| 定点定长度新型封孔工艺及工业性试验研究 |
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| 引用本文： | 王圣程,周福宝,刘应科.定点定长度新型封孔工艺及工业性试验研究[J].中国煤炭,2012,38(3):84-86. |
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| 作者姓名： | 王圣程 周福宝 刘应科 |
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| 作者单位： | 中国矿业大学安全工程学院,江苏省徐州市,221116 |
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| 基金项目： | 国家自然科学基金项目(51174199);中央高校基本业务费资助(2010JQPB03、2011JQP08);江苏省“333”工程培养基金资助(BRA2010134) |
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| 摘 要： | 针对现有封孔技术因封孔深度和封孔段长度相同,造成不能有效避开巷道松动圈、浪费封孔材料等现象的问题,在分析钻孔裂隙带形成的基础上,提出了封孔深度为8m、封孔段长度为3m的定点定长度新型封孔工艺。并在贵州山脚树矿进行了工业性试验,结果表明:定点定长度新型封孔工艺有效减少了钻孔漏气量,封孔成本降低40%,平均瓦斯抽采浓度提高了17.2%,单孔多抽出瓦斯911.9m3/min。
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| 关 键 词： | 瓦斯抽采 裂隙带 定点定长度封孔工艺 |
Industrial test of new sealing method with fixed site and length |
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| Wang Shengcheng
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Zhou Fubao
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Liu Yingke.Industrial test of new sealing method with fixed site and length[J].China Coal,2012,38(3):84-86. |
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| Authors: | Wang Shengcheng Zhou Fubao Liu Yingke |
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| Affiliation: | (Faculty of Safety Engineering,China University of Mining and Technology,Xuzhou,Jiangsu 221116,China) |
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| Abstract: | The existing sealing technology cannot effectively keep away from the roadway loose circle so as to cause the waste of sealing materials,due to the same size of sealing depth and length.Based on the analysis of formation of borehole fissure zone,the new sealing method was proposed to solve this problem,with the sealing depth of 8m and the length of 3m.An industrial test was carried out in Shanjiaoshu mine in Guizhou province by using this technology.The results showed that the new sealing technology could effectively reduce the air leakage amount during drilling.The sealing cost was reduced by 40%,the average concentration of gas drainage was improved by 17.2%,and more gas about 911.9 m3 per minute was drained from one borehole in a month. |
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| Keywords: | gas drainage fissure zone fixed site and length sealing process |
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