承压水体上保水采煤注浆材料及技术
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摘要
针对薄隔水层低承压灰岩含水层涌入工作面造成黄河生态湿地水位下降问题,采用数值模拟、现场实测、数理统计等手段综合剖析采动底板破坏带发育规律,并基于室内实验及注浆工业化试验研究了底板黄土高效注浆关键技术。应用结果显示,在底板破坏深度以下注入改性的黄土基浆液可降低矿井涌水量90%以上,其中,黄土基浆液主要由除砂后黄土加入奥灰水中快速搅拌而制得,高强度开采未造成半干旱地区生态湿地进一步退化,生态效益显著。
In terms of the problem of the lowering of water level at Yellow River ecological wetland,which is caused by water inrush into coal working face from the thin aquifuge-low confined water limestone aquifer,this paper used numerical simulation,in-situ measurement and mathematical statistics methods to analyze the development rule of the floor failure in mining,and to study the key technology of loess efficient grouting for coal seam floor based on laboratory experiments and grouting industrial experience. The results show that the mine water inrush will be reduced more than90% by grouting de-sanding-decentralized loess slurry under the depth of floor failure,and the high intensity mining caused no further degradation in semi-arid areas.There is a remarkable ecological benefit to ecological wetland.
In terms of the problem of the lowering of water level at Yellow River ecological wetland,which is caused by water inrush into coal working face from the thin aquifuge-low confined water limestone aquifer,this paper used numerical simulation,in-situ measurement and mathematical statistics methods to analyze the development rule of the floor failure in mining,and to study the key technology of loess efficient grouting for coal seam floor based on laboratory experiments and grouting industrial experience. The results show that the mine water inrush will be reduced more than90% by grouting de-sanding-decentralized loess slurry under the depth of floor failure,and the high intensity mining caused no further degradation in semi-arid areas.There is a remarkable ecological benefit to ecological wetland.
引文
[1]武强,董东林,石占华,等.华北型煤田排-供-生态环保三位一体优化结合研究[J].中国科学(D辑:地球科学),1999,29(6):567-573.Wu Qiang,Dong Donglin,Shi Zhanhua,et al.Row-for-ecological and environmental protection three-in-one combination of the North China type coal field[J].Science in China,1999,29(6):567-573.
[2]王经明.承压水沿煤层底板递进导升突水机理的模拟与观测[J].岩土工程学报,2000,21(9):546-549.Wang Jingming.Measurement and physical analogue on water inrush from coal floor induced by progressive intrusion of artesian water into protective aquiclude[J].Chinese Journal of Geotechnical Engineering,2000,21(9):546-549.
[3]赵铁锤.华北地区奥灰水综合防治技术[M].北京:煤炭工业出版社,2009.
[4]范立民,马雄德,冀瑞君.西部生态脆弱矿区保水采煤研究与实践进展[J].煤炭学报,2015,40(8):1711-1717.Fan Limin,Ma Xiongde,Ji Ruijun.Progress in engineering practice of water-preserved coal mining in western eco-environment frangible area[J].Journal of China Coal Society,2015,40(8):1711-1717.
[5]叶东生,杜飞虎.煤层底板承压含水体上带压开采研究[J].中国煤炭地质,2010,22(11):38-41.Ye Dongsheng,Du Feihu.Mining under safe water pressure of coal floor confined aquifer[J].Coal Geology of China,2010,22(11):38-41.
[6]陈振国,徐润,高岗荣.钻井废弃泥浆用作注浆材料的研究[J].煤炭学报,2011,36(1):49-53.Chen Zhenguo,Xu Run,Gao Gangrong.Research on waste drilling mud being used in grouting[J].Journal of China Coal Society,2011,36(1):49-53.
[7]王双明,黄庆享,范立民,等.生态脆弱区煤炭开发与生态水位保护[M].北京:科学出版社,2010.
[8]王双明,黄庆享,范立民,等.生态脆弱矿区含(隔)水层特征及保水开采分区研究[J].煤炭学报,2010,35(1):7-14.Wang Shuangming,Huang Qingxiang,Fan Limin,et al.Study on overburden aquclude and water protection mining regionazation in the ecological fragile mining area[J].Journal of China Coal Society,2010,35(1):7-14.
[9]范立民.论保水采煤问题[J].煤田地质与勘探,2005,33(5):50-53.Fan Limin.Discussing on coal mining under water-containing condition[J].Coal Geology&Exploration,2005,33(5):50-53.
[10]李文平,叶贵钧,张莱,等.陕北榆神府矿区保水采煤工程地质条件研究[J].煤炭学报,2000,25(5):449-454.Li Wenping,Ye Guijun,Zhang Lai,et al.Study on the engineering geological condition of protected water resouces during coal mining action in Yu-Shen-Fu Mine Area in the North Shaanxi Province[J].Journal of China Coal Society,2000,25(5):449-454.
[11]黄庆享,蔚保宁,张文忠.浅埋煤层黏土隔水层下行裂隙弥合研究[J].采矿与安全工程学报,2010,27(1):35-39.Huang Qingxiang,Wei Baoning,Zhang Wenzhong.Study of downward crack closing of clay aquiclude in shallowly buried coal seam[J].Journal of Mining&Safety Engineering,2010,27(1):35-39.
[12]李涛,王苏健,李文平,等.沙漠浅滩地表径流保水煤柱留设生态意义及方法[J].采矿与安全工程学报,2016,33(1):134-139.Li Tao,Wang Sujian,Li Wenping,et al.Ecological significance and method to design protective coal pillar on surface runoff in desert shoal area[J].Journal of Mining&Safety Engineering,2016,33(1):134-139.
[13]范立民,马雄德,蒋辉,等.西部生态脆弱矿区矿井突水溃沙危险性分区[J].煤炭学报,2016,41(3):531-536.Fan Limin,Ma Xiongde,Jiang Hui,et al.Risk evaluation on water and sand inrush in ecologically fragile coal mine[J].Journal of China Coal Society,2016,41(3):531-536.
[14]段宏飞.煤矿底板采动变形及带压开采突水评判方法研究[D].徐州:中国矿业大学,2012.
[2]王经明.承压水沿煤层底板递进导升突水机理的模拟与观测[J].岩土工程学报,2000,21(9):546-549.Wang Jingming.Measurement and physical analogue on water inrush from coal floor induced by progressive intrusion of artesian water into protective aquiclude[J].Chinese Journal of Geotechnical Engineering,2000,21(9):546-549.
[3]赵铁锤.华北地区奥灰水综合防治技术[M].北京:煤炭工业出版社,2009.
[4]范立民,马雄德,冀瑞君.西部生态脆弱矿区保水采煤研究与实践进展[J].煤炭学报,2015,40(8):1711-1717.Fan Limin,Ma Xiongde,Ji Ruijun.Progress in engineering practice of water-preserved coal mining in western eco-environment frangible area[J].Journal of China Coal Society,2015,40(8):1711-1717.
[5]叶东生,杜飞虎.煤层底板承压含水体上带压开采研究[J].中国煤炭地质,2010,22(11):38-41.Ye Dongsheng,Du Feihu.Mining under safe water pressure of coal floor confined aquifer[J].Coal Geology of China,2010,22(11):38-41.
[6]陈振国,徐润,高岗荣.钻井废弃泥浆用作注浆材料的研究[J].煤炭学报,2011,36(1):49-53.Chen Zhenguo,Xu Run,Gao Gangrong.Research on waste drilling mud being used in grouting[J].Journal of China Coal Society,2011,36(1):49-53.
[7]王双明,黄庆享,范立民,等.生态脆弱区煤炭开发与生态水位保护[M].北京:科学出版社,2010.
[8]王双明,黄庆享,范立民,等.生态脆弱矿区含(隔)水层特征及保水开采分区研究[J].煤炭学报,2010,35(1):7-14.Wang Shuangming,Huang Qingxiang,Fan Limin,et al.Study on overburden aquclude and water protection mining regionazation in the ecological fragile mining area[J].Journal of China Coal Society,2010,35(1):7-14.
[9]范立民.论保水采煤问题[J].煤田地质与勘探,2005,33(5):50-53.Fan Limin.Discussing on coal mining under water-containing condition[J].Coal Geology&Exploration,2005,33(5):50-53.
[10]李文平,叶贵钧,张莱,等.陕北榆神府矿区保水采煤工程地质条件研究[J].煤炭学报,2000,25(5):449-454.Li Wenping,Ye Guijun,Zhang Lai,et al.Study on the engineering geological condition of protected water resouces during coal mining action in Yu-Shen-Fu Mine Area in the North Shaanxi Province[J].Journal of China Coal Society,2000,25(5):449-454.
[11]黄庆享,蔚保宁,张文忠.浅埋煤层黏土隔水层下行裂隙弥合研究[J].采矿与安全工程学报,2010,27(1):35-39.Huang Qingxiang,Wei Baoning,Zhang Wenzhong.Study of downward crack closing of clay aquiclude in shallowly buried coal seam[J].Journal of Mining&Safety Engineering,2010,27(1):35-39.
[12]李涛,王苏健,李文平,等.沙漠浅滩地表径流保水煤柱留设生态意义及方法[J].采矿与安全工程学报,2016,33(1):134-139.Li Tao,Wang Sujian,Li Wenping,et al.Ecological significance and method to design protective coal pillar on surface runoff in desert shoal area[J].Journal of Mining&Safety Engineering,2016,33(1):134-139.
[13]范立民,马雄德,蒋辉,等.西部生态脆弱矿区矿井突水溃沙危险性分区[J].煤炭学报,2016,41(3):531-536.Fan Limin,Ma Xiongde,Jiang Hui,et al.Risk evaluation on water and sand inrush in ecologically fragile coal mine[J].Journal of China Coal Society,2016,41(3):531-536.
[14]段宏飞.煤矿底板采动变形及带压开采突水评判方法研究[D].徐州:中国矿业大学,2012.