深井厚煤层开采水害危险分析
|
摘要
巨野煤田某矿4301工作面埋深大于800 m,煤层厚度大,为了研究回采过程中水害影响,首先分析工作面顶板沉积组合结构,采用可控源音频大地电磁法勘探顶板含水层,然后用UDEC软件进行覆岩变形破坏数值模拟分析。得出工作面导水裂隙带最大发育高度约100 m,裂采比11.12,导水裂隙不会波及基岩顶部砂含5,经疏放水后可进行安全回采。
The depth of 4301 working face of a mine in Juye coalfield is more than 800 m, and the thickness of coal seam is large. In order to study the influence of water damage in the mining process,the roof sedimentary assemblage of the working face is analyzed first, and the roof aquifer is explored by CSAMT method. Then carry out numerical simulation by using UDEC software to analysis of overlying strata deformation and failure. It is concluded that the maximum development height of water flowing fractured zone is about 100 m and the ratio of split to production is 11.12. The water flowing fractured will not affect the top sand aquifer 5 and can be safely mined after draining.
The depth of 4301 working face of a mine in Juye coalfield is more than 800 m, and the thickness of coal seam is large. In order to study the influence of water damage in the mining process,the roof sedimentary assemblage of the working face is analyzed first, and the roof aquifer is explored by CSAMT method. Then carry out numerical simulation by using UDEC software to analysis of overlying strata deformation and failure. It is concluded that the maximum development height of water flowing fractured zone is about 100 m and the ratio of split to production is 11.12. The water flowing fractured will not affect the top sand aquifer 5 and can be safely mined after draining.
引文
[1]罗时金,王新丰,刘锋,等.深井开采面临的关键问题及技术对策[J].煤炭技术,2014,33(11):309-311.
[2]张勤,刘伟韬,黄启铭.大采深厚煤层综放采场导水裂缝带数值模拟研究[J].煤炭技术,2017,36(9):162-164.
[3]谢和平,高峰,鞠杨.深部岩体力学研究与探索[J].岩石力学与工程学报,2015,34(11):2 161-2 178.
[4]孙广京,朱斯陶,姜福兴,等.深井特厚煤层工作面强烈动压区安全开采技术[J].煤炭学报,2015,40(S1):12-18.
[5]国家煤炭工业局.建筑物、水体、铁路及主要井巷煤柱留设与压煤开采规程[S].北京:煤炭工业出版社,2000.
[6]胡善政.可控源音频大地电磁法三维数值模拟研究[D].北京:中国地质大学(北京),2006.
[7]高保彬,高佳佳,袁东升.基于UDEC的大采高覆岩破裂的模拟与分析[J].湖南科技大学学报:自然科学版,2013,28(2):1-6.
[8]郝志勇,林柏泉,张家山,等.基于UDEC的保护层开采中覆岩移动规律的数值模拟与分析[J].中国矿业,2007(7):81-84.
[2]张勤,刘伟韬,黄启铭.大采深厚煤层综放采场导水裂缝带数值模拟研究[J].煤炭技术,2017,36(9):162-164.
[3]谢和平,高峰,鞠杨.深部岩体力学研究与探索[J].岩石力学与工程学报,2015,34(11):2 161-2 178.
[4]孙广京,朱斯陶,姜福兴,等.深井特厚煤层工作面强烈动压区安全开采技术[J].煤炭学报,2015,40(S1):12-18.
[5]国家煤炭工业局.建筑物、水体、铁路及主要井巷煤柱留设与压煤开采规程[S].北京:煤炭工业出版社,2000.
[6]胡善政.可控源音频大地电磁法三维数值模拟研究[D].北京:中国地质大学(北京),2006.
[7]高保彬,高佳佳,袁东升.基于UDEC的大采高覆岩破裂的模拟与分析[J].湖南科技大学学报:自然科学版,2013,28(2):1-6.
[8]郝志勇,林柏泉,张家山,等.基于UDEC的保护层开采中覆岩移动规律的数值模拟与分析[J].中国矿业,2007(7):81-84.