卡姆奇克隧道岩爆的力学机制及主动防控技术

doi:10.13722/j.cnki.jrme.2019.0829

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Abstract Based on the comprehensive analysis of the geostress characteristics，rockburst process and characteristics of the Kamchik tunnel known as the longest tunnel in Central Asia，a mechanical model of rockbursts is established，and an advanced support technology for active rockburst controlling is proposed. The study shows that，due to that the maximum principal stress of the geostress in the tunnel site is horizontal and close to the tunnel axis and that the tangential stress of the vault is maximal after tunnel excavation，rockbursts mainly occur near the vault in the Kamchik tunnel. The process of the rockburst can be divided into three stages including splitting of the vault rock，brittle fracturing of rock slabs and block ejecting. The mechanics model of rockbursts can be simplified as brittle fracture instability of a bedded rock plate of the vault under horizontal forces. The critical horizontal stress scr of the brittle fracture instability of the rock plate is inversely proportional to the square of the unsupported length L of the rock plate but proportional to the square of the thickness t of the rock plate. The mechanical model can well explain the occurrence and main performance characteristics of rockbursts in Kamchik tunnel. On this basis，an advanced support technology by reducing the unsupported length of the vault slab and increasing the thickness of the rock slab to increase the critical stress of brittle fracture instability，was developed for active preventing and weakening rockbursts. Applications of the technology in Kamchik tunnel indicate that the effect is remarkable.

Key words： rock mechanics tunnel rockburst mechanical mechanism brittle fracture advanced support technology active control

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	Articles by authors
	LIU Chengyu1
	2
	LI Hongjun3
	WU Yin2

Cite this article:

LIU Chengyu1,2,LI Hongjun3, et al. Mechanical mechanism and active control technology of rockbursts #br# in Kamchik tunnel#br#[J]. , 2020, 39(5): 961-970.

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http://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2019.0829 OR http://rockmech.whrsm.ac.cn/EN/Y2020/V39/I5/961

[4]	MUELLER W. Numerical simulation of rock bursts[J]. Mining Science and Technology，1991，12(1)：27-42.
[17]	徐芝纶. 弹性力学[M]. 第5版. 北京：高教出版社，2015：109-127.(XU Zhilun. Elastic mechanics[M]. 5th ed. Beijing：Higher Education Press，2015：109-127.(in Chinese))
[3]	李桐，冯夏庭，王睿，等. 深埋隧道岩爆位置偏转及其微震活动特征[J]. 岩土力学，2019，40(7)：1-9.(LI Tong，FENG Xiating，WANG Rui，et al. Deflection of rockburst position and characteristics of microseismic activity in deep tunnel[J]. Rock and Soil Mechanics，2019，40(7)：1-9.(in Chinese))
[1]	宫凤强，闫景一，李夕兵. 基于线性储能规律和剩余弹性能指数的岩爆倾向性判据[J]. 岩石力学与工程学报，2018，37(9)：1 993- 2 014.(GONG Fengqiang，YAN Jingyi，LI Xibing. Rockburst tendency criterion based on linear energy storage law and residual elastic energy index[J]. Chinese Journal of Rock Mechanics and Engineering，2018，37(9)：1 993-2 014.(in Chinese))
[5]	钱七虎. 地下工程建设安全面临的挑战与对策[J]. 岩石力学与工程学报，2012，31(10)：1 945-1 956.(QIAN Qihu. Challenges faced by underground projects construction safety and countermeasures[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(10)：1 945-1 956.(in Chinese))
[7]	汪洋，王继敏，尹健民，等. 基于快速应力释放的深埋隧洞岩爆防治对策研究[J]. 岩土力学，2012，33(2)：547-553.(WANG Yang，WANG Jiming，YIN Jianmin，et al. Research on prevention and control measures of rock burst in deep tunnel based on rapid stress release[J]. Rock and Soil Mechanics，2012，33(2)：547-553.(in Chinese))
[11]	江飞飞，周辉，刘畅，等. 地下金属矿山岩爆研究进展及预测与防治[J]. 岩石力学与工程学报，2019，38(5)：956-972.(JIANG Feifei，ZHOU Hui，LIU Chang，et al. Progress prediction and prevention of rockbursts in underground metal mines[J]. Chinese Journal of Rock Mechanics and Engineering，2019，38(5)：956-972.(in Chinese))
[13]	冯夏庭，陈炳瑞，明华军，等. 深埋隧洞岩爆孕育规律与机制：即时型岩爆[J]. 岩石力学与工程学报，2012，31(3)：433-444.(FENG Xiating，CHEN Bingrui，MING Huajun，et al. Evolution law and mechanism of rockbursts in deep tunnels：immediate rockburst[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(3)：433-444.(in Chinese))
[15]	高谦，乔兰，等. 地下工程系统分析与设计[M]. 北京：中国建材工业出版社，2005：106-109.(GAO Qian，QIAO Lan，et al. Analysis and design of underground engineering system[M]. Beijing：China Building Materials Industry Press，2005：106-109.(in Chinese))
[2]	于洋，冯夏庭，陈炳瑞. 深部岩体隧洞即时型岩爆微震震源体积的分形特征研究[J]. 岩土工程学报，2017，39(12)：2 173-2 179. (YU Yang，FENG Xiating，CHEN Bingrui. Fractal characteristics of the source volume of instant rockburst microseismic in deep rock mass tunnel[J]. Chinese Journal of Geotechnical Engineering，2017，39(12)：2 173-2 179.(in Chinese))
[6]	吴世勇，周济芳，杜成波. 基于爆破卸压地应力快速释放的强岩爆防治方法与效果评价研究[J]. 工程科学与技术，2018，50(4)：22-29.(WU Shiyong，ZHOU Jifang，DU Chengbo. Study on prevention and control method of strong rock burst based on rapid release of blasting pressure relief ground stress[J]. Engineering Science and Technology，2018，50(4)：22-29.(in Chinese))
[12]	冯夏庭，张传庆，陈炳瑞，等. 岩爆孕育过程的动态调控[J]. 岩石力学与工程学报，2019，38(5)：956-972.(FENG Xiating，ZHANG Chuanqing，CHEN Bingrui，et al. Dynamical control of rockburst evolution process[J]. Chinese Journal of Rock Mechanics and Engineering，2019，38(5)：956-972.(in Chinese))
[8]	陈炳瑞，冯夏庭，明华军，等. 深埋隧洞岩爆孕育规律与机制：时滞型岩爆[J]. 岩石力学与工程学报，2012，31(3)：561-569.(CHEN Bingrui，FENG Xiating，MING Huajun，et al. Evolution law and mechanism of rockburst in deep tunnel：time delayed rockburst[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(3)：561-569.(in Chinese))
[9]	王斌，李夕兵，马春德，等. 岩爆灾害控制的动静组合支护原理及初步应用[J]. 岩石力学与工程学报，2014，33(6)：1 169-1 178. (WANG Bin，LI Xibing，MA Chunde，et al. Principle and preliminary application of combined static-dynamic support to rockburst disaster controlling[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(6)：1 169-1 178.(in Chinese))
[14]	刘佑荣，唐辉明. 岩体力学[M]. 北京：化学工业出版社，2008：219-220.(LIU Yourong，TANG Huiming. Rock mechanics[M]. Beijing：Chemical Industry Press，2008：219-220.(in Chinese))
[10]	陈国庆，冯夏庭，张传庆，等. 深埋硬岩隧洞开挖诱发破坏的防治对策研究[J]. 岩石力学与工程学报，2008，27(10)：2 064-2 071. (CHEN Guoqing，FENG Xiating，ZHANG Chuanqing，et al. Research on prevention measures for failure induced by tunneling in deep hard rock[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(10)：2 064-2 071.(in Chinese))
[16]	李广平. 岩体的压剪损伤机制及其在岩爆分析中的应用[J]. 岩土工程学报，1997，19(6)：49-55.(LI Guangping. The mechanism of compression-shear damage for rock mass with its application to rockburst[J]. Chinese Journal of Geotechnical Engineering，1997，19(6)：49-55.(in Chinese))