大埋深软弱泥岩巷道支护方式应用研究
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摘要
埋深890 m的陈四楼煤矿九采区回风下山下平巷穿过陈四楼煤矿向斜轴部,掘进过程中揭露3条落差分别为5,7,7 m的XF2、XF3及XF5正断层,周边巷道空间关系复杂,采用"锚网喷+锚索"方式支护时巷道变形严重,已无法满足生产需要。为解决巷道失修难题,提出了采用"锚网索+U型钢棚+注浆"的复合支护方案,并对底板采取"锚网带+注浆锚索"加固。实践结果表明,该方案支护效果良好,巷道变形得到了很好的控制,可以满足安全使用要求。
In the ninth mining area of Chensilou Coal Mine with a depth of 890 m,the downhill drift under the return air passes through the syncline axis of Chensilou Coal Mine.Three normal faults with a drop of 5,7,7 m,XF2,XF3 and XF5 are exposed in the excavation process.The spatial relationship of surrounding roadways is complex.The roadways are seriously deformed when supported by "anchor net shotcrete + anchor cable",which can no longer meet the production needs.In order to solve the problem of roadway failure,a composite support scheme of "anchor net cable+ U-shaped steel shed+ grouting" is proposed,and "anchor net belt+ grouting anchor rope" is adopted to reinforce the bottom plate.The practical results show that the scheme has good supporting effect and the roadway deformation is well controlled,which can be used safely.
In the ninth mining area of Chensilou Coal Mine with a depth of 890 m,the downhill drift under the return air passes through the syncline axis of Chensilou Coal Mine.Three normal faults with a drop of 5,7,7 m,XF2,XF3 and XF5 are exposed in the excavation process.The spatial relationship of surrounding roadways is complex.The roadways are seriously deformed when supported by "anchor net shotcrete + anchor cable",which can no longer meet the production needs.In order to solve the problem of roadway failure,a composite support scheme of "anchor net cable+ U-shaped steel shed+ grouting" is proposed,and "anchor net belt+ grouting anchor rope" is adopted to reinforce the bottom plate.The practical results show that the scheme has good supporting effect and the roadway deformation is well controlled,which can be used safely.
引文
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[12] 许波,杨蔡君.U型棚+围岩注浆技术在巷道修复中的应用实践[J].安徽建筑大学学报,2008,16(6):21-23. Xu bo,Yang Caijun.Application of U-shaped shed+surrounding rock grouting technique in roadway repair[J].Journal of Anhui Architecture University,2008,16(6):21-23.
[13] 张农.巷道滞后注浆围岩控制理论与实践[M].徐州:中国矿业大学出版社,2004.
[14] 蔡林,刘备峰.浅析注浆加固技术在破碎围岩巷道中的应用[J].建筑工程技术与设计,2017(12):859,938.Cai Lin,Liu Beifeng.Application of grouting reinforcement technique in the roadway of broken surrounding rock[J].Architectural Engineering Technology and Design,2017(12):859,938.
[15] 刘志,徐颖,孙康,等.中空注浆锚索在深部软岩巷道支护中的应用[J].煤炭技术,2017(5):66-67.Liu Zhi,Xu Ying,Sun Kang,et al.Application of hollow grouting anchor cable in deep soft rock roadway support[J].Coal Technology,2017(5):66-67.
[16] 肖长春.中空注浆锚杆在潘一矿东井软岩巷道中的应用[J].建井技术,2014(S1):84-86.Xiao Changchun.Application of hollow grouting bolt to mine soft rock roadway in east mine of Panji No.1 Mine[J].Mine Construction Technology,2014(S1):84-86.
[2] 常聚才,谢广祥.深部巷道围岩力学特征及其稳定性控制[J].煤炭学报,2009(7):881-886.Chang Jucai,Xie Guangxiang.Mechanical characteristics and stability control of surrounding rock in deep tunnel[J].Journal of China Coal Society,2009(7):881-886.
[3] 倪兴华.地应力研究与应用[M].北京:煤炭工业出版社,2007.
[4] 董方庭,宋宏伟,郭志宏,等.巷道围岩松动圈支护理论[J].煤炭学报,1994,19(1):21-32.Dong Fangting,Song Hongwei,Guo Zhihong,et al.Theory of loose circle support of surrounding rock of roadway[J].Journal of China Coal Society,1994,19(1):21-32.
[5] 王同旭,麻洪蕊.巷道支护力作用及影响因素分析[J].山东科技大学学报(自然科学版),2009,28(4):40-42.Wang Tongxu,Ma Hongrui.Analysis on supporting force of roadway and influencing factors[J].Journal of Shandong University of Science and Technology(Natural Science),2009,28(4):40-42.
[6] 蔺宏,吴志强,高明坤.向斜轴部高压力区巷道支护技术的研究与治理[J].山东煤炭科技,2012(1):139-140.Lin Hong,Wu Zhiqiang,Gao Mingkun.Research and governance of roadway support technology in the high pressure area of oblique axis section[J].Shandong Coal Technology,2012(1):139-140.
[7] 陈强威.向斜轴部高应力淋水巷道综合支护技术实践[J].煤炭工程,2009(10):28-30.Chen Qiangwei.Practice of integrated support technology for high stress wet roadway in oblique axis section[J].Coal Engineering,2009(10):28-30.
[8] 刘泉声,张华,林涛.煤矿深部岩巷稳定与支护对策[J].岩石力学与工程学报,2004,23(21):3732-3737.Liu Quansheng,Zhang Hua,Lin Tao.Stabilization and supporting measures of deep mine rock roadway in coal mine[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(21):3732-3737.
[9] 何满潮,袁和生,靖洪文,等.中国煤矿锚杆支护理论与实践[M].北京:科技出版社,2004.
[10] 康红普,王金华,林健.高预应力强力支护系统及其在深部巷道中的应用[J].煤炭学报,2007,32(12):1233-1238.Kang Hongpu,Wang Jinhua,Lin Jian.High prestressing strength support system and its application in deep roadways[J].Journal of China Coal Society,2007,32(12):1233-1238.
[11] 康红普,林健,吴拥政.全断面高预应力强力锚索支护技术及其在动压巷道中的应用[J].煤炭学报,2009,34(9):1153-1159.Kang Hongpu,Lin Jian,Wu Yongzheng.The high prestressed anchor cable support technology and its application in dynamic pressure roadway[J].Journal of China Coal Society,2009,34(9):1153-1159.
[12] 许波,杨蔡君.U型棚+围岩注浆技术在巷道修复中的应用实践[J].安徽建筑大学学报,2008,16(6):21-23. Xu bo,Yang Caijun.Application of U-shaped shed+surrounding rock grouting technique in roadway repair[J].Journal of Anhui Architecture University,2008,16(6):21-23.
[13] 张农.巷道滞后注浆围岩控制理论与实践[M].徐州:中国矿业大学出版社,2004.
[14] 蔡林,刘备峰.浅析注浆加固技术在破碎围岩巷道中的应用[J].建筑工程技术与设计,2017(12):859,938.Cai Lin,Liu Beifeng.Application of grouting reinforcement technique in the roadway of broken surrounding rock[J].Architectural Engineering Technology and Design,2017(12):859,938.
[15] 刘志,徐颖,孙康,等.中空注浆锚索在深部软岩巷道支护中的应用[J].煤炭技术,2017(5):66-67.Liu Zhi,Xu Ying,Sun Kang,et al.Application of hollow grouting anchor cable in deep soft rock roadway support[J].Coal Technology,2017(5):66-67.
[16] 肖长春.中空注浆锚杆在潘一矿东井软岩巷道中的应用[J].建井技术,2014(S1):84-86.Xiao Changchun.Application of hollow grouting bolt to mine soft rock roadway in east mine of Panji No.1 Mine[J].Mine Construction Technology,2014(S1):84-86.