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Optimization of the Trunsition from One Mining Area to the Next Engineering for Mining in Section Surface Coal Mine |
SONG Ziling1, WANG Zhaodong1,2, FAN Junfu1 |
1. College of Mining in Liaoning Technology University, Funxin 123000, Liaoning Province, China;2. China Coal Technology and Engineering Group, Beijing 100190, China |
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Abstract: The open pit with coal seams in several approximately horizontal mining sections is mined in sequence. When the mining of the previous section is about to end and that of the next section is about to start, the striping and the coal mining engineering must be optimized, in order to have a smooth mining transition. As an example, consider the mine engineering for transferring from one mining area to the next in Pingshuo Anjialing surface coal mine. The so-called L form project, the fanlike project and the dig ditch project are proposed. The three projects are compared with respect to the production stripping ratio, the time taken for transferring from one mine area to the next, the mine and overburden transportation distances and the economic benefit by adopting the projects. Based on the comparison, the L form project is adopted. For the determination of the next mining engineering location, we put forward a two section V-P curve connecting scheme, analyzing the production stripping ratio and the mining transition time, to finally establish the mining transition scheme. The annual stripping and mining coal engineering load of the two sections is optimized.
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Received: 26 November 2012
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