绿塘煤矿超高压水力割缝卸压增透效果考察及应用
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摘要
为有效解决绿塘煤矿低透气性突出煤层煤巷掘进区域验证指标超标、瓦斯浓度超限导致的煤巷掘进效率低的问题,采用超高压水力割缝卸压增透技术在该矿6中S204回风巷煤巷条带进行试验与应用,考察确定了6中煤层的合理割缝压力、切割半径和抽采瓦斯纯流量等参数。结果表明:超高压水力割缝技术能够有效改善煤层透气性,大幅提高瓦斯抽采效率,煤巷掘进进度由20. 0～30. 0 m/月提高到87. 5 m/月,解决了低透气性突出煤层煤巷掘进瓦斯治理难题,可为类似矿区煤巷条带的瓦斯高效治理提供经验和技术指导。
In order to effectively solve the problem of low tunneling efficiency of coal roadway in low permeability outburst coal seam in Lvtang Coal Mine,which caused by excessive regional verification index and gas exceeding the limit in tunneling area,the ultra-high pressure hydraulic slotting technology to release the pressure and enhance the permeability was tested and applied in the 6 th S204 return airway of the coal roadway,and the reasonable fracturing pressure,cutting radius,gas extraction purity and other parameters of the coal seam have been determined. The results show that the ultra-high pressure hydraulic slotting technology can effectively enhance the permeability of coal seam,greatly improve the efficiency of gas extraction,and the progress of coal roadway tunneling increases to 87. 5 m/month,which is from 20. 0 m/month to 30. 0 m/month before. It solves the difficulties of gas control in coal roadway excavation of low permeability and outburst coal seam,and provides experience and technical guidance for efficient gas governance of coal roadway in similar mining areas.
In order to effectively solve the problem of low tunneling efficiency of coal roadway in low permeability outburst coal seam in Lvtang Coal Mine,which caused by excessive regional verification index and gas exceeding the limit in tunneling area,the ultra-high pressure hydraulic slotting technology to release the pressure and enhance the permeability was tested and applied in the 6 th S204 return airway of the coal roadway,and the reasonable fracturing pressure,cutting radius,gas extraction purity and other parameters of the coal seam have been determined. The results show that the ultra-high pressure hydraulic slotting technology can effectively enhance the permeability of coal seam,greatly improve the efficiency of gas extraction,and the progress of coal roadway tunneling increases to 87. 5 m/month,which is from 20. 0 m/month to 30. 0 m/month before. It solves the difficulties of gas control in coal roadway excavation of low permeability and outburst coal seam,and provides experience and technical guidance for efficient gas governance of coal roadway in similar mining areas.
引文
[1]于不凡.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,2005.
[2]申宝宏,刘见中,雷毅.我国煤矿区煤层气开发利用技术现状及展望[J].煤炭科学技术,2015,43(2):1-4.
[3]赵阳升,杨栋,胡耀青,等.低渗透煤储层煤层气开采有效技术途径的研究[J].煤炭学报,2001(5):455-458.
[4]霍中刚.二氧化碳致裂器深孔预裂爆破煤层增透新技术[J].煤炭科学技术,2015,43(2):80-83.
[5]袁亮,林柏泉,杨威.我国煤矿水力化技术瓦斯治理研究进展及发展方向[J].煤炭科学技术,2015,43(1):45-49.
[6]徐景德,杨鑫,赖芳芳,等.国内煤矿瓦斯强化抽采增透技术的现状及发展[J].矿业安全与环保,2014,41(4):100-103.
[7]王耀锋,何学秋,王恩元,等.水力化煤层增透技术研究进展及发展趋势[J].煤炭学报,2014,39(10):1945-1955.
[8]陈洋.深孔控制预裂爆破增透试验研究[J].矿业安全与环保,2014,41(5):29-32.
[9]舒生,李秋林.深孔松动爆破技术在较难抽采煤层掘进工作面的应用[J].矿业安全与环保,2010,37(5):65-67.
[10]张建国.高压水射流割缝揭穿煤层关键参数研究[J].重庆大学学报,2011,34(11):117-121.
[11]周廷扬.高压水力割缝提高瓦斯抽采率的技术研究[J].矿业安全与环保,2010,37(增刊):7-9.
[12]刘勇,卢义玉,李晓红,等.高压脉冲水射流顶底板钻孔提高煤层瓦斯抽采率的应用研究[J].煤炭学报,2010,35(7):1115-1119.
[13]林柏泉,吕有厂,李宝玉,等.高压磨料射流割缝技术及其在防突工程中的应用[J].煤炭学报,2007,32(9):959-963.
[14]林柏泉,孟凡伟,张海宾.基于区域瓦斯治理的钻割抽一体化技术及应用[J].煤炭学报,2011,36(1):75-79.
[15]宋宜猛,王敏,王安虎,等.超高压水射流切割煤层增透试验研究[J].能源与环保,2017,39(4):44-47.
[16]刘生龙,周玉竹,邱居德,等.超高压水力割缝在坚硬突出煤层石门揭煤预抽瓦斯防突措施中的应用[J].矿业安全与环保,2017,44(5):64-67.
[2]申宝宏,刘见中,雷毅.我国煤矿区煤层气开发利用技术现状及展望[J].煤炭科学技术,2015,43(2):1-4.
[3]赵阳升,杨栋,胡耀青,等.低渗透煤储层煤层气开采有效技术途径的研究[J].煤炭学报,2001(5):455-458.
[4]霍中刚.二氧化碳致裂器深孔预裂爆破煤层增透新技术[J].煤炭科学技术,2015,43(2):80-83.
[5]袁亮,林柏泉,杨威.我国煤矿水力化技术瓦斯治理研究进展及发展方向[J].煤炭科学技术,2015,43(1):45-49.
[6]徐景德,杨鑫,赖芳芳,等.国内煤矿瓦斯强化抽采增透技术的现状及发展[J].矿业安全与环保,2014,41(4):100-103.
[7]王耀锋,何学秋,王恩元,等.水力化煤层增透技术研究进展及发展趋势[J].煤炭学报,2014,39(10):1945-1955.
[8]陈洋.深孔控制预裂爆破增透试验研究[J].矿业安全与环保,2014,41(5):29-32.
[9]舒生,李秋林.深孔松动爆破技术在较难抽采煤层掘进工作面的应用[J].矿业安全与环保,2010,37(5):65-67.
[10]张建国.高压水射流割缝揭穿煤层关键参数研究[J].重庆大学学报,2011,34(11):117-121.
[11]周廷扬.高压水力割缝提高瓦斯抽采率的技术研究[J].矿业安全与环保,2010,37(增刊):7-9.
[12]刘勇,卢义玉,李晓红,等.高压脉冲水射流顶底板钻孔提高煤层瓦斯抽采率的应用研究[J].煤炭学报,2010,35(7):1115-1119.
[13]林柏泉,吕有厂,李宝玉,等.高压磨料射流割缝技术及其在防突工程中的应用[J].煤炭学报,2007,32(9):959-963.
[14]林柏泉,孟凡伟,张海宾.基于区域瓦斯治理的钻割抽一体化技术及应用[J].煤炭学报,2011,36(1):75-79.
[15]宋宜猛,王敏,王安虎,等.超高压水射流切割煤层增透试验研究[J].能源与环保,2017,39(4):44-47.
[16]刘生龙,周玉竹,邱居德,等.超高压水力割缝在坚硬突出煤层石门揭煤预抽瓦斯防突措施中的应用[J].矿业安全与环保,2017,44(5):64-67.