基于放顶煤工作面煤炭回采率的计算只是简单地以原煤产量除以可采的地质储量,得到的工作面回采率值通常偏高,缺乏科学性、准确性和客观性。在神东柳塔煤矿08综放工作面计算回采率时,采用以纯煤产量值计算工作面回采率的方法,即在原煤产量中扣除混入在煤炭中的矸石量和外在水分作为真实产量,每天再对顶煤厚度的钻探数据计算工作面应采的煤炭地质储量,两者之比即为该综放工作面的准确回采率。建议将该计算步骤和方法用于今后综放工作面回采率的计算。

The calculation of the coal mining recovery ratio of the top coal caving mining face was simply based on the raw coal production divided by the mineable geological reserves.The obtained coal mining recovery ratio of the coal mining face usually would be too high and would lack scientificalness, accuracy and objectivity. During the calculation of the coal mining ratio for No.08 fully mechanized top coal caving mining face in Shendong Liuta Mine, a net coal production value method was a pplied to calculate the coal mining recovery ratio of the coal mining and that the real coal production value would be the raw coal production minus the rejects in the coa I and the surface moisture.Then the daily drilling and exploration data of the top coal thickness was applied to calculate the coal geological reserves required for the co al mining face and the comparison between the two would be the accurate mining ratio of the fully mechanized top caving mining face.The calculation procedure and m ethods was proposed to be the basis for the mining recovery ratio of the fully mechanized top coal acing mining face in the near future.

“十一五”国家科技攻关支撑资助项目(2006BAK03B04)；