泥化软岩巷道全断面锚注加固技术研究
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摘要
针对动压泥化软岩巷道围岩软弱破碎、巷道变形量大、难支护等问题,以贵州某矿水平车场为工程背景,分析了动压作用下泥化软岩巷道变形破坏特征及影响因素,提出了全断面锚注加固支护技术。通过FLAC3D进行了数值模拟,对比分析了支护效果。在车场巷道进行了工程实践,现场试验表明:实行全断面锚注加固支护技术,有效降低了巷道两帮收缩量、顶底板移近量,避免了巷道的失稳破坏,减小巷道返修工作量。
In order to overcome the problem of roadway broken weak,severe deformation and support difficulty in soft and mudding roadway under dynamical pressure impact,taking a coal mine in Guizhou as a project example,the deformation characteristics and influence factors of soft and mudding roadway under dynamical pressure impact were analyzed,and the supporting technology of full section anchorage reinforcement was put forward. By means of numerical simulation FLAC3 Danalyze the support effect. The engineering practice was carried out in the roadway of the yard,the field test showed that the technique of full section anchor reinforcement and support was implemented,which effectively reduced the shrinkage of the two groups of roadways and the proximity of the top floor,avoided the instability and destruction of the roadway,and reduced the work load of roadway restoration.
In order to overcome the problem of roadway broken weak,severe deformation and support difficulty in soft and mudding roadway under dynamical pressure impact,taking a coal mine in Guizhou as a project example,the deformation characteristics and influence factors of soft and mudding roadway under dynamical pressure impact were analyzed,and the supporting technology of full section anchorage reinforcement was put forward. By means of numerical simulation FLAC3 Danalyze the support effect. The engineering practice was carried out in the roadway of the yard,the field test showed that the technique of full section anchor reinforcement and support was implemented,which effectively reduced the shrinkage of the two groups of roadways and the proximity of the top floor,avoided the instability and destruction of the roadway,and reduced the work load of roadway restoration.
引文
[1]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 controlmethod of surrounding rock in deep roadway with large deformation[J]. Journal of China Coal Society,2016,41(12):2921-2931.
[2]杨晓杰,王嘉敏,张秀莲,等.深井泥岩吸水软化规律实验研究[J].煤炭技术,2017,36(9):1-3.Yang Xiaojie,Wang Jiamin,Zhang Xiulian,el at. Experiment studyon water absorption and strength softening of mudstone in deeproadway[J]. Coal Technology,2017,36(9):1-3.
[3]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. Yieldable technolo-gy of lengthened bolts for high-stress soft rock roadways[J]. Chi-nese Journal of Geotechnical Engineering,2014,36(9):1666-1673.
[4]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.
[5]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 prestressedanchor support technology in soft rock roadway[J]. Coal Technolo-gy,2017,36(1):9-11.
[6]杨晓杰,王嘉敏,张民,等.大强煤矿深部巷道围岩吸水软化规律试验研究[J].矿业科学学报,2017,2(5):432-438.Yang Xiaojie,Wang Jiamin,Zhang Min,et al. Study on strengthsoftening of surrounding rock in deep roadway at Daqiang CoalMine[J]. Journal of Mining Science Technology,2017,2(5):432-438.
[7]孙利辉,杨本生,孙春东,等.深部软岩巷道底鼓机理与治理试验研究[J].采矿与安全工程学报,2017,34(2):235-242.Sun Lihui,Yang Bensheng,Sun Chundong,et al. Experimental re-search on mechanism and controlling of floor heave in deep softrock roadway[J]. Journal of Mining&Safety Engineering,2017,34(2):235-242.
[8]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 Fange,et al. Coupling supporteffect on high-stress deep soft rock roadway and its application[J]. Rock and Soil Mechanics,2017,38(5):1424-1435,1444.
[9]柏建彪,李文峰,王襄禹,等.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.Bai Jianbiao,Li Wenfeng,Wang Xiangyu,et al. Mechanism of floorheave and control technology of roadway induced by mining[J].Journal of Mining&Safety Engineering,2011,28(1):1-5.
[10]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 failuremechanism of roadway under mining influence[J]. Coal Technolo-gy,2017,36(1):24-26.
[11]李亚辉.化乐煤矿泥化软岩巷道支护及快速掘进技术研究[D].徐州:中国矿业大学,2015.
[12]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 mechanismand supporting technology of low strength muddy soft rock roadway[J]. China Coal,2014,40(9):45-48.
[13]王成,韩亚峰,张念超.渗水泥化巷道锚杆支护围岩稳定性控制研究[J].采矿与安全工程学报,2014,31(4):575-579.Wang Cheng,Han Yafeng,Zhang Nianchao. Surrounding rock sta-bility control with bolt support in seepage argillaceous roadway[J]. Journal of Mining&Safety Engineering,2014,31(4):575-579.
[14]阚甲广,张农,李桂臣,等.泥化巷道底板控制技术研究[J].采矿与安全工程学报,2011,28(3):356-360.Kan Jiaguang,Zhang Nong,Li Guichen,et al. Study on floor con-trolling technology of argillization roadway[J]. Journal of Mining&Safety Engineering,2011,28(3):356-360.
[15]许兴亮,张农.富水条件下软岩巷道变形特征与过程控制研究[J].中国矿业大学学报,2007(3):298-302.Xu Xingliang,Zhang Nong. Study of control process deformationbehavior and of soft rock drift under rich water condition[J]. Jour-nal of China University of Mining&Technology,2007(3):298-302.
[2]杨晓杰,王嘉敏,张秀莲,等.深井泥岩吸水软化规律实验研究[J].煤炭技术,2017,36(9):1-3.Yang Xiaojie,Wang Jiamin,Zhang Xiulian,el at. Experiment studyon water absorption and strength softening of mudstone in deeproadway[J]. Coal Technology,2017,36(9):1-3.
[3]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. Yieldable technolo-gy of lengthened bolts for high-stress soft rock roadways[J]. Chi-nese Journal of Geotechnical Engineering,2014,36(9):1666-1673.
[4]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.
[5]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 prestressedanchor support technology in soft rock roadway[J]. Coal Technolo-gy,2017,36(1):9-11.
[6]杨晓杰,王嘉敏,张民,等.大强煤矿深部巷道围岩吸水软化规律试验研究[J].矿业科学学报,2017,2(5):432-438.Yang Xiaojie,Wang Jiamin,Zhang Min,et al. Study on strengthsoftening of surrounding rock in deep roadway at Daqiang CoalMine[J]. Journal of Mining Science Technology,2017,2(5):432-438.
[7]孙利辉,杨本生,孙春东,等.深部软岩巷道底鼓机理与治理试验研究[J].采矿与安全工程学报,2017,34(2):235-242.Sun Lihui,Yang Bensheng,Sun Chundong,et al. Experimental re-search on mechanism and controlling of floor heave in deep softrock roadway[J]. Journal of Mining&Safety Engineering,2017,34(2):235-242.
[8]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 Fange,et al. Coupling supporteffect on high-stress deep soft rock roadway and its application[J]. Rock and Soil Mechanics,2017,38(5):1424-1435,1444.
[9]柏建彪,李文峰,王襄禹,等.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.Bai Jianbiao,Li Wenfeng,Wang Xiangyu,et al. Mechanism of floorheave and control technology of roadway induced by mining[J].Journal of Mining&Safety Engineering,2011,28(1):1-5.
[10]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 failuremechanism of roadway under mining influence[J]. Coal Technolo-gy,2017,36(1):24-26.
[11]李亚辉.化乐煤矿泥化软岩巷道支护及快速掘进技术研究[D].徐州:中国矿业大学,2015.
[12]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 mechanismand supporting technology of low strength muddy soft rock roadway[J]. China Coal,2014,40(9):45-48.
[13]王成,韩亚峰,张念超.渗水泥化巷道锚杆支护围岩稳定性控制研究[J].采矿与安全工程学报,2014,31(4):575-579.Wang Cheng,Han Yafeng,Zhang Nianchao. Surrounding rock sta-bility control with bolt support in seepage argillaceous roadway[J]. Journal of Mining&Safety Engineering,2014,31(4):575-579.
[14]阚甲广,张农,李桂臣,等.泥化巷道底板控制技术研究[J].采矿与安全工程学报,2011,28(3):356-360.Kan Jiaguang,Zhang Nong,Li Guichen,et al. Study on floor con-trolling technology of argillization roadway[J]. Journal of Mining&Safety Engineering,2011,28(3):356-360.
[15]许兴亮,张农.富水条件下软岩巷道变形特征与过程控制研究[J].中国矿业大学学报,2007(3):298-302.Xu Xingliang,Zhang Nong. Study of control process deformationbehavior and of soft rock drift under rich water condition[J]. Jour-nal of China University of Mining&Technology,2007(3):298-302.