复杂条件下软岩巷道底鼓综合治理技术研究与应用
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摘要
陈四楼煤矿北翼-640 m轨道暗斜井在巷道掘进过程中受落差163m的F_(18)正断层影响,巷道由断层下盘的泥岩、砂质泥岩层位进入断层上盘的K_5砂岩层位施工,岩层破碎,应力集中,巷道底板持续变形严重,针对陈四楼煤矿北翼-640 m轨道暗斜井巷道底鼓持续变形的现象,基于巷道围岩变形机理、松动圈理论、围岩加固理论,通过理论分析、现场试验、矿压观测等手段,提出了复杂条件下软岩巷道底鼓综合治理技术,即:采用"注浆+锚网(钢带)+中空注浆锚索注浆(锚索梁)+混凝土浇筑"的联合底鼓治理技术,有效改善围岩力学性质,提高锚杆锚固基础。现场工程实践表明,该套软岩巷道底鼓综合治理技术有效控制了巷道变形,确保了巷道安全生产使用要求,支护效果明显,对治理软岩巷道底板反复变形和矿井的长期高效安全生产建设具有重大的意义。
The north wing-640 m track dark inclined shaft of the Chensilou Coal Mine was affected by the F_(18) normal fault with a drop of 163 m during the roadway excavation. The roadway was separated from the fault bed by the mudstone and sandy mudstone layer of the fault. K_5 sandstone layer construction,rock stratum fracture,stress concentration,continuous deformation of roadway floor,for the continuous deformation of the bottom drum of the 640 m track dark inclined shaft in the north wing of Chensilou Coal Mine,based on the surrounding rock deformation mechanism and loose circle theory of surrounding rock reinforcement,through theoretical analysis,field test,mine pressure observation and other means,put forward the comprehensive treatment technology of soft rock roadway bottom drum under complex conditions,namely: using grouting + anchor net(steel strip) + hollow grouting combined bottom drum treatment technology of anchor cable grouting(anchor beam) + concrete pouring,effectively improve the mechanical properties of surrounding rock and improve the anchoring foundation of anchor. The field engineering practices showed that the comprehensive control technology of the bottom drum of the soft rock roadway effectively controlled the deformation of the roadway,ensured the safe production and use requirements of the roadway,and had obvious support effect. It is of great significance for rectifying the repeated deformation of the floor of soft rock roadway and the long-term efficient and safe production of the mine.
The north wing-640 m track dark inclined shaft of the Chensilou Coal Mine was affected by the F_(18) normal fault with a drop of 163 m during the roadway excavation. The roadway was separated from the fault bed by the mudstone and sandy mudstone layer of the fault. K_5 sandstone layer construction,rock stratum fracture,stress concentration,continuous deformation of roadway floor,for the continuous deformation of the bottom drum of the 640 m track dark inclined shaft in the north wing of Chensilou Coal Mine,based on the surrounding rock deformation mechanism and loose circle theory of surrounding rock reinforcement,through theoretical analysis,field test,mine pressure observation and other means,put forward the comprehensive treatment technology of soft rock roadway bottom drum under complex conditions,namely: using grouting + anchor net(steel strip) + hollow grouting combined bottom drum treatment technology of anchor cable grouting(anchor beam) + concrete pouring,effectively improve the mechanical properties of surrounding rock and improve the anchoring foundation of anchor. The field engineering practices showed that the comprehensive control technology of the bottom drum of the soft rock roadway effectively controlled the deformation of the roadway,ensured the safe production and use requirements of the roadway,and had obvious support effect. It is of great significance for rectifying the repeated deformation of the floor of soft rock roadway and the long-term efficient and safe production of the mine.
引文
[1]张荣立,何国纬,李铎.采矿工程设计手册[M].北京:煤炭工业出版社,2013.
[2]何满朝,邹正盛,邹友峰.软岩巷道工程概论[M].徐州:中国矿业大学出版社,2010.
[3]何满朝.中国煤矿软岩巷道支护工程设计与施工指南[M].北京:科学出版社,2004.
[4]陈军生,李忠玲.改进支护工艺提高支护效果[J].锚杆支护,1999(3):11-14.Chen Junsheng,Li Zhongling. To improve the support technologyand improve the support effect[J]. Bolt Support,1999(3):11-14.
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[6]胡成忠,宋申华.锚网支护在软岩巷道中的应用[J].矿山压力与顶板管理,2003(3):25-26.Hu Chengzhong,Song Shenhua. Application of bolt-mesh support insoft rock roadway[J]. Mine Pressure and Roof Management,2003(3):25-26.
[7]李呈刚.构造带大变形巷道破坏机理及注锚联合支护技术[J].煤炭工程,2018(6):70-75.Li Chenggang. Failure mechanism of large deformation roadway instructural belt and combined support technology of grouting and an-chor[J]. Coal Engineering,2018(6):70-75.
[8]胡亮,林引,等.基于松动圈理论的工作面底鼓支护技术研究[J].能源与环保,2017,39(6):208-211.Hu Liang,Lin Yan,et al. Research on the technique of face floorsupport based on loose Ring Theory[J]. Energy and EnvironmentalProtection,2017,39(6):208-211.
[9]陈鑫源.高应力软岩巷道围岩技术研究[J].能源与环保,2017,39(6):180-185.Chen Xinyuan. Study on surrounding rock technology of soft rockroadway with high stress[J]. Energy and Environmental Protec-tion,2017,39(6):180-185.
[10]高顺平.金属网在锚网支护中的作用机理与应用研究[J].华北科技学院学报,2014,1(4):73-74.Gao Shunping. Study on the Mechanism and Application of Metalmesh in Bolt mesh support[J]. Journal of North China Institute ofScience and Technology,2014,1(4):73-74.
[11]董雨,李雷.深部软岩巷道底鼓形成因素及控制技术研究[J].内蒙古煤炭经济,2017(15):103-105.Dong Yu,Li Lei. Study on forming factors and controlling tech-niques of bottom bulge in deep soft rock roadway[J]. Coal Econo-my in Inner Mongolia,2017(15):103-105.
[12]李亚东.软岩巷道底板加固技术及应用[J].山西煤炭管理干部学院学报,2012(11):41-42.Li Yadong. Reinforcement Technology and Application of soft Rockroadway floor[J]. Journal of Shanxi Coal Management cadre Col-lege,2012(11):41-42.
[13]李强.深井软岩巷道底板加固技术研究与应用[J].山东煤炭科技,2015(9):6-7.Li Qiang. Study and Application of soft Rock roadway floor rein-forcement Technology in Deep Mine[J]. Shandong Coal Scienceand Technology,2015(9):6-7.
[14]马冰.巷道底板锚固注浆技术在蒋家河煤矿的应用[J].现代矿业,2013(9):120-121.Ma Bing. Application of roadway floor Anchorage grouting Technol-ogy in Jiangjiahe Coal Mine[J]. Modern Mining Industry,2013(9):120-121.
[15]王兴汉.巷道底鼓的防治方法简析[J].黑龙江科学,2014(3):40.Wang Xinghan. A brief analysis on the prevention and cure methodof roadway floor heave[J]. Heilongjiang Science,2014(3):40.
[16]彭继勇,汪国庆,丁岩四.深井软岩巷道底鼓的防治[J].安徽科技,2012(8):43-44.Peng Jiyong,Wang Guoqing,Ding Yansi. Prevention and treatmentof floor bulge in soft rock roadway of deep well[J]. Anhui Scienceand Technology,2012(8):43-44.
[17]赵权.巷道底鼓机理及防治措施[J].煤炭技术,2007(8):49-51.Zhao Quan. Mechanism and prevention measures of roadway floorheave[J]. Coal Technology,2007(8):49-51.
[18]刘泉声,卢超波,刘滨,等.深部巷道注浆加固浆液扩散机理与应用研究[J].采矿与安全工程学报,2014(3):333-339.Liu Quansheng,Lu Chaobo,Liu Bin,et al. Study on diffusionmechanism and application of grouting in deep roadway[J]. Jour-nal of Mining and Safety Engineering,2014(3):333-339.
[19]仲启方,阎震彪,管歆.巷道围岩注浆加固技术[J].煤炭技术,2015(1):80-83.Zhong Qi Fang,Yan Zhenbiao,Guan Xin. Grouting reinforcementtechnique for surrounding Rock of roadway[J]. Coal Technology,2015(1):80-83.
[20]张建林.软岩巷道底鼓综合治理技术研究与应用[J].煤炭工程,2018(3):50-52.Zhang Jianlin. Research and application of comprehensive treat-ment technology for roadway floor heave in soft rock[J]. Coal En-gineering,2018(3):50-52.
[2]何满朝,邹正盛,邹友峰.软岩巷道工程概论[M].徐州:中国矿业大学出版社,2010.
[3]何满朝.中国煤矿软岩巷道支护工程设计与施工指南[M].北京:科学出版社,2004.
[4]陈军生,李忠玲.改进支护工艺提高支护效果[J].锚杆支护,1999(3):11-14.Chen Junsheng,Li Zhongling. To improve the support technologyand improve the support effect[J]. Bolt Support,1999(3):11-14.
[5]方新秋,何杰,何加省.深部高应力软岩动压巷道加固技术研究[J].岩土力学,2009,30(6):1693-1698.Fang Xinqiu,he Jie,He Jiasheng. Study on strengthening techniqueof dynamic pressure roadway in deep high stress soft rock[J].Geotechnical Mechanics,2009,30(6):1693-1698.
[6]胡成忠,宋申华.锚网支护在软岩巷道中的应用[J].矿山压力与顶板管理,2003(3):25-26.Hu Chengzhong,Song Shenhua. Application of bolt-mesh support insoft rock roadway[J]. Mine Pressure and Roof Management,2003(3):25-26.
[7]李呈刚.构造带大变形巷道破坏机理及注锚联合支护技术[J].煤炭工程,2018(6):70-75.Li Chenggang. Failure mechanism of large deformation roadway instructural belt and combined support technology of grouting and an-chor[J]. Coal Engineering,2018(6):70-75.
[8]胡亮,林引,等.基于松动圈理论的工作面底鼓支护技术研究[J].能源与环保,2017,39(6):208-211.Hu Liang,Lin Yan,et al. Research on the technique of face floorsupport based on loose Ring Theory[J]. Energy and EnvironmentalProtection,2017,39(6):208-211.
[9]陈鑫源.高应力软岩巷道围岩技术研究[J].能源与环保,2017,39(6):180-185.Chen Xinyuan. Study on surrounding rock technology of soft rockroadway with high stress[J]. Energy and Environmental Protec-tion,2017,39(6):180-185.
[10]高顺平.金属网在锚网支护中的作用机理与应用研究[J].华北科技学院学报,2014,1(4):73-74.Gao Shunping. Study on the Mechanism and Application of Metalmesh in Bolt mesh support[J]. Journal of North China Institute ofScience and Technology,2014,1(4):73-74.
[11]董雨,李雷.深部软岩巷道底鼓形成因素及控制技术研究[J].内蒙古煤炭经济,2017(15):103-105.Dong Yu,Li Lei. Study on forming factors and controlling tech-niques of bottom bulge in deep soft rock roadway[J]. Coal Econo-my in Inner Mongolia,2017(15):103-105.
[12]李亚东.软岩巷道底板加固技术及应用[J].山西煤炭管理干部学院学报,2012(11):41-42.Li Yadong. Reinforcement Technology and Application of soft Rockroadway floor[J]. Journal of Shanxi Coal Management cadre Col-lege,2012(11):41-42.
[13]李强.深井软岩巷道底板加固技术研究与应用[J].山东煤炭科技,2015(9):6-7.Li Qiang. Study and Application of soft Rock roadway floor rein-forcement Technology in Deep Mine[J]. Shandong Coal Scienceand Technology,2015(9):6-7.
[14]马冰.巷道底板锚固注浆技术在蒋家河煤矿的应用[J].现代矿业,2013(9):120-121.Ma Bing. Application of roadway floor Anchorage grouting Technol-ogy in Jiangjiahe Coal Mine[J]. Modern Mining Industry,2013(9):120-121.
[15]王兴汉.巷道底鼓的防治方法简析[J].黑龙江科学,2014(3):40.Wang Xinghan. A brief analysis on the prevention and cure methodof roadway floor heave[J]. Heilongjiang Science,2014(3):40.
[16]彭继勇,汪国庆,丁岩四.深井软岩巷道底鼓的防治[J].安徽科技,2012(8):43-44.Peng Jiyong,Wang Guoqing,Ding Yansi. Prevention and treatmentof floor bulge in soft rock roadway of deep well[J]. Anhui Scienceand Technology,2012(8):43-44.
[17]赵权.巷道底鼓机理及防治措施[J].煤炭技术,2007(8):49-51.Zhao Quan. Mechanism and prevention measures of roadway floorheave[J]. Coal Technology,2007(8):49-51.
[18]刘泉声,卢超波,刘滨,等.深部巷道注浆加固浆液扩散机理与应用研究[J].采矿与安全工程学报,2014(3):333-339.Liu Quansheng,Lu Chaobo,Liu Bin,et al. Study on diffusionmechanism and application of grouting in deep roadway[J]. Jour-nal of Mining and Safety Engineering,2014(3):333-339.
[19]仲启方,阎震彪,管歆.巷道围岩注浆加固技术[J].煤炭技术,2015(1):80-83.Zhong Qi Fang,Yan Zhenbiao,Guan Xin. Grouting reinforcementtechnique for surrounding Rock of roadway[J]. Coal Technology,2015(1):80-83.
[20]张建林.软岩巷道底鼓综合治理技术研究与应用[J].煤炭工程,2018(3):50-52.Zhang Jianlin. Research and application of comprehensive treat-ment technology for roadway floor heave in soft rock[J]. Coal En-gineering,2018(3):50-52.