ontario) and in the present times, Mine guard Canada , in association with the Department of Mining Engineering at Queen's University and the MIROC - Mining Industry Research Organization of Canada created an innovative and new rock support system that is known as MIROC MineguardTM. MIROC Mineguard comprises of a thin, durable and highly flexible 2-component polyurethane spray-on liner. The RockguardTM is another polyurethane/polyurea hybrid liner, which has been developed by Futura Coatings Incorporation in Missouri, USA, has become available recently. MineguardTM and Rockguard™ are considered as the best forms of spray-on liners and both of them will referred as polymer liner support in this study. The other spray-on products under testing and development are Master Builder’s epoxy-based product and Fosroc’s latex-based Tekflex product. All systems have been demonstrated not only in the laboratory but also in the underground so that they may work in a various ways. The technical aspects and properties of every support system have been documented well in the literature. Each support system has some technical constraints and benefits, but they will not be included in detail in this study. Although being technically sound with respect to engineering concepts, however, it is also vital to take in to account that whether it is also cost effective or not, and that how each method
The research states that shotcrete is considerably more productive however it also is significantly more expensive and needs substantial amount of material handling. The material costs of spray-on liners are very much higher however they result in considerable increased productivity…
All aircraft that fly on United States airspace must be maintained and are airworthy. Our business proposal will guarantee the needs of all the aviation communities are realized. We will start small by contracting with the United States Military. Our goal is to provide equipment that is safe and user-friendly to the growing demand of an unmanned aerial vehicle.
How Information Systems Able To Support and Improve Transportation Systems Before, During and After the Olympic Games in London This Summer [Name of Student] [Name of Institution] 2529 Words [Date] Introduction Like many cities in the world, London faces serious traffic issues making it a city not known to be easy to move around.
The hotel has opened a new branch at the south coast. It requires a system that allows the CEO to easily access and monitor the activities taking place in the three hotels at the same time. The current information system of the organization does not effectively support the decision-making processes of the company.
It also highlights the development life cycle and design phases in MSS. The paper describes several options available for an organization that has a need for an MSS. The main areas of interests in this paper are the analysis of the developmental stages and outcomes of using this system in the major organizations.
Enterprise systems can actually be included in both categories because they encompass both several functions and types f support.
Some f the earliest applications for supporting management decision making were management information systems (MIS). MIS primarily provide information on the firm's performance to help mangers in monitoring and controlling the business.
It was the beginning of the winters and the relief measures were not over. It was feared that the winters would cause severe human causalities in absence of proper shelter and clothing for the displaced people (Oxfam New Zealand, n.d)
Luckily, mild winters, combined efforts of the Pakistani authorities, aid agencies and the donors averted any major damages to the human lives.
Typically, they are part of one or more commercial sectors competing for supplies, resources, markets and customers in an international context. As a result, it is important that managers are aware of such like based organisations, their
With the emergence of the computer technology the corporate business people are trying to make the overall corporate working and operational environment better. The main intention behind the development and implementation of the modern and up-to-date techniques of