云盖山煤矿瓦斯抽采效果考察
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摘要
随着矿井开采深度的增加和开采强度的增大,煤与瓦斯突出问题越来越严重,煤层瓦斯压力、瓦斯含量、地应力加大致使突出矿井的突出危险性越来越严重,突出频率增加,突出强度增大,大型、特大型突出所占比例越来越大,煤与瓦斯突出已成为严重威胁矿井安全生产的主要问题之一。目前不具备保护层开采条件的煤层,井下钻孔预抽瓦斯是防治煤与瓦斯突出的主要手段之一,钻孔瓦斯抽采效果与煤层瓦斯含量、透气性系数、抽采钻孔直径及负压、抽采目的和时间等因素有关。针对云盖山煤矿在瓦斯治理中采用的不同瓦斯治理钻孔,结合矿井实际生产条件和不同瓦斯治理钻孔的有效抽放半径的现场测试结果,对不同瓦斯治理钻孔的瓦斯抽采效果进行考察,验证了不同瓦斯治理钻孔的有效抽放半径等技术参数。
With the increase of mining depth and the increase of mining intensity,the problem of coal and gas outburst is becoming more and more serious.The coal seam gas pressure,gas content and ground stress increase the outburst danger of the prominent mine more and more,and the protruding frequency increases.The outstanding strength had increased,and the proportion of large and extra-large protrusions had become larger and larger.Coal and gas outburst had become one of the major problems that seriously threaten the safe production of mines.At present,there was no coal seam with protective layer mining conditions.The pre-extracted gas in underground drilling was one of the main means to prevent coal and gas outburst.The effect of drilling gas drainage and coal seam gas content,gas permeability coefficient,drilling diameter and negative pressure,extraction purpose and time were related.According to the different gas control boreholes adopted in the gas control of Yungaishan Coal Mine,combined with the actual production conditions of the mine and the field test results of the effective drainage radius of different gas control boreholes,the gas drainage effect of different gas control boreholes was carried out.Inspected and verified the technical parameters such as the effective drainage radius of different gas control boreholes.
With the increase of mining depth and the increase of mining intensity,the problem of coal and gas outburst is becoming more and more serious.The coal seam gas pressure,gas content and ground stress increase the outburst danger of the prominent mine more and more,and the protruding frequency increases.The outstanding strength had increased,and the proportion of large and extra-large protrusions had become larger and larger.Coal and gas outburst had become one of the major problems that seriously threaten the safe production of mines.At present,there was no coal seam with protective layer mining conditions.The pre-extracted gas in underground drilling was one of the main means to prevent coal and gas outburst.The effect of drilling gas drainage and coal seam gas content,gas permeability coefficient,drilling diameter and negative pressure,extraction purpose and time were related.According to the different gas control boreholes adopted in the gas control of Yungaishan Coal Mine,combined with the actual production conditions of the mine and the field test results of the effective drainage radius of different gas control boreholes,the gas drainage effect of different gas control boreholes was carried out.Inspected and verified the technical parameters such as the effective drainage radius of different gas control boreholes.
引文
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[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 Jianan.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.安全与环境
[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.Determination method of coal gas drainage radius based on methane 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,2009,37(2):59-62.Duzesheng,Luo Haizhu.Calculation method for the determination of effective gas discharge radius in coal mines[J].Coal Science and Technology,2009,37(2):59-62.
[4] 陈金玉,马丕梁,孔一凡,等.SF-6 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.SF-6 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(6):19-22.Xiong Yongsheng,Hu Xianwen.Study on the effect of gas exhaust radius of punch drill[J].Coal Mine Modernization,2017(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 COMSOL 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 COMSOL[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 Zhongfong,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] 秦伟,许家林,吴仁伦,等.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.Qin Wei,Xu Jialin,Wu Renlun,et al.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 Jianan.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.安全与环境
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