两帮注浆在煤层巷道底鼓控制中的数值模拟研究
|
摘要
以漳村煤矿2205工作面回风巷为试验背景,通过对其顶底板、两帮与煤柱的破坏关系分析,得到2203工作面的采动影响是造成其巷道底鼓的主要原因,其底鼓类型为挤压流动型;结合巷道的实际情况,提出对巷道两帮注浆来控制巷道底鼓的方案,并运用FLAC3D软件进行数值模拟,结果显示:两帮注浆后巷道底鼓量、顶板下沉量、两帮位移量分别为25、55、14 cm,相比原状态分别减小了78.4%、24.7%、71.4%,有效改善了巷道底鼓状况。
By taking air-return way of 2205 working face in Zhangcun Mine as the test background and through the analysis on the failure relation between roof,floor and two sides of the air-return way and the coal pillar,it was found out that the mining influence of 2203 working face was the main factor causing the roadway floor heave,and this floor heave was the extrusion flow type.Based on the actual situation of the roadway,the solution of applying two-sides grouting for controlling the roadway floor heave was proposed and numerical simulation was made with FLAC3 Dsoftware.The results showed that the amount of the roadway floor heave,the roof convergence and the displacement of the roadway sides after the two-sides grouting was respectively 25 cm,55 cm and 14 cm,reduced by 78.4%,24.7% and 71.4% as compared to that in the original state,and the roadway floor heave was under effective control.
By taking air-return way of 2205 working face in Zhangcun Mine as the test background and through the analysis on the failure relation between roof,floor and two sides of the air-return way and the coal pillar,it was found out that the mining influence of 2203 working face was the main factor causing the roadway floor heave,and this floor heave was the extrusion flow type.Based on the actual situation of the roadway,the solution of applying two-sides grouting for controlling the roadway floor heave was proposed and numerical simulation was made with FLAC3 Dsoftware.The results showed that the amount of the roadway floor heave,the roof convergence and the displacement of the roadway sides after the two-sides grouting was respectively 25 cm,55 cm and 14 cm,reduced by 78.4%,24.7% and 71.4% as compared to that in the original state,and the roadway floor heave was under effective control.
引文
[1]陈炎光,陆士良.中国煤矿巷道围岩控制[M].徐州:中国矿业大学出版社,1994.
[2]王卫军,冯涛.加固两帮控制深井巷道底鼓的机理研究[J].岩石力学与工程学报,2005,24(5):808-811.
[3]侯朝炯,何亚男,李晓.加固巷道帮、角控制底鼓的研究[J].煤炭学报,1995,20(3):229-233.
[4]李开学,王宏图,刘正海.巷道底鼓理论与防治技术[J].矿业安全与环保,2008,35(3):86-88.
[5]柏建彪,李文峰,王襄禹.采动巷道底鼓机理与控制技术[J].采矿与安全工程学报,2011,28(1):1-5.
[6]唐远见,梁经群.注浆法控制巷道底鼓机理及其数值模拟分析[J].山东煤炭科技,2010(6):111-113.
[7]张恩强,张军华,陈永光,等.红石岩煤矿巷道底鼓原因分析及其治理[J].矿业安全与环保,2013,40(6):65-68.
[8]李广新.注浆法治理底鼓巷道在双阳煤矿的应用[J].煤炭技术,2010,29(2):66-69.
[9]朱萌萌,冯飞胜,张恒,等.基于FLAC仿真计算的巷道底鼓预控技术[J].矿业安全与环保,2014,41(2):49-52.
[10]李树清,王卫军.加固底板对深部软岩巷道两帮稳定性影响的数值分析[J].煤炭学报,2007,32(2):123-126.
[11]冯江兵,张科学,路希伟.采动影响下回采巷道底鼓机理及实用性技术研究[J].煤炭技术,2011,30(3):68-70.
[2]王卫军,冯涛.加固两帮控制深井巷道底鼓的机理研究[J].岩石力学与工程学报,2005,24(5):808-811.
[3]侯朝炯,何亚男,李晓.加固巷道帮、角控制底鼓的研究[J].煤炭学报,1995,20(3):229-233.
[4]李开学,王宏图,刘正海.巷道底鼓理论与防治技术[J].矿业安全与环保,2008,35(3):86-88.
[5]柏建彪,李文峰,王襄禹.采动巷道底鼓机理与控制技术[J].采矿与安全工程学报,2011,28(1):1-5.
[6]唐远见,梁经群.注浆法控制巷道底鼓机理及其数值模拟分析[J].山东煤炭科技,2010(6):111-113.
[7]张恩强,张军华,陈永光,等.红石岩煤矿巷道底鼓原因分析及其治理[J].矿业安全与环保,2013,40(6):65-68.
[8]李广新.注浆法治理底鼓巷道在双阳煤矿的应用[J].煤炭技术,2010,29(2):66-69.
[9]朱萌萌,冯飞胜,张恒,等.基于FLAC仿真计算的巷道底鼓预控技术[J].矿业安全与环保,2014,41(2):49-52.
[10]李树清,王卫军.加固底板对深部软岩巷道两帮稳定性影响的数值分析[J].煤炭学报,2007,32(2):123-126.
[11]冯江兵,张科学,路希伟.采动影响下回采巷道底鼓机理及实用性技术研究[J].煤炭技术,2011,30(3):68-70.