| 高韧性特厚煤层综放开采顶煤弱化处理研究 |
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| 引用本文： | 刘全明,刘忠明,徐刚,王金平.高韧性特厚煤层综放开采顶煤弱化处理研究[J].煤矿开采,2005,10(1):47-49. |
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| 作者姓名： | 刘全明 刘忠明 徐刚 王金平 |
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| 作者单位： | 天地科技股份有限公司,开采所事业部,北京,100013;宁夏煤业集团,磁窑堡二矿,宁夏,灵武,751409 |
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| 摘 要： | 灵武矿区2号煤层,硬度系数小,但韧性高,煤层厚度大,在开采过程中表现为顶煤悬顶面积大,冒落滞后,冒落块度大。结合磁窑堡二矿综放试验,研究了提高高韧性特厚煤层顶煤松动爆破技术参数,成功地实现了高韧性特厚煤层的综放开采。
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| 关 键 词： | 高韧性 特厚煤层 综放开采 顶煤弱化 |
| 文章编号： | 1006-6225(2005)01-0047-03 |
| 修稿时间： | 2004年8月28日 |
Study on the weakening of top-coal in high toughness and extra-thick seam adopted longwall with top-coal caving mining |
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| LIU Quan-ming,LIU Zhong-ming,XU Gang,WANG Jin-ping.Study on the weakening of top-coal in high toughness and extra-thick seam adopted longwall with top-coal caving mining[J].Coal Mining Technology,2005,10(1):47-49. |
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| Authors: | LIU Quan-ming LIU Zhong-ming XU Gang WANG Jin-ping |
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| Affiliation: | LIU Quan-ming~1,LIU Zhong-ming~2,XU Gang~1,WANG Jin-ping~2, |
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| Abstract: | The coefficient of hardness is small in seam 2~# of Lingwu Coal Mining Area, while its toughness is high and the thickness is great which presents a great area of non-flapped top-coal and a late roof-fall with large fallen block. The paper studies on the technical parameters in detail to raise the recovery ratio of top-coal in high toughness and extra-thick seam adopted longwall with top-coal caving mining, combined with field test in Ciyaopu mine No.2.The mining practice is proved to be successful. |
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| Keywords: | High toughness Extra-thick seam Longwall with top-coal caving Weakening of top-coal |
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