Research and Application of Fully Mechanized Top Coal Caving Technology
In response to the problem of low top coal extraction rate in top coal caving mining,this paper analyzes the influencing factors and mechanisms of top coal extraction rate.Based on the actual geological conditions of a certain mine,an experimental model is constructed to study the top coal extraction rate under different element combinations.The optimal mining ratio of 1:1,reasonable coal extraction step spacing and sequential coal extraction method are determined.The actual implementation effect of top coal caving mining technology shows that the top coal extraction rate reaches 91.4%,fully meeting the mining needs.
top coal cavingextraction rateharvesting ratiocoal release step distance
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