| 钻孔瓦斯动态涌出的数值模拟研究 |
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| 引用本文： | 王凯,俞启香,蒋承林.钻孔瓦斯动态涌出的数值模拟研究[J].煤炭学报,2001,26(3):279-284. |
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| 作者姓名： | 王凯 俞启香 蒋承林 |
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| 作者单位： | 中国矿业大学能源科学与工程学院, |
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| 基金项目： | 国家自然科学基金项目 !(192 3 2 0 41) |
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| 摘 要： | 基于钻孔过程中瓦斯动态涌出的基本特点，建立了钻孔瓦斯动态涌出量的理论计算模型。通过系统的数值计算，分析了钻孔瓦斯动态涌出的规律和特征，在此基础上，提出了关于煤层突出危险性的定性判据，并给出了确定打钻过程中每米钻孔瓦斯涌出初速度及停钻衰减涌出量的计算公式。定性判据与定量指标相结合，将有助于提高钻孔法预测突出的准确率。
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| 关 键 词： | 钻孔过程 瓦斯动态涌出 数值模拟 危险性预测 瓦斯突出 |
| 文章编号： | 0253-9993(2001)03-0279-06 |
| 修稿时间： | 2000年7月6日 |
Study of dynamic gas emission during boring process by using numerical simulation |
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| WANG Kai,YU Qi xiang,JIANG Cheng lin.Study of dynamic gas emission during boring process by using numerical simulation[J].Journal of China Coal Society,2001,26(3):279-284. |
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| Authors: | WANG Kai YU Qi xiang JIANG Cheng lin |
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| Abstract: | Based on the basic features of dynamic gas emission during boring process, a theoretical model for calculating the dynamic volume of gas emission from bore hole is set up. Then through systematically numerical simulation, the rules and characteristics of dynamic gas emission during boring process are analyzed, and the qualitative criteria for determination of outburst danger are put forward. Meanwhile, the equations are given for calculating the initial velocity and the decline volume of gas emission from per meter hole. Combined qualitative criteria with quantitative indices, the accuracy of outburst prediction by boring method will be favorably increased. |
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| Keywords: | boring process dynamic gas emission numerical simulation outburst prediction |
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