云盖山煤矿瓦斯治理钻孔有效抽放半径研究
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摘要
针对不具备保护层开采条件的煤层,钻孔预抽煤层瓦斯是防治煤与瓦斯突出最有效的措施之一。钻孔有效影响半径是进行抽采方法选择、确定钻孔布置参数以及评价抽采效果的重要依据,钻孔间距过大,抽采范围内容易形成抽采盲区,达不到消突的目的;钻孔间距过小,虽然一定程度上提高抽采率、增大抽采量,但增加了不必要的钻孔布置工程量,容易造成人力和物力的浪费。因此合理有效地施工抽采钻孔对突出煤层进行消突,已成为保安全、促生产过程中不可缺少的重要环节。为避免钻孔设计及施工的盲目性,提高抽采钻孔的利用率及施工速度,对抽采有效影响半径的测试和确定已成为当前的首要工作。
For coal seams without protective seam mining conditions,pre-drainage of coal seam gas by drilling was one of the most effective measures to prevent coal and gas outburst.Effective influence radius of borehole was an important basis for selection of extraction method,determination of borehole layout parameters and evaluation of extraction effect.Over-large borehole spacing made it easy to form blind area of extraction within the extraction scope,which can not achieve the purpose of eliminating outburst.Over-small borehole spacing increases unnecessary borehole layout volume,although it improved extraction rate and enlarges extraction volume to a certain extent,easy to waste of manpower and material resources.Therefore,reasonable and effective construction of extraction boreholes to eliminate outburst of outburst coal seam has become an indispensable important link in ensuring safety and promoting production process.In order to avoid the blindness of drilling design and construction and improve the utilization rate and construction speed of drilling hole,the testing and determination of effective influencing radius of extraction had become the primary work at present.
For coal seams without protective seam mining conditions,pre-drainage of coal seam gas by drilling was one of the most effective measures to prevent coal and gas outburst.Effective influence radius of borehole was an important basis for selection of extraction method,determination of borehole layout parameters and evaluation of extraction effect.Over-large borehole spacing made it easy to form blind area of extraction within the extraction scope,which can not achieve the purpose of eliminating outburst.Over-small borehole spacing increases unnecessary borehole layout volume,although it improved extraction rate and enlarges extraction volume to a certain extent,easy to waste of manpower and material resources.Therefore,reasonable and effective construction of extraction boreholes to eliminate outburst of outburst coal seam has become an indispensable important link in ensuring safety and promoting production process.In order to avoid the blindness of drilling design and construction and improve the utilization rate and construction speed of drilling hole,the testing and determination of effective influencing radius of extraction had become the primary work at present.
引文
[1] 张永红.穿层钻孔有效抽采半径的确定[J].工业技术,2014(11):28-29.Zhang Yonghong.Determination of effective extraction radius of perforated boreholes[J].Industrial Technology,2014(11):28-29.
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[4] 陈金玉,马丕梁,孔一凡,等.SF6 气体示踪法测定钻孔瓦斯抽放有效半径[J].煤矿安全,2008,39(9):23-25.Chen Jinyu,Ma Piliang,Kong Yifan,et al.SF6 gas tracer method to determine the effective radius of drilling gas extraction[J].Safety in Coal Mines,2008,39(9):23-25.
[5] 熊勇胜,胡显文.穿层钻孔瓦斯抽采半径效果考察研究[J].煤矿现代化,2017,41(6):19-22.Xiong Yongsheng,Hu Xianwen.Study on the effect of gas exhaust radius of punch drill[J].Modernization of Coal Mines,2017,41(6):19-22.
[6] 徐遵玉.穿层钻孔预抽煤层瓦斯有效半径考察方法研究[J].煤炭工程,2018,50(2):19-22.Xu Zunyu.Study on the effective radius of pre-drilled coal seam gas through perforation[J].Coal Engineering,2018,50(2):19-22.
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[8] 王兆丰,李炎涛,夏会辉,等.基于COMOSOL的顺层钻孔有效抽采半径的数值模拟[J].煤矿安全,2012,43(10):4-6.Wang Zhaofeng,Li Yantao,Xia Huihui,et al.Numerical simula-tion on effective drainage radius of drill hole along coal seam based on COMOSOL[J].Safety in Coal Mines,2012,43(10):4-6.
[9] 赵中锋,陈广金,张向阳.穿层钻孔区域消突工艺在白坪煤业的应用及抽采达标评判[J].煤矿安全,2013,44(6):150-152.Zhao Zhongfeng,Chen Guangjin,Zhang Xiangyang.Application and extraction standards assessment of the strain drilling area in Baiping Coal Industry[J].Safety in Coal Mines,2013,44(6):150-152.
[10] 许家林,吴仁伦.基于CFD模拟的邻近层穿层钻孔瓦斯抽采优化设计[J].采矿与安全工程学报,2012,29(1):111-117.Xu Jialin,Wu Renlun.Optimization design of gas extraction from adjacent perforated boreholes based on CFD simulation[J].Journal of Mining and Safety Engineering,2012,29(1):111-117.
[11] 王兆丰,周少华,李志强.瓦斯抽采钻孔有效抽采半径的数值计算方法[J].煤炭工程,2011(6):82-84.Wang Zhaofeng,Zhou Shaohua,Li Zhiqiang.Numerical calculation method of effective drainage radius for gas drainage borehole[J].Coal Engineering,2011(6):82-84.
[12] 王宏图,江记记,王再青,等.本煤层单一顺层瓦斯抽采钻孔的渗流场数值模拟[J].重庆大学学报,2011,34(4):24-29.Wang Hongtu,Jiang Jiji,Wang Zaiqing,et al.Numerical simulation of seepage field of gas extraction drilling of single bedding of mining-coal bed[J].Journal of Chongqing University,2011,34(4):24-29.
[13] 郭培红,李海霞,朱建安.煤层钻孔瓦斯抽放数值模拟[J].辽宁工程技术大学学报(自然科学版),2009,28(S):260-262.Guo Peihong,Li Haixia,Zhu Jian′an.Numerical simulation of gas drainage from boreholes in coal seams[J].Journal of Liaoning Technical University(Natural Science),2009,28(S):260-262.
[14] 司鹄,郭涛,李晓红.钻孔抽放瓦斯流固耦合分析及数值模拟[J].重庆大学学报,2011,34(11):105-110.Si Hu,Guo Tao,Li Xiaohong.Analysis and numerical simulation of fluid structure coupling of gas drainage from boreholes[J].Journal of Chongqing University,2011,34(11):105-110.
[15] 辛明.利用 SF6示踪技术测试煤层瓦斯抽采半径[J].安徽理工大学学报(自然科学版),2012,32(1):64-66.Xin Ming.Determination of gas extraction radius in coal seams by tracer technique with SF6[J].Journal of Anhui University of Science and Technology(Natural Science),2012,32(1):64-66.
[16] 郝富昌,刘明举,孙丽娟.瓦斯抽采半径确定方法的比较及存在问题研究[J].煤炭科学技术,2012,40(12):55-58.Hao Fuchang,Liu Mingju,Sun Lijuan.Study on comparison of methods to determine gas drainage radius and existed problems[J].Coal Science and Technology,2012,40(12):55-58.
[17] 郝天轩,宋超.数值模拟结合 SF6示踪法确定煤层钻孔瓦斯抽采有效半径[J].中国安全科学学报,2013,23(1):22-27.Hao Tianxuan,Song Chao.Determining gas extraction effective radius of borehole in coal seam by numerical simulation and SF6 gas tracer method[J].China Safety Science Journal,2013,23(1):22-27.
[18] 关联合,高亮.本煤层瓦斯抽采半径测定技术研究与实践[J].中国煤炭,2014,40(9):111-113.Guan Lianhe,Gao Liang.Research and practice of radius measurement technology of gas drainage from active coal seam[J].China Coal,2014,40(9):111-113.
[19] 刘厅,林柏泉,邹全乐,等.基于煤层原始瓦斯含量和压力的割缝钻孔有效抽采半径测定[J].煤矿安全,2014,45(8):8-11.Liu Ting,Lin Baiquan,Zou Quanle,et al.Measurement of effective drainage radius based on primitive gas content and pressure for slotted drilling[J].Safety in Coal Mines,2014,45(8):8-11.
[20] 刘三钧,马耕,卢杰,等.基于瓦斯含量的相对压力测定有效半径技术[J].煤炭学报,2011,36(10):1716-1719.Liu Sanjun,Ma Geng,Lu Jie,et al.Relative pressure determination technology for effective radius found on gas content[J].Journal of China Coal Society,2011,36(10):1716-1719.
[2] 马耕,苏现波,魏庆喜.基于瓦斯流态的抽放半径确定方法[J].煤炭学报,2009,34(4):501-504.Ma Geng,Su Xianbo,Wei Qingxi.Method for determination of discharge radius based on gas flow state[J].Journal of China Coal Society,2009,34(4):501-504.
[3] 杜泽生,罗海珠.煤矿瓦斯有效抽放半径的测定计算方法[J].煤炭科学技术,2009(2):59-62.Du Zesheng,Luo Haizhu.Calculation method for the determination of effective gas discharge radius in coal mines[J].Coal Science and Technology,2009(2):59-62.
[4] 陈金玉,马丕梁,孔一凡,等.SF6 气体示踪法测定钻孔瓦斯抽放有效半径[J].煤矿安全,2008,39(9):23-25.Chen Jinyu,Ma Piliang,Kong Yifan,et al.SF6 gas tracer method to determine the effective radius of drilling gas extraction[J].Safety in Coal Mines,2008,39(9):23-25.
[5] 熊勇胜,胡显文.穿层钻孔瓦斯抽采半径效果考察研究[J].煤矿现代化,2017,41(6):19-22.Xiong Yongsheng,Hu Xianwen.Study on the effect of gas exhaust radius of punch drill[J].Modernization of Coal Mines,2017,41(6):19-22.
[6] 徐遵玉.穿层钻孔预抽煤层瓦斯有效半径考察方法研究[J].煤炭工程,2018,50(2):19-22.Xu Zunyu.Study on the effective radius of pre-drilled coal seam gas through perforation[J].Coal Engineering,2018,50(2):19-22.
[7] 徐东方,王兆丰.压降法测定钻孔的抽放影响半径试验研究[J].煤矿安全,2009,40(5):1-3.Xu Dongfang,Wang Zhaofeng.Test study on the influence radius of drainage on drilling by pressure drop method[J].Safety in Coal Mines,2009,40(5):1-3.
[8] 王兆丰,李炎涛,夏会辉,等.基于COMOSOL的顺层钻孔有效抽采半径的数值模拟[J].煤矿安全,2012,43(10):4-6.Wang Zhaofeng,Li Yantao,Xia Huihui,et al.Numerical simula-tion on effective drainage radius of drill hole along coal seam based on COMOSOL[J].Safety in Coal Mines,2012,43(10):4-6.
[9] 赵中锋,陈广金,张向阳.穿层钻孔区域消突工艺在白坪煤业的应用及抽采达标评判[J].煤矿安全,2013,44(6):150-152.Zhao Zhongfeng,Chen Guangjin,Zhang Xiangyang.Application and extraction standards assessment of the strain drilling area in Baiping Coal Industry[J].Safety in Coal Mines,2013,44(6):150-152.
[10] 许家林,吴仁伦.基于CFD模拟的邻近层穿层钻孔瓦斯抽采优化设计[J].采矿与安全工程学报,2012,29(1):111-117.Xu Jialin,Wu Renlun.Optimization design of gas extraction from adjacent perforated boreholes based on CFD simulation[J].Journal of Mining and Safety Engineering,2012,29(1):111-117.
[11] 王兆丰,周少华,李志强.瓦斯抽采钻孔有效抽采半径的数值计算方法[J].煤炭工程,2011(6):82-84.Wang Zhaofeng,Zhou Shaohua,Li Zhiqiang.Numerical calculation method of effective drainage radius for gas drainage borehole[J].Coal Engineering,2011(6):82-84.
[12] 王宏图,江记记,王再青,等.本煤层单一顺层瓦斯抽采钻孔的渗流场数值模拟[J].重庆大学学报,2011,34(4):24-29.Wang Hongtu,Jiang Jiji,Wang Zaiqing,et al.Numerical simulation of seepage field of gas extraction drilling of single bedding of mining-coal bed[J].Journal of Chongqing University,2011,34(4):24-29.
[13] 郭培红,李海霞,朱建安.煤层钻孔瓦斯抽放数值模拟[J].辽宁工程技术大学学报(自然科学版),2009,28(S):260-262.Guo Peihong,Li Haixia,Zhu Jian′an.Numerical simulation of gas drainage from boreholes in coal seams[J].Journal of Liaoning Technical University(Natural Science),2009,28(S):260-262.
[14] 司鹄,郭涛,李晓红.钻孔抽放瓦斯流固耦合分析及数值模拟[J].重庆大学学报,2011,34(11):105-110.Si Hu,Guo Tao,Li Xiaohong.Analysis and numerical simulation of fluid structure coupling of gas drainage from boreholes[J].Journal of Chongqing University,2011,34(11):105-110.
[15] 辛明.利用 SF6示踪技术测试煤层瓦斯抽采半径[J].安徽理工大学学报(自然科学版),2012,32(1):64-66.Xin Ming.Determination of gas extraction radius in coal seams by tracer technique with SF6[J].Journal of Anhui University of Science and Technology(Natural Science),2012,32(1):64-66.
[16] 郝富昌,刘明举,孙丽娟.瓦斯抽采半径确定方法的比较及存在问题研究[J].煤炭科学技术,2012,40(12):55-58.Hao Fuchang,Liu Mingju,Sun Lijuan.Study on comparison of methods to determine gas drainage radius and existed problems[J].Coal Science and Technology,2012,40(12):55-58.
[17] 郝天轩,宋超.数值模拟结合 SF6示踪法确定煤层钻孔瓦斯抽采有效半径[J].中国安全科学学报,2013,23(1):22-27.Hao Tianxuan,Song Chao.Determining gas extraction effective radius of borehole in coal seam by numerical simulation and SF6 gas tracer method[J].China Safety Science Journal,2013,23(1):22-27.
[18] 关联合,高亮.本煤层瓦斯抽采半径测定技术研究与实践[J].中国煤炭,2014,40(9):111-113.Guan Lianhe,Gao Liang.Research and practice of radius measurement technology of gas drainage from active coal seam[J].China Coal,2014,40(9):111-113.
[19] 刘厅,林柏泉,邹全乐,等.基于煤层原始瓦斯含量和压力的割缝钻孔有效抽采半径测定[J].煤矿安全,2014,45(8):8-11.Liu Ting,Lin Baiquan,Zou Quanle,et al.Measurement of effective drainage radius based on primitive gas content and pressure for slotted drilling[J].Safety in Coal Mines,2014,45(8):8-11.
[20] 刘三钧,马耕,卢杰,等.基于瓦斯含量的相对压力测定有效半径技术[J].煤炭学报,2011,36(10):1716-1719.Liu Sanjun,Ma Geng,Lu Jie,et al.Relative pressure determination technology for effective radius found on gas content[J].Journal of China Coal Society,2011,36(10):1716-1719.
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