半固结砂岩含水层采前预疏降临界水位确定方法
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摘要
基于蒙东地区煤层顶板砂岩含水层群所具有的特殊富水性及半固结性,该区数以亿吨的煤炭资源普遍存在着突水溃砂的危害,对半固结砂岩含水层进行采前预疏降成为这种条件下必需的技术手段,而半固结砂岩含水层采前预疏降安全临界水位的确定,则成为预疏降工程最关键的技术指标。为了实现敏东一矿首采工作面顶板半固结砂岩含水层下的安全开采,分别应用大井解析法与Visual MODFLOW数值模拟法对含水层采前预疏降水位的确定进行研究。研究得出,在工作面排水能力固定的前提下,大井法与数值模拟法确定采前预疏降安全临界水位分别为距离煤层顶板68.4,45.0 m,实际推采数据表明,数值法预计结果与实际情况更为接近。2种方法的研究数据为矿井安全合理地进行疏水采煤提供了重要的科学依据。
Base on the special watery and semi-consolidated of sandstone aquifer of roof in eastern area of inner mongolia,hundred million tons of mine generally has the harm of water and sand inrushing. By pre-drainage before mining operation become the necessary technological means in this situation,and determining the critical groundwater table would become the most crucial technical index. In order to realize the safety mining in the first mining face of Mindong No. 1 Coal Mine,we use big well method and Visual MODFLOW to study the critical groundwater table for pre-drainage before mining operation. The study shows that: the the critical groundwater table for pre-drainage before mining operation respectively is 68. 4 m and 45. 0 m,the actual mining data indicates that the estimated result of numerical simulation is closed to practical situation. The research data of two methods provide important scientific basis for hydrophobic coal mining for coal mine.
Base on the special watery and semi-consolidated of sandstone aquifer of roof in eastern area of inner mongolia,hundred million tons of mine generally has the harm of water and sand inrushing. By pre-drainage before mining operation become the necessary technological means in this situation,and determining the critical groundwater table would become the most crucial technical index. In order to realize the safety mining in the first mining face of Mindong No. 1 Coal Mine,we use big well method and Visual MODFLOW to study the critical groundwater table for pre-drainage before mining operation. The study shows that: the the critical groundwater table for pre-drainage before mining operation respectively is 68. 4 m and 45. 0 m,the actual mining data indicates that the estimated result of numerical simulation is closed to practical situation. The research data of two methods provide important scientific basis for hydrophobic coal mining for coal mine.
引文
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[15]国家安全生产监督管理总局,国家煤矿安全监察局.煤矿防治水规定[M].北京:煤炭工业出版社,2009.
[16]陈崇希,林敏.地下水动力学[M].武汉:中国地质大学出版社,2011.
[17]易立新,徐鹤.地下水数值模拟:GMS应用基础与实例[M].北京:化学工业出版社,2009.
[18]李磊.数值模拟在矿井涌水量预测中的应用[J].煤矿开采,2014,19(3):126-128.Li Lei.Application of numerical simulation in water inflow prediction of mine[J].Coal Mining Technology,2014,19(3):126-128.
[19]蔚东升,刘洁,冯兆东.Visual MODFLOW在国内的应用[J].能源与节能,2014(6):96-97,126.Wei Dongsheng,Liu Jie,Feng Zhaodong.Application of Visual MODFLOW in China[J].Energy and Energy Conservation,2014(6):96-97,126.
[2]冯之前,唐振伟.复杂水文地质条件老空水探放实践[J].中州煤炭,2014(5):69-71.Feng Zhiqian,Tang Zhenwei.Practice of goaf water prospect and outflow under complex[J].Zhongzhou Coal,2014(5):69-71.
[3]天地科技股份有限公司开采设计事业部.铁北煤矿左部首采工作面开采总结[R].北京:天地科技股份有限公司,2012.
[4]天地科技股份有限公司.敏东一矿首采盘区首层开采防治水专项设计[R].北京:天地科技股份有限公司,2014.
[5]天地科技股份有限公司开采设计事业部.朝克乌拉煤矿首采区安全开采论证[R].北京:天地科技股份有限公司,2013.
[6]扎赉诺尔煤业有限责任公司,天地科技股份有限公司开采设计事业部.松软砂岩含水层下综放控水采煤研究鉴定材料[R].北京:天地科技股份有限公司,2007.
[7]宋业杰.顶板含水层采前预疏降安全水位确定方法及应用[J].煤炭科学技术,2017,45(3):161-165.Song Yejie.Method to determine pre-drainage and safety water level in aquifer of roof before mining operation[J].Coal Science and Technology,2017,45(3):161-165.
[8]康永华.我国煤矿特殊地质采矿条件下的顶板水害及其防治技术[C]//全国煤矿复杂难采煤层开采技术,2012.
[9]张国奇,吕晓磊,李东发,等.半固结砂岩含水层下综放开采“两带”高度实测研究[J].煤炭科学技术,2017,45(S1):183-185.Zhang Guoqi,LüXiaolei,Li Dongfa,et al.Height measurement study of fully mechanized top coal caving mining under semi consolidated sandstone aquifer[J].Coal Science and Technology,2017,45(S1):183-185.
[10]刘德旺,王新,穆鹏飞.基于数值模拟预测工作面顶板太灰含水层疏降水量[J].中州煤炭,2016(5):20-22.Liu Dewang,Wang Xin,Mu Pengfei.Prediction of dewatering quantity of Taiyuan Formation limestone aquifer on working face roof based on numerical simulation[J].Zhongzhou Coal,2016(5):20-22.
[11]赵秋阳.白垩系半固结砂岩含水层群下顶疏结合开采技术方法研究[D].北京:煤炭科学研究总院,2015.
[12]吕晓磊,王晓雷,闫顺玺.沙吉海煤矿半固结含水砂岩工程地质特性实验[J].现代矿业,2016(12):194-196,198.LüXiaolei,Wang Xiaolei,Yan Shunxi.Experimental study on engineering geological characteristics of semi consolidated water bearing sandstone in Shajihai Coal Mine[J].Modern Mining,2016(12):194-196,198.
[13]张秀波.弱固结砂岩出砂机理及压裂充填防砂技术研究[D].青岛:中国海洋大学,2014.
[14]王震,娄芳,金世魁,等.砂砾岩含水层下综放开采导水裂隙演化及防治水措施[J].能源与环保,2018,40(1):186-189.Wang Zhen,Lou Fang,Jin Shikui,et al.Evolution of water induced fractures in fully-mechanized caving mining under sandy gravel aquifer and water control measures[J].China Energy and Environmental Protection,2018,40(1):186-189.
[15]国家安全生产监督管理总局,国家煤矿安全监察局.煤矿防治水规定[M].北京:煤炭工业出版社,2009.
[16]陈崇希,林敏.地下水动力学[M].武汉:中国地质大学出版社,2011.
[17]易立新,徐鹤.地下水数值模拟:GMS应用基础与实例[M].北京:化学工业出版社,2009.
[18]李磊.数值模拟在矿井涌水量预测中的应用[J].煤矿开采,2014,19(3):126-128.Li Lei.Application of numerical simulation in water inflow prediction of mine[J].Coal Mining Technology,2014,19(3):126-128.
[19]蔚东升,刘洁,冯兆东.Visual MODFLOW在国内的应用[J].能源与节能,2014(6):96-97,126.Wei Dongsheng,Liu Jie,Feng Zhaodong.Application of Visual MODFLOW in China[J].Energy and Energy Conservation,2014(6):96-97,126.