顺煤层瓦斯抽放钻孔合理封孔深度研究
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摘要
为了确定寺河煤业W33011巷顺煤层抽放钻孔合理封孔深度,提高钻孔封孔质量,基于矿井地质条件,通过FLAC~(3D)数值模拟软件对巷道开挖后周围煤岩体应力分布、裂隙发育进行数值模拟,采用YFZ3型瓦斯抽放钻孔封孔质量检测仪对钻孔的封孔质量和漏气位置进行测定,进而确定试验区抽放钻孔合理封孔深度为14 m,有效改善了该区域瓦斯抽放效果。
In order to determine the reasonable sealing depth of the drainage borehole in the coal seam along lane W33011 of Sihe Coal Mine and improve sealing quality, based on the mine geological conditions, FLAC~(3D) numerical simulation software is used to simulate the stress distribution and fracture development of coal body around the roadway after the roadway excavation,and YFZ3 hole sealing quality detector is used to detect the hole sealing quality and leakage position, and determine that the reasonable drilling depth in the test area is 14 m, which effectively improves the gas drainage effect.
In order to determine the reasonable sealing depth of the drainage borehole in the coal seam along lane W33011 of Sihe Coal Mine and improve sealing quality, based on the mine geological conditions, FLAC~(3D) numerical simulation software is used to simulate the stress distribution and fracture development of coal body around the roadway after the roadway excavation,and YFZ3 hole sealing quality detector is used to detect the hole sealing quality and leakage position, and determine that the reasonable drilling depth in the test area is 14 m, which effectively improves the gas drainage effect.
引文
[1]申宏敏,毛桃良,张雷林,等.基于钻屑理论的抽采钻孔合理封孔深度研究[J].煤矿安全,2014,45(8):39.
[2]李晓,闫海丰,李见辉,等.采动巷道围岩岩裂裂隙带分布规律与封孔深度[J].煤炭与化工,2014,37(10):39-42.
[3]张凤杰.不同煤质中化学封孔材料对抽采钻孔围岩稳定性影响分析[J].煤炭技术,2017,36(8):176-179.
[4]陈建功,贺虎,张永兴.巷道围岩松动圈形成机理的动静力学解析[J].岩土工程学报,2011,33(12):64-68.
[5]王敏,王凯,侯振功.钻孔成像法在巷道围岩松动圈测试中的应用研究[J].矿业安全与环保,2012,39(4):31-33.
[6]齐黎明,赵玉岐,王轶波,等.基于封孔前瓦斯损失量的测压结果修正分析[J].煤炭学报,2007,32(1):60.
[7]杨利平,张凤杰.深部软岩巷道支护围岩结构的变化规律研究[J].煤炭技术,2014,33(6):19-22.
[8]何要泉.平煤十二矿本煤层瓦斯抽采钻孔封孔技术试验研究[D].焦作:河南理工大学,2012.
[9]何俊,董开元.大断面煤层巷道瓦斯抽采钻孔合理封孔深度研究[J].中国煤炭,2014,40(2):101-104.
[10]王维忠,刘东,许江,等.瓦斯抽采过程中钻孔位置对煤层参数演化影响的试验研究[J].煤炭学报,2016,41(2):414-423.
[11]陈建忠,代志旭.瓦斯抽采钻孔合理封孔长度确定方法[J].煤矿安全,2012,43(8):8-10.
[12]武炜,王兆丰.钻孔封孔注浆压力及封孔深度数值模拟研究[J].煤炭科学技术,2015,43(11):68-72.
[2]李晓,闫海丰,李见辉,等.采动巷道围岩岩裂裂隙带分布规律与封孔深度[J].煤炭与化工,2014,37(10):39-42.
[3]张凤杰.不同煤质中化学封孔材料对抽采钻孔围岩稳定性影响分析[J].煤炭技术,2017,36(8):176-179.
[4]陈建功,贺虎,张永兴.巷道围岩松动圈形成机理的动静力学解析[J].岩土工程学报,2011,33(12):64-68.
[5]王敏,王凯,侯振功.钻孔成像法在巷道围岩松动圈测试中的应用研究[J].矿业安全与环保,2012,39(4):31-33.
[6]齐黎明,赵玉岐,王轶波,等.基于封孔前瓦斯损失量的测压结果修正分析[J].煤炭学报,2007,32(1):60.
[7]杨利平,张凤杰.深部软岩巷道支护围岩结构的变化规律研究[J].煤炭技术,2014,33(6):19-22.
[8]何要泉.平煤十二矿本煤层瓦斯抽采钻孔封孔技术试验研究[D].焦作:河南理工大学,2012.
[9]何俊,董开元.大断面煤层巷道瓦斯抽采钻孔合理封孔深度研究[J].中国煤炭,2014,40(2):101-104.
[10]王维忠,刘东,许江,等.瓦斯抽采过程中钻孔位置对煤层参数演化影响的试验研究[J].煤炭学报,2016,41(2):414-423.
[11]陈建忠,代志旭.瓦斯抽采钻孔合理封孔长度确定方法[J].煤矿安全,2012,43(8):8-10.
[12]武炜,王兆丰.钻孔封孔注浆压力及封孔深度数值模拟研究[J].煤炭科学技术,2015,43(11):68-72.