| 宝积山煤业公司702工作面合理预抽参数确定 |
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| 引用本文： | 杨东,仇海生,王世栋.宝积山煤业公司702工作面合理预抽参数确定[J].辽宁工程技术大学学报(自然科学版),2007(Z2). |
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| 作者姓名： | 杨东 仇海生 王世栋 |
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| 作者单位： | 煤炭科学研究总院抚顺分院，煤炭科学研究总院抚顺分院，乌兰木伦煤矿 辽宁 沈阳，110016，辽宁 沈阳，110016，内蒙古 鄂尔多斯 017205 |
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| 摘 要： | 为了提高工作面瓦斯抽放效果、排除上隅角瓦斯超限的隐患,通过工作面预抽瓦斯试验以及建立预抽期评价模型,确定合理的预抽参数以达到最佳的抽放效果。试验表明预抽率随时间延长有整体增加的趋势,但增加的速度逐渐减小并趋于零。当钻孔间不存在抽放效应重叠时,不同间距的钻孔组有各不相同极限抽放率,孔间距越小,极限抽放率越大。合理预抽参数的确定对于提高瓦斯抽放效果,保障矿井的安全生产具有重大意义。
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| 关 键 词： | 瓦斯抽放 抽放量 衰减系数 预抽期 评价模型 |
Reasonable pre-drainage parameters' determination of Face 702 in Baojishan coal company Ltd. |
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| YANG dong QIU Hai-sheng WANG Shi-dong.Reasonable pre-drainage parameters' determination of Face 702 in Baojishan coal company Ltd.[J].Journal of Liaoning Technical University (Natural Science Edition),2007(Z2). |
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| Authors: | YANG dong QIU Hai-sheng WANG Shi-dong |
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| Institution: | YANG dong~1 QIU Hai-sheng~1 WANG Shi-dong~2 |
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| Abstract: | To improve face gas drainage effect,remove the upper comer gas gauge hidden dangers.Through test of face pre- drainage and the establishment of evaluation model of period,a reasonable Pre- drainage parameters are determined to maximize drainage effect.Experiments show that the rate of pre-drainage has an increase tendency,but the rate of increase gradually decreases to zero.When drilling will not have overlapping effects of drainage,different spacing of the drilling group,not the same limit drainage rate,the smaller the pore space,the greater the rate of drainage limits.Reasonable pre-drainage parameters of the effect of raising gas drainage, protection of the mine safe production is of great significance. |
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| Keywords: | gas drainage drainage rate attenuation coefficient pre-drainage period the evaluation model |
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