深井软岩巷道帮底锚注支护技术应用
|
摘要
为了研究控制深井软岩巷道大变形的有效支护方法,以淮南朱集煤矿轨道大巷为研究对象,分析了巷道变形破坏特征及其主要原因,并基于深部巷道支护原理,提出了考虑和不考虑帮底支护的2套支护方案。利用FLAC3D数值模拟软件,对不同支护方式下巷道围岩的应力场、位移场和破损区进行对比分析。数值模拟结果表明,加强帮底支护,能降低应力增高区的应力值,减小围岩扰动区、应力增高区和破坏区的范围,有效控制顶板围岩下沉和底板围岩隆起,验证了巷道帮底锚注支护技术的有效性。现场监测数据表明,巷道帮底锚注支护技术实施后,取得了较好的支护效果。
In order to study the effective support method for controlling the large deformation in deep soft rock roadway,taking the track roadway of Zhuji Coal Mine in Huainan as the research object,the characteristic of roadway deformation and failure and its main reason were analyzed,and based on the principle of deep roadway support,two sets of supporting schemes that considering or not considering the bottom support were put forward. By using FLAC3 Dnumerical simulation software and under different supporting modes,the stress field,displacement field and damaged zone of surrounding rock of roadway were compared and analyzed. The numerical simulation results show that strengthening the bottom support can reduce the stress value in the stress increasing area,reduce the range of disturbance zone of surrounding rock,stress increasing zone and failure zone,effectively control the subsidence of roof surrounding rock and uplift of floor surrounding rock,the effectiveness of bolt-grouting support technology is verified. Field monitoring data show that good supporting effect has been achieved after the implementation of the technology.
In order to study the effective support method for controlling the large deformation in deep soft rock roadway,taking the track roadway of Zhuji Coal Mine in Huainan as the research object,the characteristic of roadway deformation and failure and its main reason were analyzed,and based on the principle of deep roadway support,two sets of supporting schemes that considering or not considering the bottom support were put forward. By using FLAC3 Dnumerical simulation software and under different supporting modes,the stress field,displacement field and damaged zone of surrounding rock of roadway were compared and analyzed. The numerical simulation results show that strengthening the bottom support can reduce the stress value in the stress increasing area,reduce the range of disturbance zone of surrounding rock,stress increasing zone and failure zone,effectively control the subsidence of roof surrounding rock and uplift of floor surrounding rock,the effectiveness of bolt-grouting support technology is verified. Field monitoring data show that good supporting effect has been achieved after the implementation of the technology.
引文
[1]袁亮.我国深部煤与瓦斯共采战略思考[J].煤炭学报,2016,41(1):1-6.
[2]康红普,范明建,高富强,等.超千米深井巷道围岩变形特征与支护技术[J].岩石力学与工程学报,2015,34(11):2227-2241.
[3]侯朝炯.深部巷道围岩控制的有效途径[J].中国矿业大学学报,2017,46(3):577-583.
[4]陈登红,华心祝.多因素影响下深部回采巷道围岩变形规律与控制对策研究[J].采矿与安全工程学报,2017,34(4):760-768.
[5]刘泉声,康永水,白运强.顾桥煤矿深井岩巷破碎软弱围岩支护方法探索[J].岩土力学,2011,32(10):3097-3104.
[6]王胜,许德新,马骥,等.松软破碎围岩回采巷道支护技术研究[J].煤矿开采,2017,22(1):69-72.
[7]张继华,王连国,朱双双,等.松散软岩巷道围岩塑性区扩展分析及支护实践[J].采矿与安全工程学报,2015,32(3):434-438.
[8]袁光明,陈玉涛,曹玉华.天坪隧道正洞巷道变形与耦合支护数值模拟研究与应用[J].矿业安全与环保,2016,43(4):82-86.
[9]高云峰.缓倾斜煤层软岩巷道变形规律及围岩控制研究[J].矿业安全与环保,2017,44(4):53-56.
[10]杨晓杰,庞杰文,张保童,等.回风石门软岩巷道变形破坏机理及其支护对策[J].煤炭学报,2014,39(6):1000-1008.
[11]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.
[12]郑朋强,陈卫忠,谭贤君,等.软岩大变形巷道底臌破坏机制与支护技术研究[J].岩石力学与工程学报,2015,34(增刊1):3143-3150.
[13]孟庆彬,韩立军,张帆舸,等.深部高应力软岩巷道耦合支护效应研究及应用[J].岩土力学,2017,38(5):1424-1435.
[14]袁亮,薛俊华,刘泉声,等.煤矿深部岩巷围岩控制理论与支护技术[J].煤炭学报,2011,36(4):535-543.
[15]刘泉声,高玮,袁亮.煤矿深部岩巷稳定控制理论与支护技术及应用[M].北京:科学出版社,2010:200-265.
[2]康红普,范明建,高富强,等.超千米深井巷道围岩变形特征与支护技术[J].岩石力学与工程学报,2015,34(11):2227-2241.
[3]侯朝炯.深部巷道围岩控制的有效途径[J].中国矿业大学学报,2017,46(3):577-583.
[4]陈登红,华心祝.多因素影响下深部回采巷道围岩变形规律与控制对策研究[J].采矿与安全工程学报,2017,34(4):760-768.
[5]刘泉声,康永水,白运强.顾桥煤矿深井岩巷破碎软弱围岩支护方法探索[J].岩土力学,2011,32(10):3097-3104.
[6]王胜,许德新,马骥,等.松软破碎围岩回采巷道支护技术研究[J].煤矿开采,2017,22(1):69-72.
[7]张继华,王连国,朱双双,等.松散软岩巷道围岩塑性区扩展分析及支护实践[J].采矿与安全工程学报,2015,32(3):434-438.
[8]袁光明,陈玉涛,曹玉华.天坪隧道正洞巷道变形与耦合支护数值模拟研究与应用[J].矿业安全与环保,2016,43(4):82-86.
[9]高云峰.缓倾斜煤层软岩巷道变形规律及围岩控制研究[J].矿业安全与环保,2017,44(4):53-56.
[10]杨晓杰,庞杰文,张保童,等.回风石门软岩巷道变形破坏机理及其支护对策[J].煤炭学报,2014,39(6):1000-1008.
[11]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.
[12]郑朋强,陈卫忠,谭贤君,等.软岩大变形巷道底臌破坏机制与支护技术研究[J].岩石力学与工程学报,2015,34(增刊1):3143-3150.
[13]孟庆彬,韩立军,张帆舸,等.深部高应力软岩巷道耦合支护效应研究及应用[J].岩土力学,2017,38(5):1424-1435.
[14]袁亮,薛俊华,刘泉声,等.煤矿深部岩巷围岩控制理论与支护技术[J].煤炭学报,2011,36(4):535-543.
[15]刘泉声,高玮,袁亮.煤矿深部岩巷稳定控制理论与支护技术及应用[M].北京:科学出版社,2010:200-265.