加锚岩体侧向冲击载荷下动力响应规律研究

doi:10.13722/j.cnki.jrme.2020.0171

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Abstract Rockbolt support system is an important technical approach to control the dynamic disasters that occurr in deep underground engineering with brittle surrounding rockmass，but the dynamic anchorage theory still lags behind the engineering practice. In this investigation，the indoor similar physical model test was performed to research the dynamic response law of rock mass with anchors under lateral impact loads. The influences of the impact energy and the mechanical characteristics of the anchor on the mechanical behavior of rock mass were analyzed. The test results show that shear and flexural fractures are the mainly mode of the rockmass with anchors，and that the inclined fractures in the middle span at about 45°with the normal direction are dense. The strength and toughness of the rockbolt can inhibit the development of the cracks of the rockmass，especially the connected cracks. The higher the rockbolt strength，the greater the impact absorption energy，the smaller the crack opening of the anchored rockmass，and the stronger the overall energy absorption capacity of the anchored rockmass. The impact velocity and the rockbolt strength affect the impact force of the drop weight and the axial force of the rockbolt. Specifically，the larger the impact velocity is，the larger the platform values of both the impact force and the axial force of the anchored rockmass are，and the shorter the corresponding action time is. The higher the rockbolt strength，the larger the platform value of the impact force，the shorter the impact time and the larger the slope of impact force attenuation. Rockbolt can significantly enhance the peak strain and improve the tensile strain state of the rock surface. Totally，the strength and the toughness of the rockbolt have a significant impact on the impact resistance of the rock mass. The impact resistance of the rock mass can be improved by improving the strength and the toughness of the rockbolt.

Key words： rock mechanics rock burst bolt support anchored rock mass impact load drop hammer test

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	WU Yongzheng1
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	FU Yukai1
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	HAO Dengyun1
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Cite this article:

WU Yongzheng1,2,3, et al. Study on dynamic response law of anchored rock mass under lateral impact loads[J]. , 2020, 39(10): 2014-2024.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2020.0171 OR https://rockmech.whrsm.ac.cn/EN/Y2020/V39/I10/2014

[1]	康红普，吴拥政，何杰，等. 深部冲击地压巷道锚杆支护作用研究与实践[J]. 煤炭学报，2015，40(10)：2 225-2 233.(KANG Hongpu，WU Yongzheng，HE Jie，et al. Rock bolting performance and field practice in deep roadway with rock burst[J]. Journal of China Coal Society，2015，40(10)：2 225-2 233.(in Chinese))
[2]	潘一山，肖永惠，李忠华，等. 冲击地压矿井巷道支护理论研究及应用[J]. 煤炭学报，2014，39(2)：222-228.(PAN Yishan，XIAO Yonghui，LI Zhonghua，et.al. Study of tunnel support theory of rock burst in coal mine and its application[J]. Journal of China Coal Society，2014，39(2)：222-228.(in Chinese))
[3]	国家煤矿安全监察局科技装备司. 全国煤矿冲击地压矿井专项调研报告[R]. 北京：国家煤矿安全监察局科技装备，2017.(Science and Technology Equipment Department of State Administration of Coal Mine Safety. National special investigation report on coal mine rockburst[R]. Beijing：Science and Technology Equipment of State Administration of Coal Mine Safety，2017.(in Chinese))
[4]	姜耀东，赵毅鑫. 我国煤矿冲击地压的研究现状：机制、预警与控制[J]. 岩石力学与工程学报，2015，34(11)：2 188-2 204.(JIANG Yaodong，ZHAO Yixin. State of the art：Investigation on mechanism forecast and control of coal bumps in china[J]. Chinese Journal of Rock Mechanics and Engineering，2015，34(11)：2 188-2 204.(in Chinese))
[5]	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))
[6]	付玉凯，鞠文君，吴拥政，等. 高冲击韧性锚杆吸能减冲原理及应用研究[J]. 煤炭科学技术，2019，47(11)：68-75.(FU Yukai，JU Wenjun，WU Yongzheng，et al. Study on principle application of energy absorption and bump reduction of high impact toughness rock bolt[J]. Coal Science and Technology，2019，47(11)：68-75.(in Chinese))
[7]	康红普. 我国煤矿巷道锚杆支护技术发展60年及展望[J].中国矿业大学学报，2016，45(6)：1 071-1 081.(KANG Hongpu. Sixty years development and prospects of rock bolting technology for underground coal mine roadways in china[J]. Journal of China University of Mining and Technology，2016，45(6)：1 071-1 081.(in Chinese))
[8]	康红普，王金华. 煤巷锚杆支护理论与成套技术[M]. 北京：煤炭工业出版社，2007：176-181.(KANG Hongpu，WANG Jinhua. Bolt support theory and complete set of technology in coal roadway[M]. Beijing：Coal Industry Press，2007：176-181.(in Chinese))
[9]	鞠文君. 冲击矿压巷道锚杆支护原理分析[J]. 煤矿开采，2009，14(3)：59-61.(JU Wenjun. Analysis of supporting principles of anchored-bolt in roadway with burst danger[J]. Coal Mining Technology，2009，14(3)：59-61.(in Chinese))
[10]	吴拥政，何杰，王洋. 特大断面冲击地压巷道破坏机理及控制技术研究[J]. 煤炭科学技术，2018，46(1)：61-67.(WU Yongzheng，HE Jie，WANG Yang. Study on failure mechanism and control technology of large cross section rockburst roadway[J]. Coal Science and Technology，2018，46(1)：61-67.(in Chinese))
[11]	付玉凯，吴拥政，鞠文君，等. 锚杆侧向冲击载荷下动力响应及抗冲击机理[J]. 煤炭学报，2016，41(7)：1 651-1 658.(FU Yukai，WU Yongzheng，JU Wenjun，et al. Response and impact mechanism of rock bolt under lateral dynamic impact load[J]. Journal of China Coal Society，2016，41(7)：1 651-1 658.(in Chinese))
[12]	吴拥政，康红普，丁吉，等. 超高强热处理锚杆开发与实践[J].煤炭学报，2015，40(2)：308-313.(WU Yongzheng，KANG Hongpu，DING Ji，et.al. Development and application of ultrahigh-heat processed rock bolts[J]. Journal of China Coal Society，2015，40(2)： 308-313.(in Chinese))
[13]	何满潮，郭志彪. 恒阻大变形锚杆力学特性及工程应用[J]. 岩石力学与工程学报，2014，33(7)：1 297-1 308.(HE Manchao，GUO Zhibiao. Mechanical property and engineering application of anchor 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]	张彪，张志强，汪波，等. 让压锚杆在大变形隧道支护应用中试验研究[J]. 岩土力学，2016，37(7)：2 047-2 055.(ZHANG Biao，ZHANG Zhiqiang，WANG Bo，et.al. Experimental study of application of yielding bolt to large deformation tunnel[J]. Rock and Soil Mechanics，2016，37(7)：2 047-2 055.(in Chinese))
[15]	VARDEN R，LACHENICHT R，PLAYER J，et al. Development and implementation of the garford dynamic bolt at the Kanowna Belle Mine[C]// The 10th Underground Operators′ Conference. Launceston，Australia：[s. n.]，2008：19.
[16]	CHARETTE F，PLOUFFE M. Roofex-results of laboratory testing of a new concept of yieldable tendon[C]// Proceedings of the 4th International Seminar on Deep and High Stress Mining. Perth：Australian Centre for Geomechanics，2007：395-404.
[17]	LI C C. A new energy-absorbing bolt for rock support in high stress rock masses[J]. International Journal of Rock Mechanics and Mining Sciences，2010，47(3)：396-404.
[18]	ANDERS A. Laboratory testing of a new type of energy absorbing rock bolt[J]. Tunnelling and Underground Space Technology，2005，20(4)：291-300.
[19]	ANDERS A. Dynamic testing of steel for a new type of energy absorbing rockbolt[J]. Journal of Constructional Steel Research，2006，62(5)：501-512.
[20]	CAI M，CHAMPAIGNE D，COULOMBE J G，et al. Development of two new rockbolts for safe and rapid tunneling in burst-prone ground[J]. Tunnelling and Underground Space Technology，2019，91：1-11.
[21]	TAO ZHIGANG，ZHAO FEI，WANG HONGJIAN，et al. Innovative constant resistance large deformation bolt for rock support in high stressed rock mass[J]. Arabian Journal of Geosciences，2017，10(15)：1-15.
[22]	王斌，宁勇，冯涛，等. 单轴压缩条件下锚杆影响脆性岩体破裂的细观机制[J]. 岩土工程学报，2018，40(9)：1 593-1 600. (WANG Bin，NING Yong，FENG Tao，et al. Meso-mechanism of rock failure influenced by bolt anchorage under uniaxial compression loading[J]. Chinese Journal of Geotechnical Engineering，2018，40(9)：1 593-1 600.(in Chinese))
[23]	余伟健，吴根水，刘泽，等. 煤-岩-锚组合锚固体单轴压缩试验及锚杆力学机制[J]. 岩石力学与工程学报，2020，39(1)：57-68.(YU Weijian，WU Genshui，LIU Ze，et al. Uniaxial compression test of coal-rock-bolt anchorage body and mechanical mechanisms of bolts[J]. Chinese Journal of Rock Mechanics and Engineering，2020，39(1)：57-68.(in Chinese))
[24]	LI L，HAGAN P C，SAYDAM S，et al. A laboratory study of shear behaviour of rockbolts under dynamic loading based on the drop test using a double shear system[J]. Rock Mechanics and Rock Engineering，2019，52(9)：3 413-3 429.