神府矿区大型水库周边浅埋煤层开采水害防治技术
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摘要
以神府矿区大型水库常家沟水库为例,运用水文地质勘探、钻孔实测、理论计算、数值模拟等手段,查明了常家沟水库周边水文地质条件,拟合得出导水裂隙带高度计算公式,开展了大型水库周边浅埋煤层开采水害问题防治技术研究。研究结果表明:研究区水库周边煤层开采导水裂隙带预计发育高度约为72.8 m,常家沟水库周边煤层开采存在的水害主要包括烧变岩涌(突)水问题、萨拉乌苏组突水溃沙问题、常家沟水库倒灌水害等问题,针对常家沟水库浅埋煤层开采不同水害问题,提出了留设保护煤柱、帷幕注浆与井下探放水疏放、井下探放水与地面抽排联合疏放、上覆煤层采空区积水探查与疏放、沟道裂缝填埋等水害防治技术。水库周边15207工作面回采时,在留设保护煤柱的基础上,采取帷幕注浆625 m,施工疏放4-2煤烧变岩积水钻孔28个,累计放水量33 523 m3,保障了工作面安全回采。
Taking the large Changjiagou reservoir in Shenfu coal mine as an example,using hydro-geological exploration,drill hole measurement,theoretical calculation and numerical simulation,the hydrogeological conditions in the vicinity of Changjiagou reservoir were investigated.A formula of the height of water flowing fractured zone was put forward.Also,this paper studied the prevention and controlling technology of the coal seam mining for the vicinity of Changjiagou reservoir.The result shows that the height of water flowing fractured zone is about 72.8 m,which mainly include the burnt rocks water inrush,Salawusu formation water-sand inrush,and Changjiagou reservoir water inrush.The water disaster problems surrounding Changjiagou reservoir mainly include the burnt rocks water inrush,Salawusu formation water-sand inrush,Changjiagou reservoir water inrush during mining. Based on the water inrush,the water control measures were put forward,which are coal protection pillar reserved,the curtain grouting and drainage underground,the wa-ter exploration-drainage underground combined with the drainage ground,the exploration and drainage of the goaf water overlying the coal seam,the channel cracks buried.During the 15207 working face mining,there were 28 boreholes drilled in the 4-2 coal burnt hydrothermal rock,and the curtain grouting was 625 m,the cumulative water discharge was33 523 m3 based on coal protection pillar reserved.
Taking the large Changjiagou reservoir in Shenfu coal mine as an example,using hydro-geological exploration,drill hole measurement,theoretical calculation and numerical simulation,the hydrogeological conditions in the vicinity of Changjiagou reservoir were investigated.A formula of the height of water flowing fractured zone was put forward.Also,this paper studied the prevention and controlling technology of the coal seam mining for the vicinity of Changjiagou reservoir.The result shows that the height of water flowing fractured zone is about 72.8 m,which mainly include the burnt rocks water inrush,Salawusu formation water-sand inrush,and Changjiagou reservoir water inrush.The water disaster problems surrounding Changjiagou reservoir mainly include the burnt rocks water inrush,Salawusu formation water-sand inrush,Changjiagou reservoir water inrush during mining. Based on the water inrush,the water control measures were put forward,which are coal protection pillar reserved,the curtain grouting and drainage underground,the wa-ter exploration-drainage underground combined with the drainage ground,the exploration and drainage of the goaf water overlying the coal seam,the channel cracks buried.During the 15207 working face mining,there were 28 boreholes drilled in the 4-2 coal burnt hydrothermal rock,and the curtain grouting was 625 m,the cumulative water discharge was33 523 m3 based on coal protection pillar reserved.
引文
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[15]王苏健,黄克军,邓增社,等.陕北侏罗纪煤田6.0 m煤层大采高开采导水裂隙带发育特征研究[A].中国煤炭学会.第十届全国采矿学术会议论文集——专题一:采矿与井巷工程[C].北京:中国煤炭学会,2015:133-139.
[16]王苏健,陈通,黄克军,等.浅埋煤层大采高工作面开采导水裂隙带演化特征及发育高度研究[A].段中会编.煤矿隐蔽致灾因素及探査技术研究——陕西省煤炭学会学术年会论文集[C].北京:煤炭工业出版社,2015:145-148.
[17]范立民,马雄德.浅埋煤层矿井突水溃沙灾害研究进展[J].煤炭科学技术,2016,44(1):8-12.FAN Limin,MA Xiongde.Research progress of water inrush hazard in shallow buried coal seam mine[J].Coal Science and Technology,2016,44(1):8-12.
[18]黄克军,陈通,曹新奇,等.浅埋煤层群水库周边开采保护煤柱留设研究[J].煤炭技术,2014,33(11):149-151.HUANG Kejun,CHEN Tong,CAO Xinqi,et al.Research of protection coal pillars in shallow buried coal seams around reservoir[J].Coal Technology,2014,33(11):149-151.
[19]苗彦平,黄克军,曹新奇,等.浅埋煤层开采水库周边保护煤柱合理留设研究[J].中国煤炭,2015,41(2):58-62.MIAO Yanping,HUANG Kejun,CAO Xinqi,et al.Research on reasonable design of protective coal pillars around reservoir in shallow coal seam[J].China Coal,2015,41(2):58-62.
[2]靳德武.我国煤矿水害防治技术新进展及其方法论思考[J].煤炭科学技术,2017,45(5):141-147.JIN Dewu.New development of water disaster prevention and control technology in China coal mine and consideration on methodology[J].Coal Science and Technology,2017,45(5):141-147.
[3]武强.我国矿井水防控与资源化利用的研究进展、问题和展望[J].煤炭学报,2014,39(5):795-805.WU Qiang.Progress,problems and prospects of prevention and control technology of mine water and reutilization in China[J].Journal of China Coal Society,2014,39(5):795-805.
[4]顾大钊.能源“金三角”煤炭开发水资源保护与利用[M].北京:科学出版社,2012.
[5]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 aquiclude and water protection mining regionazation in the ecological fragile mining area[J].Journal of China Coal Society,2010,35(1):7-14.
[6]范立民.保水采煤的科学内涵[J].煤炭学报,2017,42(1):27-35.FAN Limin.Scientific connotation of water-preserved mining[J].Journal of China Coal Society,2017,42(1):27-35.
[7]范立民.西北高强度采煤区保水采煤研究现状[J].中国煤炭地质,2017,29(3):44-49.FAN Limin.Water-preserved mining status quo in northwest china intensively coal exploited area[J].Coal Geology of China,2017,29(3):44-49.
[8]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 significanceand method to design protective coal pillar on surface runoff in desertshoal area[J].Journal of Mining&Safety Engineering,2016,33(1):134-139.
[9]李涛.陕北煤炭大规模开采含隔水层结构变异及水资源动态研究[D].徐州:中国矿业大学,2012.
[10]武雄,汪小刚,段庆伟,等.大型水库库区下压煤开采对其安全影响评价[J].中国矿业大学学报,2007,36(6):723-727.WU Xiong,WANG Xiaogang,DUAN Qingwei,et al.Evaluation of safety of mining under large reservoir area[J].Journal of China University of Mining&Technology,2007,36(6):723-727.
[11]郭文兵,邵强,尹士献,等.水库下采煤的安全性分析[J].采矿与安全工程学报,2006,23(3):324-328.GUO Wenbing,SHAO Qiang,YIN Shixian,et al.Analysis of the securityof mining under a reservoir[J].Journal of Mining&Safety Engineering,2006,23(3):324-328.
[12]陈俊杰,郭文兵,邹友峰.大型水体下顶水安全开采的可行性研究[J].中国安全科学学报,2011,21(2):57-62.CHEN Junjie,GUO Wenbing,ZOU Youfeng.Feasibility study on safe mining under large-scale water bodies[J].China Safety Science Journal,2011,21(2):57-62.
[13]戴华阳,廖孟光,孟宪营,等.峰峰矿区九龙矿水库下采煤安全性分析[J].煤炭学报,2014,39(12):295-230.DAI Huayang,LIAO Mengguang,MENG Xianying,et al.Analysis of the security of mining under the reservoir in Jiulong Coal Mine of Fengfeng mining area[J].Journal of China Coal Society,2014,39(12):295-230.
[14]国家安监总局.建筑物,水体,铁路及主要井巷煤柱留设与压煤开采规范[M].北京:煤炭工业出版社,2017.
[15]王苏健,黄克军,邓增社,等.陕北侏罗纪煤田6.0 m煤层大采高开采导水裂隙带发育特征研究[A].中国煤炭学会.第十届全国采矿学术会议论文集——专题一:采矿与井巷工程[C].北京:中国煤炭学会,2015:133-139.
[16]王苏健,陈通,黄克军,等.浅埋煤层大采高工作面开采导水裂隙带演化特征及发育高度研究[A].段中会编.煤矿隐蔽致灾因素及探査技术研究——陕西省煤炭学会学术年会论文集[C].北京:煤炭工业出版社,2015:145-148.
[17]范立民,马雄德.浅埋煤层矿井突水溃沙灾害研究进展[J].煤炭科学技术,2016,44(1):8-12.FAN Limin,MA Xiongde.Research progress of water inrush hazard in shallow buried coal seam mine[J].Coal Science and Technology,2016,44(1):8-12.
[18]黄克军,陈通,曹新奇,等.浅埋煤层群水库周边开采保护煤柱留设研究[J].煤炭技术,2014,33(11):149-151.HUANG Kejun,CHEN Tong,CAO Xinqi,et al.Research of protection coal pillars in shallow buried coal seams around reservoir[J].Coal Technology,2014,33(11):149-151.
[19]苗彦平,黄克军,曹新奇,等.浅埋煤层开采水库周边保护煤柱合理留设研究[J].中国煤炭,2015,41(2):58-62.MIAO Yanping,HUANG Kejun,CAO Xinqi,et al.Research on reasonable design of protective coal pillars around reservoir in shallow coal seam[J].China Coal,2015,41(2):58-62.
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