石门揭煤抽采方案优化及增透消突技术实践
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摘要
矿井揭煤区域单纯的以2倍有效抽采影响半径的终孔间距来布置抽采钻孔,导致抽采钻孔工程量大、施工时间长。笔者依据抽采钻孔有效影响半径,以2倍抽采钻孔有效影响半径的垂距偏移前一个钻孔,来确定下一个钻孔的方式对钻孔布置方案进行了优化,使得抽采钻孔工程量减少了约50%。同时,为了实现安全、快速消突,当抽采管路中瓦斯体积分数下降到2. 5%时,通过液态二氧化碳致裂增透措施,安全揭煤时间缩短了33%,抽采浓度增加了3. 4倍,有效地提高了抽采效率,实现了安全、快速消突揭煤的目标。
In the area of a mine where coal is uncovered,the drainage borehole is simply arranged with the final hole spacing of 2 times the effective drainage influence radius,which leads to a large amount of engineering work and a long construction time. According to the effective influence radius of the extraction borehole,the arrangement plan of the borehole was optimized by using the method of determining the next one before the offset of the vertical distance of the effective influence radius of the extraction borehole,which reduced the amount of the extraction borehole by about 50%. At the same time,in order to realize the safety and rapid elimination of outburst,when the gas volume fraction in the extraction pipeline drops to 2. 5%,the safe coal stripping time is shortened by 33% and the extraction concentration is increased by3. 4 times through the anti-reflection measures of liquid carbon dioxide cracking,which effectively improves the extraction efficiency and achieves the goal of safe and rapid elimination and removal of outburst coal.
In the area of a mine where coal is uncovered,the drainage borehole is simply arranged with the final hole spacing of 2 times the effective drainage influence radius,which leads to a large amount of engineering work and a long construction time. According to the effective influence radius of the extraction borehole,the arrangement plan of the borehole was optimized by using the method of determining the next one before the offset of the vertical distance of the effective influence radius of the extraction borehole,which reduced the amount of the extraction borehole by about 50%. At the same time,in order to realize the safety and rapid elimination of outburst,when the gas volume fraction in the extraction pipeline drops to 2. 5%,the safe coal stripping time is shortened by 33% and the extraction concentration is increased by3. 4 times through the anti-reflection measures of liquid carbon dioxide cracking,which effectively improves the extraction efficiency and achieves the goal of safe and rapid elimination and removal of outburst coal.
引文
[1]俞启香.矿井瓦斯防治[M].徐州:中国矿业大学出版社,1992.
[2]于不凡,王佑安.煤矿瓦斯灾害防治及利用技术手册[M].北京:煤炭工业出版社,2002.
[3]李波,王凯,魏建平,等.2001—2012年我国煤与瓦斯突出事故基本特征及发生规律研究[J].安全与环境学报,2013,13(3):274-278.
[4]侯殿坤,于首行,许振良.煤与瓦斯突出力学模拟研究[J].煤炭技术,2015,34(8):120-122.
[5]李祥春,聂百胜,何学秋.震动诱发煤与瓦斯突出机理[J].北京科技大学学报,2011,33(2):149-152.
[6]杨威,林柏泉,吴海进,等.“强弱强”结构石门揭煤消突机理研究[J].中国矿业大学学报,2011,40(4):517-522.
[7]吴爱军,蒋承林.挑顶法石门揭煤过程中顶板突变失稳分析[J].采矿与安全工程学报,2011,28(2):304-309.
[8]卢义玉,葛兆龙等.脉冲射流割缝技术在石门揭煤中的应用研究[J].中国矿业大学学报,2010,39(1):55-58.
[9]蔡寒宇,魏国营,辛新平.石门短导硐快速揭煤防突技术研究及应用[J].河南理工大学学报(自然科学版),2007,26(5):489-492.
[10]刘明举,孔留安,郝富昌,等.水力冲孔技术在严重突出煤层中的应用[J].煤炭学报,2005,30(4):451-454.
[11]邹德龙,王岩,刘东,等.液态二氧化碳致裂增透技术在下沟煤矿的应用[J].现代矿业,2017(1):206-207.
[12]许石青,孙威,王明仲,等.二氧化碳致裂技术在金佳煤矿212运输石门揭煤过程中的应用[J].矿业安全与环保,2018,45(6):57-60.
[13]霍中刚.二氧化碳致裂器深孔致裂爆破煤层增透新技术[J].煤炭科学技术,2015,43(2):80-83.
[14]王惠明.CO2预裂增透瓦斯抽采技术的应用———以宏远煤业150103运输顺槽掘进工作面为例[J].技术与市场,2014,21(12):53-55.
[2]于不凡,王佑安.煤矿瓦斯灾害防治及利用技术手册[M].北京:煤炭工业出版社,2002.
[3]李波,王凯,魏建平,等.2001—2012年我国煤与瓦斯突出事故基本特征及发生规律研究[J].安全与环境学报,2013,13(3):274-278.
[4]侯殿坤,于首行,许振良.煤与瓦斯突出力学模拟研究[J].煤炭技术,2015,34(8):120-122.
[5]李祥春,聂百胜,何学秋.震动诱发煤与瓦斯突出机理[J].北京科技大学学报,2011,33(2):149-152.
[6]杨威,林柏泉,吴海进,等.“强弱强”结构石门揭煤消突机理研究[J].中国矿业大学学报,2011,40(4):517-522.
[7]吴爱军,蒋承林.挑顶法石门揭煤过程中顶板突变失稳分析[J].采矿与安全工程学报,2011,28(2):304-309.
[8]卢义玉,葛兆龙等.脉冲射流割缝技术在石门揭煤中的应用研究[J].中国矿业大学学报,2010,39(1):55-58.
[9]蔡寒宇,魏国营,辛新平.石门短导硐快速揭煤防突技术研究及应用[J].河南理工大学学报(自然科学版),2007,26(5):489-492.
[10]刘明举,孔留安,郝富昌,等.水力冲孔技术在严重突出煤层中的应用[J].煤炭学报,2005,30(4):451-454.
[11]邹德龙,王岩,刘东,等.液态二氧化碳致裂增透技术在下沟煤矿的应用[J].现代矿业,2017(1):206-207.
[12]许石青,孙威,王明仲,等.二氧化碳致裂技术在金佳煤矿212运输石门揭煤过程中的应用[J].矿业安全与环保,2018,45(6):57-60.
[13]霍中刚.二氧化碳致裂器深孔致裂爆破煤层增透新技术[J].煤炭科学技术,2015,43(2):80-83.
[14]王惠明.CO2预裂增透瓦斯抽采技术的应用———以宏远煤业150103运输顺槽掘进工作面为例[J].技术与市场,2014,21(12):53-55.