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Underground mining, Coal Prep Plant, and Strip Mining - Essay Example

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Underground mining, Coal Prep Plant, and Strip Mining

However, there are commons methods and techniques used to access underground. Accessing underground is done through declines, shafts, and adits (Hustrulid 318). Spiral tunnels that circle the deposit flanks or those that are sunk around the deposit being mines are referred to as the declines. These tunnels are sunk from the surface to allow access the underground. Declines can also be sunk where an open cut mine already exists, and the tunnels are made on the wall of the already open mine. Vertical excavations that are sunk close or adjacent to mineral deposits are referred to as the shafts. In most cases, they are sunk for both access to underground and shaft haulage purposes. On the other hand, adits refer to horizontal or near horizontal excavations made on hills or mountains (Hustrulid 403). Use of ramps is also common when it comes to accessing underground. Seams that are mined must be consistent with the set regulatory provisions enforced by mining regulating agencies. The miner also assesses the mine and the deposit available for mining. The thickness of the seams must be significantly adequate to initiate the mining project. This means that the deposits being mined must be in a position to compensate all the mining costs and earn relevant profits for the mining firm. The properties of the deposits contained in the seams must at least meet the minimum requirement of the mining entity in terms of their composition and value. Different machines and equipment are used for underground mining. The equipment to be used is determined by the method of mining to be used and the form of underground access to be employed. Drills, excavators, and mining shovels are just but some of the equipment used for underground access. Trucks are also used for transport purposes whens soil dug from underground have to be moved. Cranes and lifts are used for different purposes, ranging from lifting machinery and mine workers during the mining process. Conveyor belts are also used to move different materials to different locations, especially the mined minerals. Most importantly, tunnel boring machines are used for the purpose of sinking shafts or declines, and belt systems are fitted underground to facilitate different aspects of the mining process. Equipment used for underground mining can vary from one mine to another depending on the mineral being mined. Ventilating super sections requires an assessment of ground stability before the ventilation is undertaken. Hard and soft ground and underground surfaces are determined, and the right position of super section ventilation determined. Once this is complete, the plan is implemented bit by bit, while assessing the impact of the process on the mining site. This assessment relates to safety and position of the deposit to be mined. Machinery and equipment are then put in place and the ventilation is made, taking into account all risk factors in super section ventilation. Coal removed by miners is transported to the washing plant in various ways. This depends on whether the washing plant is installed on the surface or underground. Mined coal reaches the washing plant through conveyor belts or through track transportation. Deposits from continuous miners are collected and loaded on conveyor belts or on tracks that transport them to the washing plant. However, use of tracks is only employed under instances where the process is economical. Shaft haulage and belt systems are also used where the mined coal has to be taken from the mining point to a washing plant located on the surface (Hustrulid 551). The visit to the mine was informative and educative in terms of underground mining and preparation of plants to facilitate the process. The mining process encompasses ...Show more


Mining Excavation of hard and soft minerals from underground is achieved through underground mining. Underground mining is undertaken differently in different regions depending on the specific mineral that is being mined. …
Author : tyrique44
Underground mining, Coal Prep Plant, and Strip Mining
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