山东许厂煤矿水文孔井下启封技术
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摘要
封闭不良钻孔导通含水层,给煤矿安全生产带来威胁。以山东许厂煤矿X5-3号水文孔为研究对象,优化选用井下启封技术,采用高压注浆法封堵三灰裂隙,在1337工作面皮带顺槽通过钻探、巷探找到X5-3号钻孔位置进行封堵,终孔注浆压力为8 MPa,持续30 min,共用水泥6 000 kg,成功实现了井下封堵。井下启封技术的应用,不仅保证煤矿安全生产,避免受水害影响,而且降低了工程费用,对于同类型钻孔启封具有借鉴意义。
Connection of poorly sealed boreholes to an aquifer poses a threat to the safety of coal mine production. Taking the hydrological hole X5-3 of Xuchang coal mine in Shandong Province as the research object, the technology of underground opening and sealing was optimized, the high pressure grouting method was used to seal the lime-fly ash fissures, and the location of X5-3 borehole was found along the belt of 1337 working face through drilling and roadway exploration. The grouting pressure of the final hole was 8 MPa, lasted 30 minutes and 6,000 kg of cement were used totally, underground sealing and plugging were successfully realized. The application of underground opening technology not only ensures the safety of coal mine production and avoids the influence of water damage, but also reduces the engineering cost, which has reference significance for the same type of borehole opening.
Connection of poorly sealed boreholes to an aquifer poses a threat to the safety of coal mine production. Taking the hydrological hole X5-3 of Xuchang coal mine in Shandong Province as the research object, the technology of underground opening and sealing was optimized, the high pressure grouting method was used to seal the lime-fly ash fissures, and the location of X5-3 borehole was found along the belt of 1337 working face through drilling and roadway exploration. The grouting pressure of the final hole was 8 MPa, lasted 30 minutes and 6,000 kg of cement were used totally, underground sealing and plugging were successfully realized. The application of underground opening technology not only ensures the safety of coal mine production and avoids the influence of water damage, but also reduces the engineering cost, which has reference significance for the same type of borehole opening.
引文
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[14]刘德民，连会青，李飞.封闭不良钻孔侧壁突水机理研究[J].中国安全生产科学技术，2014,10(5):74–77.LIU Demin,LIAN Huiqing,LI Fei. Research on mechanism of water inrush at side face of poor sealing borehole[J]. Journal of Safety Science and Technology,2014,10(5):74–77.
[15]李永军，孙浩.基于FLAC3D的封闭不良钻孔数值模拟研究[J].煤炭技术，2016,35(8):143–145.LI Yongjun,SUN Hao. Numerical simulation of poor sealing borehole based on FLAC3D[J]. Coal Technology,2016,35(8):143–145.
[16]王卓.整合矿井封堵不良钻孔综合治理技术[J].煤炭与化工，2018,41(8):73–75.WANG Zhuo. Comprehensive management technology of improper drilling in integrated mine sealing[J]. Coal and Chemical Industry,2018,41(8):73–75.
[2]董书宁，虎维岳.中国煤矿水害基本特征及其主要影响因素[J].煤田地质与勘探，2007,35(5):34–37.DONG Shuning,HU Weiyue. Basic characteristics and main controlling factors of coal mine water hazard in China[J]. Coal Geology&Exploration,2007,35(5):34–37.
[3]国家安监总局，国家煤监局.煤矿安全规程[M].北京：煤炭工业出版社，2016.
[4]李佳骏.封闭不良钻孔导水及安全性评价方法研究[D].徐州：中国矿业大学，2016.
[5]刘德民，尹尚先，连会青.封闭不良钻孔导水危险性定量评价研究[J].煤炭工程，2014,46(4):119–125.LIU De min,YIN Shangxian,LIAN Huiqing. Quantitative evaluation on risk of water inrush from poor sealing borehole[J].Coal Engineering,2014,46(4):119–125.
[6]彭海斌.封闭不良钻孔的突水危害及治理研究[J].能源与节能，2019(6):64–65.PENG Haibin. Study on water inrush damage of poorly sealed boreholes and its treatment[J]. Energy and Energy Conservation,2019(6):64–65.
[7]肖乐乐，魏久传，牛超，等.基于BP人工神经网络的封闭不良钻孔导水危险性评价[J].矿业安全与环保，2014,41(6):40–43.XIAO Lele,WEI Jiuchuan,NIU Chao,et al. Water inrush risk evaluation of badly-sealed boreholes based on BP artificial neural network[J]. Mining Safety&Environmental Protection,2014,41(6):40–43.
[8]王清虎，吴江.煤矿井下封闭不良勘探钻孔综合探查方法与实践[J].煤炭科学技术，2017,45(8):228–232.Wang Qinghu,Wu Jiang. Combined exploration method of poor sealing exploration borehole in underground coal mine and its practices[J]. Coal Science and Technology, 2017, 45(8):228–232.
[9]马智，马兴华，张刚，等.煤矿开采区域内废弃油井立体封堵技术的应用[J].煤田地质与勘探，2018,46(增刊1):93–96.MA Zhi,MA Xinghua,ZHANG Gang,et al. Application of three-dimensional plugging technology for abandoned oil wells in coal mining areas[J]. Coal Geology&Exploration,2018,46(S1):93–96.
[10]高亮.采面过封闭不良钻孔防治水措施[J].煤矿安全，2018,49(增刊1):81–84.GAO Liang. Water prevention and control countermeasures for working face passing through poor sealing drilling[J]. Safety in Coal Mines,2018,49(S1):81–84.
[11]高卫富，施龙青，于小鸽，等.矿井三维电法对封闭不良钻孔的探测[J].湖南科技大学学报(自然科学版)，2017,32(3):6–9.Gao Weifu,Shi Longqing,YU Xiaoge,et al. Study on detection of sealed bad drilling using mine 3D DC method[J]. Journal of Hunan University of Science&Technology(Natural Science Edition),2017,32(3):6–9.
[12]李尧，李术才，刘斌，等.钻孔雷达探测地下不良地质体的正演模拟及其复信号分析[J].岩土力学，2017,38(1):300–308.LI Yao,LI Shucai,LIU Bin,et al. Forward simulation and complex signal analysis of borehole radar detection for underground adverse geological bodies[J]. Rock and Soil Mechanics,2017,38(1):300–308.
[13]任金武.煤矿封闭不良钻孔评价与综合处理技术[J].能源与节能，2014(7):140–142.REN Jinwu. Evaluation and comprehensive treatment technology of poor sealing boreholes in coal mines[J]. Energy and Energy Conservation,2014(7):140–142.
[14]刘德民，连会青，李飞.封闭不良钻孔侧壁突水机理研究[J].中国安全生产科学技术，2014,10(5):74–77.LIU Demin,LIAN Huiqing,LI Fei. Research on mechanism of water inrush at side face of poor sealing borehole[J]. Journal of Safety Science and Technology,2014,10(5):74–77.
[15]李永军，孙浩.基于FLAC3D的封闭不良钻孔数值模拟研究[J].煤炭技术，2016,35(8):143–145.LI Yongjun,SUN Hao. Numerical simulation of poor sealing borehole based on FLAC3D[J]. Coal Technology,2016,35(8):143–145.
[16]王卓.整合矿井封堵不良钻孔综合治理技术[J].煤炭与化工，2018,41(8):73–75.WANG Zhuo. Comprehensive management technology of improper drilling in integrated mine sealing[J]. Coal and Chemical Industry,2018,41(8):73–75.