高应力软岩巷道变形破坏特征及机理分析
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摘要
针对高应力软岩巷道变形量大、变形持续时间长、难支护等问题,以某矿南翼运输石门为工程背景,经过长期的井下观测,认为采动扰动作用下的高应力软岩巷道变形破坏特征呈现明显的阶段破坏特征,根据巷道围岩地质条件建立了分析模型,分析了导致巷道大变形失稳的力学机制,最终确定了某矿南翼运输石门巷道支护应遵循"刚柔互补、长短结合、及时主动、协调在控"的原则。
Aiming at the problems of large deformation,long deformation duration and difficult support of high stress soft rock roadway,taking Shimen transportation project in the south wing of a mine as the engineering background,after long-term underground observation,it is considered that the deformation and failure characteristics of high stress soft rock roadway under mining disturbance show obvious stage failure characteristics,based on the geological conditions of roadway surrounding rock,an analysis model is established and the roadway changes caused by mining disturbance are analyzed,the mechanical mechanism of shape instability finally determines that the supporting principle of the south flank transport stone gate roadway of a mine should follow the principle of "rigidity and flexibility complementary,combination of length and length,timely initiative,coordination and control".
Aiming at the problems of large deformation,long deformation duration and difficult support of high stress soft rock roadway,taking Shimen transportation project in the south wing of a mine as the engineering background,after long-term underground observation,it is considered that the deformation and failure characteristics of high stress soft rock roadway under mining disturbance show obvious stage failure characteristics,based on the geological conditions of roadway surrounding rock,an analysis model is established and the roadway changes caused by mining disturbance are analyzed,the mechanical mechanism of shape instability finally determines that the supporting principle of the south flank transport stone gate roadway of a mine should follow the principle of "rigidity and flexibility complementary,combination of length and length,timely initiative,coordination and control".
引文
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[9] 王卫军,袁超,余伟健,等.深部大变形巷道围岩稳定性控制方法研究[J].煤炭学报,2016,41(12):2921-2931.Wang Weijun,Yuan Chao,Yu Weijian,et al.Stability control method of surrounding rock in deep roadway with large deformation[J].Journal of China Coal Society,2016,41(12):2921-2931.
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[13] 张恩强,吴蒸,高丁丁,等.采动影响下工作面巷道变形破坏机理研究[J].煤炭技术,2017,36(1):24-26.Zhang Enqiang,Wu Zheng,Gao Dingding,et al.Study on failure mechanism of roadway under mining influence[J].Coal Technology,2017,36(1):24-26.
[14] 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.Roadway support theory based on broken rock zone[J].Journal of China Coal Society,1994,19(1):21-32.
[15] 王连国,李明远,王学知.深部高应力极软岩巷道锚注支护技术研究[J].岩石力学与工程学报,2005,24(16):2889-2893.Wang Lianguo,Li Mingyuan,Wang Xuezhi.Study on mechanisms and technology for bolting and grouting in special soft rock roadways under high stress[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(16):2889-2893.
[2] 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):467-473.Hou Chaojiong.Effective approach for surrounding rock control in deep roadway[J].Journal of China University of Mining & Technology,2017,46(3):467-473.
[3] 刘立民,张进鹏.软岩巷道预应力锚注支护技术研究与应用[J].煤炭技术,2017,36(1):9-11.Liu Limin,Zhang Jinpeng.Research and application of prestressed anchor support technology in soft rock roadway[J].Coal Technology,2017,36(1):9-11.
[4] 王飞,刘洪涛,张胜凯,等.高应力软岩巷道可接长锚杆让压支护技术[J].岩土工程学报,2014,36(9):1666-1673.Wang Fei,Liu Hongtao,Zhang Shengkai,et al.Support technology of releasing pressure with connected long bolt in high stress soft rock roadway[J].Chinese Journal of Geotechnical Engineering,2014,36(9):1666-1673.
[5] 张辉.超千米深井高应力巷道底鼓机理及锚固技术研究[D].北京:中国矿业大学(北京),2013.
[6] 孙晓明,何满潮.深部开采软岩巷道耦合支护数值模拟研究[J].中国矿业大学学报,2007,34(2):166-169.Sun Xiaoming,He Manchao.Numerical simulation research on coupling support theory of roadway within soft rock at depth[J].Journal of China University of Mining & Technology,2007,34(2):166-169.
[7] 王成,汪良海,张念超.高应力软岩巷道围岩流变动态演化研究[J].采矿与安全工程学报,2013,30(1):14-18.Wang Cheng,Wang Lianghai,Zhang Nianchao.Research on the dynamic evolutionary of rock rheology in soft rock with high ground stress[J].Journal of Mining & Safety Engineering,2013,30(1):14-18.
[8] 郭修杰,赵仁乐,杨永杰.低强度泥化软岩巷道变形机理及支护技术[J].中国煤炭,2014,40(9):45-48.Guo Xiujie,Zhao Renle,Yang Yongjie.Deformation mechanism of roadway with low intensity clay soft rock and supporting technology for it[J].China Coal,2014,40(9):45-48.
[9] 王卫军,袁超,余伟健,等.深部大变形巷道围岩稳定性控制方法研究[J].煤炭学报,2016,41(12):2921-2931.Wang Weijun,Yuan Chao,Yu Weijian,et al.Stability control method of surrounding rock in deep roadway with large deformation[J].Journal of China Coal Society,2016,41(12):2921-2931.
[10] 牛双建,靖洪文,张忠宇,等.深部软岩巷道围岩稳定控制技术研究及应用[J].煤炭学报,2011,36(6):914-919.Niu Shuangjian,Jing Hongwen,Zhang Zhongyu,et al.Study on control technology of surrounding rocks in deep soft roadway and its application[J].Journal of China Coal Society,2011,36(6):914-919.
[11] 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 pretension stress and intensive bolting system and its application in deep roadways[J].Journal of China Coal Society,2007,32(12):1233-1238.
[12] 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):1424-1435,1444.Meng Qingbin,Han Lijun,Zhang Fanke,et al.Coupling support effect on high-stress deep soft rock roadway and its application[J].Rock and Soil Mechanics,2017,38(5):1424-1435,1444.
[13] 张恩强,吴蒸,高丁丁,等.采动影响下工作面巷道变形破坏机理研究[J].煤炭技术,2017,36(1):24-26.Zhang Enqiang,Wu Zheng,Gao Dingding,et al.Study on failure mechanism of roadway under mining influence[J].Coal Technology,2017,36(1):24-26.
[14] 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.Roadway support theory based on broken rock zone[J].Journal of China Coal Society,1994,19(1):21-32.
[15] 王连国,李明远,王学知.深部高应力极软岩巷道锚注支护技术研究[J].岩石力学与工程学报,2005,24(16):2889-2893.Wang Lianguo,Li Mingyuan,Wang Xuezhi.Study on mechanisms and technology for bolting and grouting in special soft rock roadways under high stress[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(16):2889-2893.