赵固二矿千米定向煤钻孔区域瓦斯治理关键技术研究
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摘要
针对中硬高承压水煤层瓦斯治理周期长、突水威胁严重等问题,利用千米定向煤钻孔超前预抽代替底板抽采岩巷进行区域瓦斯治理,同时研制出基于煤层深孔定点密闭取心的瓦斯含量测试装置,解决了瓦斯防突措施效果检验参数难以测定的问题。该技术经在河南能源焦煤公司赵固二矿试验,实现了对600 m煤巷条带煤层瓦斯的均匀抽采控制,完成了超长区段一次性整体评价,保证了煤巷安全掘进,成为赵固二矿深部煤层区域瓦斯治理的新技术,可为类似地质条件的煤层区域瓦斯治理提供参考。
Aiming at the gas control problems of long cycle and water inrush serious threat in medium-hard and high-pressure confined water coal seam,by using kilometre-directional coal drilling instead of floor rock roadway to pre-draw coal seam gas,a device for gas content measuring based on fixed-point closed sampling of deep hole into coal seam was developed,so that the parameter determination problem for the effect test was solved.After the industrial test in Zhaogu No. 2 mine,the uniform gas extraction and control of 600 m long coal roadway strip was realized,and one-off overall evaluation of ultra-long section was achieved,which ensured the safe driving in gateway. The new technology of gas control in deep coal seam area of Zhaogu No. 2 coal mine provided a reference for gas control of coal seams similar to geological conditions.
Aiming at the gas control problems of long cycle and water inrush serious threat in medium-hard and high-pressure confined water coal seam,by using kilometre-directional coal drilling instead of floor rock roadway to pre-draw coal seam gas,a device for gas content measuring based on fixed-point closed sampling of deep hole into coal seam was developed,so that the parameter determination problem for the effect test was solved.After the industrial test in Zhaogu No. 2 mine,the uniform gas extraction and control of 600 m long coal roadway strip was realized,and one-off overall evaluation of ultra-long section was achieved,which ensured the safe driving in gateway. The new technology of gas control in deep coal seam area of Zhaogu No. 2 coal mine provided a reference for gas control of coal seams similar to geological conditions.
引文
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[11]齐黎明.卸压密闭煤层瓦斯含量测定技术研究[D].北京:中国地质大学(北京),2011.QI L M. Research on the measuring gas content technology of stress-releasing and sealed coal core[D].Beijing:China University of Geosciences(Beijing),2011.
[12]王云刚,鄢桂云,李盟.煤样漏失瓦斯量推算试验研究[J].河南理工大学学报(自然科学版),2013,32(6):658-662+690.WANG Y G,YAN G Y,LI M. Experimental study on calculation of gas lost quantity in coal samples[J].Journal of Henan Polytechnic University(Natural Science),2013,32(6):658-662+690.
[13]周金龙,董洪凯,李国强.顺层定向长钻孔预抽煤层瓦斯区域防突措施效果检验方法研究[J].矿业安全与环保,2013,40(6):69-72.ZHOU J L,DONG H K,LI G Q. Research on effect test method for regional gas pre-drainage measureagainst outburst by directional long boreholes along coal seam[J]. Mining Safety&Environmental Protection,2013,40(6):69-72.
[14]杨宏民,王东洋,陈立伟.煤层注N2置驱瓦斯过程中压力场效应研究[J].河南理工大学学报(自然科学版),2017,36(1):7-11.YANG H M,WANG D Y,CHEN L W. Study on pressure field effect in experiment of displacement methane by nitrogen injection in coalbed[J]. Journal of Henan Polytechnic University(Natural Science),2017,36(1):7-11.
[2]赵庆彪.奥灰岩溶水害区域超前治理技术研究及应用[J].煤炭学报,2014,39(6):1112-1117.ZHAO Q B. Ordovician limestone karst water disaster regional advanced governance technology study and application[J]. Journal of China Coal Society,2014,39(6):1112-1117.
[3]姚宁平.我国煤矿井下近水平定向钻进技术的发展[J].煤田地质与勘探,2008,36(4):78-91.YAO N P. Development trend of nearly horizontal directional drilling technology in coal mines of China[J].Coal Geology&Exploration,2008,36(4):78-91.
[4]刘子龙,克里斯·弗睿尔,张津平. VLD型定向钻机在大宁矿瓦斯抽采中的应用[J].煤炭科学技术,2006,34(5):34-40.LIU Z L,CHRIS·FREER,ZHAGN J P. VLD directional drilling rigapplied to mine gas drainage in Daning mine[J]. Journal of China Coal Society,2006,34(5):34-40.
[5]王平虎.顺层定向长钻孔预抽瓦斯区域防突技术在特大型突出矿井中的应用[J].矿业安全与环保,2011,38(3):36-38.WANG P H. Application of anti outburst prevention technology in the area of long borehole pre-pumping gas in a large type of outburst mine[J]. Mining Safety&Environmental Protection,2011,38(3):36-38.
[6]河南省人民政府.河南省强化煤矿安全生产暂行规定:豫政[2014]63号[S].郑州:河南省人民政府,2014.HENAN PROVINCIAL PEOPLE’S GOVERMENT.Henan Province strengthens the provisional regulations for safe production of coal mines:Yu Zheng[2014]63[S]. Zhengzhou:Henan Procince People’s Goverment,2014.
[7]赵旭生,孙东玲.定向长钻孔综合抽放瓦斯方法[J].煤炭科学技术,2001,29(3):13-15.ZHAO X S,SUN D L. Comprehensive gas drainage method of directional long borehole[J]. Coal Science and Technology,2001,29(3):13-15.
[8]王兆丰,田富超,赵彬,等.羽状千米长钻孔抽采效果考察试验[J].煤炭学报,2010,35(1):76-79.WANG Z F,TIAN F C,ZHAO B,et al. The testing of gas drainage efficiency about feather-veined 1 000 m length-drillhole[J]. Journal of China Coal Society,2010,35(1):76-79.
[9]刘伟朋.高精度定向钻进技术在煤层气开采中应用研究[D].北京:中国地质大学(北京),2012.LIU W P. Study on application of high-precision directional drilling technology in the CBM[D]. Beijing:China University of Geosciences(Beijing),2012.
[10]王震宇,王佑安.煤层瓦斯含量测定方法评述[J].煤矿安全,2012,43(s1):129-132.WANG Z Y,WANG Y A. Comment on coal seam gas content measurement methods[J]. Safety in Coal Mines,2012,43(s1):129-132.
[11]齐黎明.卸压密闭煤层瓦斯含量测定技术研究[D].北京:中国地质大学(北京),2011.QI L M. Research on the measuring gas content technology of stress-releasing and sealed coal core[D].Beijing:China University of Geosciences(Beijing),2011.
[12]王云刚,鄢桂云,李盟.煤样漏失瓦斯量推算试验研究[J].河南理工大学学报(自然科学版),2013,32(6):658-662+690.WANG Y G,YAN G Y,LI M. Experimental study on calculation of gas lost quantity in coal samples[J].Journal of Henan Polytechnic University(Natural Science),2013,32(6):658-662+690.
[13]周金龙,董洪凯,李国强.顺层定向长钻孔预抽煤层瓦斯区域防突措施效果检验方法研究[J].矿业安全与环保,2013,40(6):69-72.ZHOU J L,DONG H K,LI G Q. Research on effect test method for regional gas pre-drainage measureagainst outburst by directional long boreholes along coal seam[J]. Mining Safety&Environmental Protection,2013,40(6):69-72.
[14]杨宏民,王东洋,陈立伟.煤层注N2置驱瓦斯过程中压力场效应研究[J].河南理工大学学报(自然科学版),2017,36(1):7-11.YANG H M,WANG D Y,CHEN L W. Study on pressure field effect in experiment of displacement methane by nitrogen injection in coalbed[J]. Journal of Henan Polytechnic University(Natural Science),2017,36(1):7-11.
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