特厚煤层大采高综放合理放煤步距研究

现代矿业 ›› 2013, Vol. 29 ›› Issue (05): 14-16.

特厚煤层大采高综放合理放煤步距研究

仲涛^1,2，刘易³，李中杰⁴

1.中国矿业大学矿业工程学院；2.山东省兖矿集团南屯煤矿；3.山东裕隆矿业集团有限公司义能煤矿；4.山东能源淄矿集团有限责任公司许厂煤矿

出版日期:2013-05-15 发布日期:2013-06-13

Study on Reasonable Drawing Interval of Fully Mechanized Top Coal Cavingof Large Mining Height of Very Thick Coal Seam

Zhong Tao^1,2，Liu Yi³，Li Zhongjie⁴

1.School of Mines of China University of Mining and Technology；2.Nantun Coal Mine of Yankuang Group of Shandong Province；3.Yineng Coal Mine of Shandong Yulong Mining Group Co.,Ltd.；4.Xuchang Coal Mine of Shandong Energy Zibo Mining Group Co.,Ltd.

Online:2013-05-15 Published:2013-06-13

摘要/Abstract

摘要： 通过PFC2D数值模拟软件，模拟分析顶煤流动状态及损失情况，并根据顶煤回收率和含矸率的相对应关系，确定合理的放煤步距，研究发现，在顶煤厚度为14，16，18 m情况下，采高为4.5 m，合理放煤步距分别为1.6，1.6，3.2 m，顶煤回收率分别达到85.2%、83.6%、83.4%，含矸率也在允许范围内，随着顶煤厚度的增加，放煤步距应合理增大，以提高顶煤回收率。

关键词: 特厚煤层, 大采高综放开采, PFC数值模拟, 放煤步距

Abstract: Through PFC2D numerical simulation software, movement and loss situation of top-coal were simulated and analyzed, and according to corresponding relations of recovery rate of top-coal and percentage of refuse content to confirm reasonable drawing interval, the study indicated, under the condition of thickness of top coal were 14，16，18 m and mining height was 4.5 m, reasonable drawing interval were 1.6，1.6，3.2 m, recovery rate of top coal reached to 85.2%、83.6%、83.4% separately, percentage of refuse content also in allowed band, with the increase of thickness of top coal, drawing interval should reasonable increased to raise recovery rate of top coal.

Key words: Very thick coal seam, Fully mechanized top coal caving mining of large mining height, PFC numerical simulation, Drawing interval

仲涛, 刘易, 李中杰. 特厚煤层大采高综放合理放煤步距研究[J]. 现代矿业, 2013, 29(05): 14-16.

ZHONG Tao, LIU Yi, LI Zhong-Jie. Study on Reasonable Drawing Interval of Fully Mechanized Top Coal Cavingof Large Mining Height of Very Thick Coal Seam[J]. Modern Mining, 2013, 29(05): 14-16.

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