深部软岩巷道交叉点耦合注浆加固机理及应用
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摘要
针对韩咀煤业2煤西翼辅运大巷与新掘巷道交叉点位置巷道围岩破碎、底鼓严重的现象,提出了"深浅孔、高低压"耦合注浆加固方法,阐述了耦合注浆加固机理,改善了传统注浆加固方法,从根本上提高了巷道围岩的整体性,改善围岩受力状态,提高了其承载力。现场实践表明:采用"深浅孔、高低压"耦合注浆加固方法对巷道进行加固,极大的改善了围岩受力状态,有效的控制了巷道变形及底鼓,实现了对巷道的长期稳定控制。
Aimed at the phenomenon that the surrounding rock of the roadway is broken and the floor heave is serious at the crossing of 2# coal west wing auxiliary roadway and new roadways in the Hanzui mine. The method of shallow hole low pressure and deep hole high pressure coupling grouting was used to control the roadway deformation, and the strengthening mechanism of coupling grouting was stated.This method is improved based on the traditional grouting method, and the integrity of surrounding rock has been fundamentally improved.Moreover, it improved the stress state and increased bearing capacity of surrounding rock. The field practice shows that this method greatly improves the stress state of surrounding rock, effectively controls the deformation and floor heave of the roadway, and achieves long-term stability control of the roadway.
Aimed at the phenomenon that the surrounding rock of the roadway is broken and the floor heave is serious at the crossing of 2# coal west wing auxiliary roadway and new roadways in the Hanzui mine. The method of shallow hole low pressure and deep hole high pressure coupling grouting was used to control the roadway deformation, and the strengthening mechanism of coupling grouting was stated.This method is improved based on the traditional grouting method, and the integrity of surrounding rock has been fundamentally improved.Moreover, it improved the stress state and increased bearing capacity of surrounding rock. The field practice shows that this method greatly improves the stress state of surrounding rock, effectively controls the deformation and floor heave of the roadway, and achieves long-term stability control of the roadway.
引文
[1]孙晓明,何满朝.深部开采软岩巷道耦合支护数值模拟研究[J].中国矿业大学学报,2017,34(2):167-169.
[2]谢生荣,谢国强,何尚森,等.深部软岩巷道锚喷注强化承压拱支护机理及其应用[J].煤炭学报,2014,39(3):404-409.
[3]牛双建,靖洪文,张忠宇,等.深部软岩巷道围岩稳定性控制技术研究与应用[J].煤炭学报,2011,36(6):914-919.
[4]靳俊恒,孟祥瑞,高召宁.高应力破碎软岩巷道锚注加固数值模拟研究[J].煤矿安全,2011,40(4);150-152.
[5]梁超,陈苗虎.弱黏结复合顶板回采巷道围岩变形与加固技术[J].煤矿安全,2017,48(2):93-96.
[6]李为腾,李术才,玄超,等.高应力软岩巷道支护失效机制及控制研究[J].岩石力学与工程学报,2015,34(9):1836-1848.
[7]何富连,张广超.深部破碎软岩巷道围岩稳定性分析及控制[J].岩土力学,2015,36(5):1397-1406.
[8]张农,王保贵,郑西贵,等.千米深井软岩巷道二次支护中的注浆加固效果分析[J].煤炭科学技术,2010,38(5):34-38.
[9]王浩.回采巷道松软破碎围岩注浆加固与支护技术研究[D].中国矿业大学,2008.
[10]陈城,韩立军,张后全,等.破碎软岩斜井巷道锚网喷注耦合支护技术[J].采矿与安全工程学报,2009,26(3):288-291.
[11]孟庆彬,韩立军,乔卫国,等.深部软岩巷道锚注支护机理数值模拟研究[J].采矿与安全工程学报,2016,33(1):27-34.
[12]王连国,陆银龙,黄耀光,等.深部软岩巷道深-浅耦合全断面锚注支护研究[J].中国矿业大学学报,2016,45(1):11-18.
[2]谢生荣,谢国强,何尚森,等.深部软岩巷道锚喷注强化承压拱支护机理及其应用[J].煤炭学报,2014,39(3):404-409.
[3]牛双建,靖洪文,张忠宇,等.深部软岩巷道围岩稳定性控制技术研究与应用[J].煤炭学报,2011,36(6):914-919.
[4]靳俊恒,孟祥瑞,高召宁.高应力破碎软岩巷道锚注加固数值模拟研究[J].煤矿安全,2011,40(4);150-152.
[5]梁超,陈苗虎.弱黏结复合顶板回采巷道围岩变形与加固技术[J].煤矿安全,2017,48(2):93-96.
[6]李为腾,李术才,玄超,等.高应力软岩巷道支护失效机制及控制研究[J].岩石力学与工程学报,2015,34(9):1836-1848.
[7]何富连,张广超.深部破碎软岩巷道围岩稳定性分析及控制[J].岩土力学,2015,36(5):1397-1406.
[8]张农,王保贵,郑西贵,等.千米深井软岩巷道二次支护中的注浆加固效果分析[J].煤炭科学技术,2010,38(5):34-38.
[9]王浩.回采巷道松软破碎围岩注浆加固与支护技术研究[D].中国矿业大学,2008.
[10]陈城,韩立军,张后全,等.破碎软岩斜井巷道锚网喷注耦合支护技术[J].采矿与安全工程学报,2009,26(3):288-291.
[11]孟庆彬,韩立军,乔卫国,等.深部软岩巷道锚注支护机理数值模拟研究[J].采矿与安全工程学报,2016,33(1):27-34.
[12]王连国,陆银龙,黄耀光,等.深部软岩巷道深-浅耦合全断面锚注支护研究[J].中国矿业大学学报,2016,45(1):11-18.