下行穿层瓦斯抽采钻孔排水与增采封孔工艺优化
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摘要
八矿戊_(9-10)-14160运输巷高位抽排巷下行穿层钻孔抽采过程中,由于岩石与煤体含水和生产用水的影响,抽采钻孔内产生大量积水与积渣,无法及时排出抽采通道,造成抽采通道堵塞,进而影响抽放效果。通过比较分析四种囊袋和排水孔的不同配合方式,同时基于封堵压气排水原理,提出了封堵注浆、两堵一注的封孔方式及排水技术,利用高压气体定期将孔内积水与积渣及时排出,保证了抽采通道的畅通,实现了下行钻孔的高效抽采。
In the process of gas drainage in Ⅴ_(9-10)-14160 machine roadway by using downward layer-through boreholes,affected by water in rock and coal,there exist mush water and waste,which can not be discharged from drainage channels,and influences the effect of gas drainage. Through comparing four combined methods of bags and water drainage boreholes,and based on the priciple of pressure drainage by hole sealing,hole sealing ways and water drainage ways by using blocking and grouting, " Two sealing and one grouting" were proposed,and high pressure gas was applied to discharge the water and waste in boreholes. All this has ensured the unobstructed of the drainage channles,and has realized the high efficient drainage.
In the process of gas drainage in Ⅴ_(9-10)-14160 machine roadway by using downward layer-through boreholes,affected by water in rock and coal,there exist mush water and waste,which can not be discharged from drainage channels,and influences the effect of gas drainage. Through comparing four combined methods of bags and water drainage boreholes,and based on the priciple of pressure drainage by hole sealing,hole sealing ways and water drainage ways by using blocking and grouting, " Two sealing and one grouting" were proposed,and high pressure gas was applied to discharge the water and waste in boreholes. All this has ensured the unobstructed of the drainage channles,and has realized the high efficient drainage.
引文
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[10]林昌环,黄学矿.高赋水条件下下向穿层钻孔施工技术研究[J].科技创新与应用,2015(15):144-145.Lin Changhuan,Huang Xuekuang.Research on construction technology of downward penetrating drilling under the condition of high water content[J].Technology Innovation and Application,2015(15):144-145.
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[14]苏云龙,林柏泉,庞源,等.围岩含水时下行穿层测压钻孔封孔工艺的改进[J].煤矿安全,2015,46(6):126-128.Su Yunlong,Lin Baiquan,Pang Yuan,et al.Water cut of the wear layer of surrounding rock pressure of drilling hole sealing process improvement[J].Safety in Coal Mines,2015,46(6):126-128.
[15]张瑞林,刘晓,贾金峰.围岩含水条件下穿层测试瓦斯压力的封孔工艺[J].煤矿安全,2008,39(7):17-19.Zhang Ruilin,Liu Xiao,Jia Jinfeng.Aqueous layer wear test under the condition of gas pressure of surrounding rock of hole sealing process[J].Safety in Coal Mines,2008,39(7):17-19.
[16]翟成,许彦明,李全贵,等.多孔并联式压风排水技术的研究及其在瓦斯抽采中的应用[J].矿业安全与环保,2014,(4):50-53.Zhai Cheng,Xu Yanming,Li Quangui,et al.Porous parallel pressurized air drainage technology research and its application in gas extraction[J].Journal of Mining Safety and Environmental Protection,2014,(4):50-53.
[17]王良金,刘晓.含水煤层下向钻孔抽采增产技术研究[J].煤炭技术,2014,33(6):108-110.Wang Liangjin,Liu Xiao.Water next to the hole of coal seam extraction production technology research[J].Journal of Coal Technology,2014,33(6):108-110.
[18]周成刚,申茂良,朱亚林.含水岩层下向穿层钻孔瓦斯预抽技术研究[J].煤矿开采,2016,21(5):95-97.Zhou Chenggang,Shen Maoliang,Zhu Yalin.Water layers to wear under the rock drill gas drainage technology research[J].Coal Mining Technology,2016,21(5):95-97.
[2]王维忠,陶云奇,许江,等.不同瓦斯压力条件下的煤与瓦斯突出模拟实验[J].重庆大学学报,2010,33(3):82-86.Wang Weizhong,Tao Yunqi,Xu Jiang,et al.Simulation of coal and gas outburst with different gas pressure[J].Journal of Chongqing University,2010,33(3):82-86.
[3]程远平,付建华,俞启香.中国煤矿瓦斯抽采技术的发展[J].采矿与安全工程学报,2009,26(2):127-139.Cheng Yuanping,Fu Jianhua,Yu Qixiang.Development of gas extraction technology in coal mines of China[J].Journal of Mining&Safety Engineering,2009,26(2):127-139.
[4]袁亮.卸压开采抽采瓦斯理论及煤与瓦斯共采技术体系[J].煤炭学报,2009,34(1):1-8.Yuan Liang.Pressure relief mining theory of gas drainage and technology system of coal and gas jointly production[J].Journal of China Coal Society,2009,34(1):1-8.
[5]孙立华.关于提高封孔质量问题[J].煤田地质与勘探,1994(1):61-62.Sun Lihua.With regard to problem of improving sealing quality[J].Coal Geology&Exploration,1994(1):61-62.
[6]黄鑫业,蒋承林.本煤层瓦斯抽采钻孔带压封孔技术研究[J].煤炭科学技术,2011,39(10):45-48.Huang Xinye,Jiang Chenglin.Study on borehole pressurized sealing technology for gas drainage borehole in mining seam[J].Coal Science and Technology,2011,39(10):45-48.
[7]李波,李长松,魏建平,等.套管带压固结封孔技术在瓦斯压力测定中的应用[J].煤炭科学技术,2009(3):38-41.Li Bo,Li Changsong,Wei Jianping,et al.Application of casing pressure consolidation sealing technology in gas pressure measurement[J].Coal Science and Technology,2009(3):38-41.
[8]李福泉.开展瓦斯地质研究,指导煤矿安全生产——瓦斯地质条件对瓦斯赋存和涌出的影响出对策初探[C]//全国瓦斯地质学术会议,1999.
[9]董杨,李友军,赵景礼.低透气性煤层围岩含水条件下测压技术[J].内蒙古煤炭经济,2013(5):76-77.Dong Yang,Li Youjun,Zhao Jingli.Low permeability coal seam surrounding rock under the condition of water pressure technology[J].Journal of Inner Mongolia Coal Economy,2013(5):76-77.
[10]林昌环,黄学矿.高赋水条件下下向穿层钻孔施工技术研究[J].科技创新与应用,2015(15):144-145.Lin Changhuan,Huang Xuekuang.Research on construction technology of downward penetrating drilling under the condition of high water content[J].Technology Innovation and Application,2015(15):144-145.
[11]刘发义.含水围岩下向深钻孔两级套管堵水测压技术研究[J].中州煤炭,2014(8):65-67.Liu Fayi.Water to deep surrounding rock under the two levels of casing drilling water plugging pressure technology research[J].Zhongzhou Coal,2014(8):65-67.
[12]刘洋,贾泉敏,晁建伟.胶囊封孔工艺在下向测压钻孔中的应用[J].矿业安全与环保,2015(1):98-100.Liu Yang,Jia Quanmin,Chao Jianwei.Capsule next to the application of pressure drilling hole sealing process[J].Journal of Mining Safety and Environmental Protection,2015,(1):98-100.
[13]杨永良,李增华,高文举,等.煤层钻孔风力排渣模拟实验研究[J].采矿与安全工程学报,2006,23(4):415-418.Yang Yongliang,Li Zenghua,Gao Wenju,et al.Coal seam drilling wind discharge simulation experiment research[J].Journal of Mining and Safety Engineering,2006,23(4):415-418.
[14]苏云龙,林柏泉,庞源,等.围岩含水时下行穿层测压钻孔封孔工艺的改进[J].煤矿安全,2015,46(6):126-128.Su Yunlong,Lin Baiquan,Pang Yuan,et al.Water cut of the wear layer of surrounding rock pressure of drilling hole sealing process improvement[J].Safety in Coal Mines,2015,46(6):126-128.
[15]张瑞林,刘晓,贾金峰.围岩含水条件下穿层测试瓦斯压力的封孔工艺[J].煤矿安全,2008,39(7):17-19.Zhang Ruilin,Liu Xiao,Jia Jinfeng.Aqueous layer wear test under the condition of gas pressure of surrounding rock of hole sealing process[J].Safety in Coal Mines,2008,39(7):17-19.
[16]翟成,许彦明,李全贵,等.多孔并联式压风排水技术的研究及其在瓦斯抽采中的应用[J].矿业安全与环保,2014,(4):50-53.Zhai Cheng,Xu Yanming,Li Quangui,et al.Porous parallel pressurized air drainage technology research and its application in gas extraction[J].Journal of Mining Safety and Environmental Protection,2014,(4):50-53.
[17]王良金,刘晓.含水煤层下向钻孔抽采增产技术研究[J].煤炭技术,2014,33(6):108-110.Wang Liangjin,Liu Xiao.Water next to the hole of coal seam extraction production technology research[J].Journal of Coal Technology,2014,33(6):108-110.
[18]周成刚,申茂良,朱亚林.含水岩层下向穿层钻孔瓦斯预抽技术研究[J].煤矿开采,2016,21(5):95-97.Zhou Chenggang,Shen Maoliang,Zhu Yalin.Water layers to wear under the rock drill gas drainage technology research[J].Coal Mining Technology,2016,21(5):95-97.