| 高瓦斯综放面预先爆破弱化坚硬顶煤试验 |
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| 引用本文： | 索永录,孙书亮,段王拴,刘建平. 高瓦斯综放面预先爆破弱化坚硬顶煤试验[J]. 煤炭科学技术, 2009, 37(3) |
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| 作者姓名： | 索永录 孙书亮 段王拴 刘建平 |
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| 作者单位： | 索永录,刘建平,SUO Yong-lu,LIU Jian-ping(西安科技大学能源学院,陕西西安,710054);孙书亮,SUN Shu-liang(中煤西安工程设计有限责任公司,陕西西安,710054);段王拴,DUAN Wang-shuan(陕西煤业化工集团公司,彬长煤业有限公司,陕西成阳) |
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| 摘 要： | 为了提高综放开采的资源回收率,大佛寺煤矿40301综放工作面进行了顶煤预先爆破弱化试验.基于该矿瓦斯富聚区坚硬特厚煤层特殊条件,在分析综放工作面坚硬顶煤预先爆破的弱化作用机理基础上,研究了高瓦斯综放面坚硬顶煤预先爆破弱化工艺巷的布置方式和爆破工艺参数,提出了现场试验方案.试验研究表明,工作面倾斜方向工艺巷通风状况良好,顶煤发生破坏和破断位置前移,顶煤垮落角有明显增加,顶煤垮落块度明显减小,放煤速度加快,工作面矿压显现有所减缓,同时煤层中的瓦斯也能提前得到一定释放.工艺巷沿倾斜布置的顶煤预先爆破弱化方式是提高高瓦斯坚硬特厚煤层综放工作面回采率的有效方法.
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| 关 键 词： | 综采放顶煤 瓦斯富聚区 坚硬顶煤 爆破弱化 |
Test on Hard Top Coal Pre-Blasting and Weakening for High Gassy Fully Mechanized Top Coal Caving Mining Face |
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| SUO Yong-lu,SUN Shu-liang,DUAN Wang-shuan,LIU Jian-ping. Test on Hard Top Coal Pre-Blasting and Weakening for High Gassy Fully Mechanized Top Coal Caving Mining Face[J]. Coal Science and Technology, 2009, 37(3) |
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| Authors: | SUO Yong-lu SUN Shu-liang DUAN Wang-shuan LIU Jian-ping |
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| Affiliation: | 1.School of Energy;Xi'an University of Science and Technology;Xi'an 710054;China;2.Sino-Coal Xi'an Engineering and Design Company Ltd.;3.Binchang Coal Mining Company Ltd.;Shaanxi Coal mining and Chemistry Group Corporation;Xianyang 710054;China |
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| Abstract: | In order to improve the coal resource recovery rate of the fully mechanized top coal caving mining,a top coal pre-blasting and weakening test was conducted in No.40301 Fully Mechanized Top Coal Caving Mining Face of Dafosi Mine.Based on the special conditions of the hard and ultra thick seam in the gas rich accumulated area of the mine and base on the analysis on the hard top coal pre-blasting and weakening mechanism of the fully mechanized top coal caving mining face,the paper studied the gateway layout an... |
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| Keywords: | fully mechanized top coal caving mining gas rich accumulated area hard top coal blasting and weakening |
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