极近距离特厚煤层顶板水压致裂技术应用
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摘要
为保证白洞井极近距离特厚煤层5~#煤层8107工作面顺利推出上覆3~#煤层实体煤工作面,避免出现压架事故及巷道变形冒顶灾害,利用水压致裂技术成功弱化上覆3~#煤层煤柱及砾岩老顶,降低了采动压力,保证了5~#煤层8107工作面顺利回采。
In order to ensure the production of 8107 work face of the very thick No.5 coal seam with very little distance from the underlying No.3 coal seam in Baidong well, avoiding the pressure frame accident and the roadway deformation roof disaster, the hydraulic fracturing technology was used to weaken the overlying No.3 coal seam and conglomerate strata. The result shows that hydraulic fracturing process has successfully reduced the mining pressure and ensured the safely production of 8107 working face.
In order to ensure the production of 8107 work face of the very thick No.5 coal seam with very little distance from the underlying No.3 coal seam in Baidong well, avoiding the pressure frame accident and the roadway deformation roof disaster, the hydraulic fracturing technology was used to weaken the overlying No.3 coal seam and conglomerate strata. The result shows that hydraulic fracturing process has successfully reduced the mining pressure and ensured the safely production of 8107 working face.
引文
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[2]于斌,刘长友,杨敬轩,等.大同矿区双系煤层开采煤柱影响下的强矿压显现机制[J].煤炭学报,2014,39(1):40-46.
[3]谢广祥,杨科,刘全明.综放面倾向煤柱支承压力分布规律研究[J].岩石力学与工程学报,2006,25(3):545-549.
[4]宋选民,连清旺,邢平伟,等.采空区顶板大面积垮落的空气冲击灾害研究[J].煤炭科学技术,2009,37(4):1-4.
[5]黄炳香,王友壮.顶板钻孔割缝导向水压裂缝扩展的现场试验[J].煤炭学报,2015,40(9):2 002-2 008.
[6]刘长友,黄炳香,孟祥军,等.超长孤岛综放工作面支承压力分布规律研究[J].岩石力学与工程学报,2007,26(S1):2 671-2 676.