复杂应力条件下巷道加固技术研究
|
摘要
针对永安煤矿材料、胶带和回风下山受多次采动影响围岩变形破坏严重的问题,通过分析原有砌碹支护存在的缺陷和围岩大变形机制,提出了注浆加固和锚杆、锚索联合支护的治理方案,给出了注浆参数及注浆工艺和锚杆、锚索支护参数。通过现场实施并实测得出,注浆后浆液将大量裂隙、空洞充填,减小了围岩破碎范围,围岩强度得到提高,围岩移近量明显减小,最终有效控制了围岩变形,保持了巷道稳定,保证了安全生产。
The material tape and return air wing on coal mine mountain is influenced by multiple mining deformation of surrounding rock damage serious problems,through the analysis of the original supporting defects of build by laying bricks or stones self-closed and large deformation of surrounding rock mechanism,puts forward the grouting reinforcement and combined support of bolt anchor cable management solutions,grouting parameters and grouting process is given and anchor cable anchor supporting parameters Through the field implementation and measured that the grouting slurry will be a large number of fracture cavity filling,reduced the size of broken surrounding rock strength was improved,closer to significantly reduce the amount of surrounding rock,finally to effectively control the deformation of surrounding rock,to keep the roadway stable,ensure the safety in production.
The material tape and return air wing on coal mine mountain is influenced by multiple mining deformation of surrounding rock damage serious problems,through the analysis of the original supporting defects of build by laying bricks or stones self-closed and large deformation of surrounding rock mechanism,puts forward the grouting reinforcement and combined support of bolt anchor cable management solutions,grouting parameters and grouting process is given and anchor cable anchor supporting parameters Through the field implementation and measured that the grouting slurry will be a large number of fracture cavity filling,reduced the size of broken surrounding rock strength was improved,closer to significantly reduce the amount of surrounding rock,finally to effectively control the deformation of surrounding rock,to keep the roadway stable,ensure the safety in production.
引文
[1]宗义江,韩立军,韩贵雷.破裂岩体承压注浆加固力学特性试验研究[J].采矿与安全工程学报,2013,30(4):483-488.
[2]康红普,冯志强.煤矿巷道围岩注浆加固技术的现状与发展趋势[J].煤矿开采,2013,18(3):1-7.
[3]徐香庆,郭文喜.松软破碎围岩巷道注浆加固技术应用研究[J].煤炭工程,2012(7):29-31.
[4]王兴库.锚杆注浆加固技术在回采巷道底臌治理中的应用[J].煤炭技术,2008(5):104-105.
[5]刘辉,雷少刚,邓喀中,等.超高水材料地裂缝充填治理技术[J].煤炭学报,2014,39(1):72-77.
[6]王旭锋,孙春东,张东升,等.超高水材料充填胶结体工程特性试验研究[J].采矿与安全工程学报,2014,31(6):852-856.
[7]韩加红.厚层软弱顶板巷道综合支护技术研究[J].煤炭科学技术,2016(9):77-82.
[8]薛华俊.大断面软弱煤帮巷道注浆体力学特性与控制技术研究[D].北京:中国矿业大学,2016.
[9]陶广美,马赛,李学鹏.大采高工作面端头区注浆加固技术[J].煤矿安全,2016,47(11):139-141,145.
[10]王兴库.锚杆注浆加固技术在回采巷道底臌治理中的应用[J].煤炭技术,2008(5):104-105.
[2]康红普,冯志强.煤矿巷道围岩注浆加固技术的现状与发展趋势[J].煤矿开采,2013,18(3):1-7.
[3]徐香庆,郭文喜.松软破碎围岩巷道注浆加固技术应用研究[J].煤炭工程,2012(7):29-31.
[4]王兴库.锚杆注浆加固技术在回采巷道底臌治理中的应用[J].煤炭技术,2008(5):104-105.
[5]刘辉,雷少刚,邓喀中,等.超高水材料地裂缝充填治理技术[J].煤炭学报,2014,39(1):72-77.
[6]王旭锋,孙春东,张东升,等.超高水材料充填胶结体工程特性试验研究[J].采矿与安全工程学报,2014,31(6):852-856.
[7]韩加红.厚层软弱顶板巷道综合支护技术研究[J].煤炭科学技术,2016(9):77-82.
[8]薛华俊.大断面软弱煤帮巷道注浆体力学特性与控制技术研究[D].北京:中国矿业大学,2016.
[9]陶广美,马赛,李学鹏.大采高工作面端头区注浆加固技术[J].煤矿安全,2016,47(11):139-141,145.
[10]王兴库.锚杆注浆加固技术在回采巷道底臌治理中的应用[J].煤炭技术,2008(5):104-105.