毕业论文-平朔东露天矿20Mta设计.doc

本科生毕业设计
题目： 平朔东露天矿20Mt/a设计
采煤破碎站设置水平及移设步距的确定
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二〇一一年六月
摘 要
设计的一般部分为平朔东露天矿20 Mt设计，采煤采用间断工艺，剥离为综合工艺。设计确定的采场最终帮坡角为35°，排土场边坡角为20°。 km2， Mt， m3/t， a。平朔东露天划分为4个采区，首采区位于平朔东露天矿中部，从北部拉沟，向南推进。 a。东露天矿正常生产时期，采用工作帮移动坑线和端帮半固定坑线相结合的开拓方案。共设有两个排土场， km2， Mm3。 km2, Mm3。
设计还包括设备选型，开采参数，运输，投资、总平面布置等内容。
专题部分研究了采煤破碎站设置的合理水平为剥离半连续工艺最低水平，移设步距为250 m/a。
翻译部分翻译了一篇国外关于露天矿可呼吸性粉尘评价的论文《Assessment of respirable dust exposures in an opencast coal mine》。
关键词：剥离半连续工艺 ；半固定破碎站 ；设置位置 ；移设步距
ABSTRACT
The general part of the design was the PINGSHUO East open pit (20Mt )design, using intermittent mining process, stripping integrated process. Stope design to help determine the final slope angle of 35 °, dump slope angle of 20 °. Delineation of the border area of ​​ km2, geological reserves of Mt, the average coal stripping ratio m3 / t, the service life of a. PINGSHUO East is divided into four open-air mining area, the first open pit mining area is located in the east central PINGSHUO, pulled from the north ditch, southward advance. Service life of the first mining area a. East open pit normal production period, the use of work to help move the pit line and the end line to help semi-fixed combination of pit development plan. Two dump was designed, which was called North Dump and East North Dump which covers an area of North Dump km2 had the capacity of Mm3. The East dump which covers area of km2 had a capacity of Mm3.
The design also includes equipment selection, parameter extraction, transportation, investment, general layout and so on.
Thematic part of the study the reasonable level set for the coal crusher station stripped semi-continuous lowest level shift spacing of 250m / a.
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