| 基于瓦斯峰谷比值法的炮掘工作面 突出危险性预测 |
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| 引用本文： | 李希建,周炜光.基于瓦斯峰谷比值法的炮掘工作面 突出危险性预测[J].煤炭学报,2012,37(Z1):104-108. |
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| 作者姓名： | 李希建 周炜光 |
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| 作者单位： | 1.中国矿业大学 安全工程学院，江苏 徐州 221116；;
2.贵州大学 矿业学院，贵州 贵阳 550025 |
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| 基金项目： | 教育部春晖计划资助项目(Z2007-1-52010);贵州省科技厅国际合作资助项目(黔科合外G字(2009)700111号);贵州省科技厅工业攻关资助项目(黔科合GY字(2011)3012号) |
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| 摘 要： | 根据青龙矿井煤巷爆破掘进工作面的放炮前后瓦斯浓度变化规律，提出用瓦斯峰谷比值法作为预测预报煤巷炮掘工作面煤与瓦斯突出危险性的方法。实测数据表明：即使在同一掘进巷道，随着地点不同和措施不同，炮后瓦斯浓度最大值也不同，变化较大；在同一掘进巷道，炮前瓦斯浓度平均日最小值尽管随着地点不同和措施不同而变化，但变化较小。虽然此方法的突出临界指标的普遍适应性较差，但容易实现实时预测。
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| 关 键 词： | 煤与瓦斯突出 瓦斯峰谷比值法 预测预报 炮掘工作面 |
| 收稿时间： | 2011-11-23 |
The risk forecast of coal and gas outburst on blasting-workingface by the method of gas peak-to-valley ratio |
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| LI Xi-jian,ZHOU Wei-guang.The risk forecast of coal and gas outburst on blasting-workingface by the method of gas peak-to-valley ratio[J].Journal of China Coal Society,2012,37(Z1):104-108. |
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| Authors: | LI Xi-jian ZHOU Wei-guang |
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| Affiliation: | 1.School of Safety Engineering,China University of Mining & Technology,Xuzhou 221116,China;2.School of Mining,Guizhou University,Guiyang 550025,China;3.Guizhou Qianxi Energy Development Company Limited,Bijie 551507,China) |
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| Abstract: | Based on the variable rules of gas concentration before and after blasting at working-face in coal roadway of Qinglong Mine,this paper put forward a method of peak-to-valley ratio of gas as a way to forecast and predict gas and coal outburst on the working-face.Measured data show that even if in the same working roadway,with the difference of sites and measures,the maximum numeric values after blasting are different and they change relatively clear.And,the average minimum numeric values per day before blasting change with sites and measures,but they change little.Though its general adaptability of critical index mark of outburst is worse,but it is easy to realize real-time forecast and predict. |
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| Keywords: | coal and gas outburst gas peak-to-valley ratio forecast and prediction blasting-driving-face |
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