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| FAILURE MECHANISM OF HIGH STRESS SOFT ROCK ROADWAY SUPPORT AND ITS CONTROL |
| LI Weiteng1，3，LI Shucai2，XUAN Chao1，WANG Qi2，3，WANG Xin2，SHAO Xing2 |
| (1. Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention，Shandong University of Science and Technology，Shandong，Qingdao 266590，China；2. Research Center of Geotechnical and Structural Engineering，Shandong University，Jinan 250061，China；3. State Key Laboratory of Mining Disaster Prevention and Control，Shandong，Qingdao 266590，China) |
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Abstract To find out the support failure mechanism of high stress soft rock roadway，Zhaolou coal mine is took as engineering background，and based on the detecting，monitoring and analysis of deformation and support failure law，the numerical experimental is carried out. By amending of BEAM element in FLAC3D，the arch support is simulated effectively. The influence of the support strength，stress grade and surrounding rock strength grade to roadway stability(deformation，plastic zone，stress state of support elements) is discussed. The failure mechanism of bearing structure of soft rock roadway at great depth is analyzed in terms of the limitation of anchor net spray support and the necessity of high rigidity and high strength support. Surrounding rock bearing structure is hard to form or is easy to failure while the radial supporting strength is not enough；arch center with certain rigidity and strength is very useful and necessary. Field test is carried out with square confined concrete arch support scheme，this new high strength support system has great effect on surrounding rock stability control.
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| [1] 何满潮，谢和平，彭苏萍，等. 深部开采岩体力学研究[J]. 岩石力学与工程学报，2005，24(16)：2 803–2 813.(HE Manchao，XIE Heping，PENG Suping，et al. Study on rock mechanics in deep mining engineering[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(16)：2 803–2 813.(in Chinese))
[2] 王丽丽，高文静. 深部开采势在必行？透视我国千米深井生态[N]. 中国煤炭报，2013.(WANG Lili，GAO Wenjing. Deep mining be imperative? The perspective of 1000m deep mining ecology of our country[N]. China Coal News，2013.(in Chinese))
[3] 何满潮. 深部软岩工程的研究进展与挑战[J]. 煤炭学报，2014，39(8)：1 409–1 417.(HE Manchao. Progress and challenges of soft rock engineering in depth[J]. Journal of China Coal Society，2014，39(8)：1 409–1 417.(in Chinese))
[4] 康红普，姜鹏飞，蔡嘉芳. 锚杆支护应力场测试与分析[J]. 煤炭学报，2014，39(8)：1 521–1 529.(KANG Hongpu，JIANG Pengfei，CAI Jiafang. Test and analysis on stress fields caused by rock bolting[J] Journal of China Coal Society，2014，39(8)：1 521–1 529.(in Chinese))
[5] 吴拥政，康红普. 强力锚杆杆体尾部破断机制研究[J]. 煤炭学报，2013，38(9)：1 537–1 541.(WU Yongzheng，KANG Hongpu. Failure mechanism study on tail of high strength bolt[J]. Journal of China Coal Society，2013，38(9)：1 537–1 541.(in Chinese))
[6] 王金华. 全煤巷道锚杆锚索联合支护机制与效果分析[J]. 煤炭学报，2012，37(1)：1–7.(WANG Jinhua. Analysis on mechanism and effect of rock hop sand cables in gate road with coal seam as roof[J]. Journal of China Coal Society，2012，37(1)：1–7.(in Chinese))
[7] 高明仕，赵一超，李 明，等. 软岩巷道顶、帮、底全支全让O型控制力学模型及工程实践[J]. 岩土力学，2014，35(8)：2 307–2 313. (GAO Mingshi，ZHAO Yichao，LI Ming. Roof and support and bottom yielding support with whole section and O-shape control principle for soft rock roadway and engineering practice[J]. Rock and Soil Mechanics，2014，35(8)：2 307–2 313.(in Chinese))
[8] 柏建彪，王襄禹，姚 喆. 高应力软岩巷道耦合支护研究[J]. 中国矿业大学学报，2007，36(4)：421–425.(BAI Jianbiao，WANG Xiangyu，YAO Zhe. Study of coupling support in soft rock roadway under high stress[J]. Journal of China University of Mining and Technology，2007，36(4)：421–425.(in Chinese))
[9] 王连国，张 健，李海亮. 软岩巷道锚注支护结构蠕变分析[J]. 中国矿业大学学报，2009，(9)：608–612.(WANG Lianguo，ZHANG Jian，LI Hailian. A creep analysis of a bolt-grouting support structure within a soft rock roadway[J]. Journal of China University of Mining and Technology，2009，(9)：608–612.(in Chinese))
[10] 黄 兴，刘泉声，乔 正. 朱集矿深井软岩巷道大变形机制及其控制研究[J]. 岩土力学，2012，33(3)：827–834.(HUANG Xing，LIU Quansheng，QIAO Zheng. Research on large deformation mechanism and control method of deep soft roadway in Zhuji coal mine[J]. Rock and Soil Mechanics，2012，33(3)：827–834.(in Chinese))
[11] 李大伟. 软岩巷道锚喷支护破坏分析与对策[J]. 河南理工大学学报：自然科学版，2007，(6)：641–646.(LI Dawei. Failure analysis and countermeasure of bolt shotcrete support for soft rock roadway[J]. Journal of Henan Polytechnic University：Natural Science，2007，(6)：641–646.(in Chinese))
[12] 常庆粮，周华强，李大伟，等. 软岩破碎巷道大刚度二次支护稳定原理[J]. 采矿与安全工程学报，2007，24(2)：169–177.(CHANG Qingliang，ZHOU Huaqiang，LI Dawei，et al. Stability principle of extremely rigid secondary support ofsoft and broken rock roadway[J]. Journal of Mining and Safety Engineering，2007，24(2)：169–177.(in Chinese))
[13] 何满潮，郭志飚. 恒阻大变形锚杆力学特性及其工程应用[J]. 岩石力学与工程学报，2014，33(7)：1 297–1 308.(HE Manchao，GUO Zhibiao. Mechanical propertyand engineeringapplication ofanchor bolt with constant resistance and large deformation[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(7)：1 297–1 308.(in Chinese))
[14] LI C C. A new energy-absorbing bolt for rock support in high stressrock masses[J]. International Journal of Rock Mechanics and Mining Sciences，2010，47(2)：396–404.
[15] ANDERS A. Laboratory testing of a new type of energy absorbing rock bolt[J]. Tunnelling and Underground Space Technology，2005，20(4)：291–330.
[16] 郭志飚，李 乾，王 炯. 深部软岩巷道锚网索–桁架耦合支护技术及工程应用[J]. 岩石力学与工程学报，2009，28(增2)：3 914–3 919. (GUO Zhibiao，LI Qian，WANG Jiong. The steel mesh and anchor-truss coupling supporting technology and engineering applications of deep soft rock roadway[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(Supp.2)：3 914–3 919.(in Chinese))
[17] GUO Z B，SHI J J，WANG J，et al. Double-directional control bolt support technology and engineering application at large span Y-type intersections in deep coal mines[J]. Mining Science and Technology，2009，19(2)：155–159
[18] 高延法，王 波，王 军，等. 深井软岩巷道钢管混凝土支护结构性能试验及应用[J]. 岩石力学与工程学报，2010，29(增1)：2 604–2 609. (GAO Yanfa，WANG Bo，WANG Jun，et al. Test on structural property and application of concrete-filled steel tube support of deep mine and soft rock roadway[J]. Chinese journal of rock mechanics and engineering，2010，29(Supp.1)：2 604–2 609.(in Chinese))
[19] 毕远志，孔一凡，蔡东红，等. 高韧性纤维混凝土在深部软岩巷道支护中的应用[J]. 煤炭学报，2010，35(12)：1 969–1 974.(BI Yuanzhi，KONG Yifan，CAI Donghong. Application of high toughness fibers concrete in deep soft rock roadway[J]. Journal of China Coal Society，2010，35(12)：1 969–1 974.(in Chinese))
[20] 陆士良，王悦汉. 软岩巷道支架壁后充填与围岩关系的研究[J]. 岩石力学与工程学报，1994，13(2)：180–183.(LU Shiliang，WANG Yuehan. The research on afterfilling and surrounding rock of soft rock roadways support wall relation[J]. Chinese Journal of Rock Mechanics and Engineering，1994，13(2)：180–183.(in Chinese))
[21] 尤春安. 巷道金属支架的计算理论[M]. 北京：煤炭工业出版社，2000.(YOU Chun?an. Calculation theory of roadway steel support[M]. Beijing: China coal industry publishing house，2000.(in Chinese)) |
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2015, Vol. 34 
