围压对TBM滚刀破岩影响机制研究

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (5213 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要穿越高大山体的隧道TBM施工不可避免地会遇到高地应力问题，研究地应力对TBM滚刀破岩机制和掘进效率的影响具有重大的工程价值和科学意义。通过理论分析和UDEC数值模拟技术对围压作用下滚刀破岩模式进行研究，发现围压对滚刀破岩过程影响比较复杂：围压对粉碎区深度和裂纹扩展区内滚刀作用方向的裂纹扩展起到抑制作用；而对围压作用方向的裂纹扩展有促进作用，表现为边裂纹的扩展范围会更大，扩展路径会更加平直，发展更加迅速，滚刀间岩片的形成更加容易。TBM现场掘进试验表明，地应力越高，围压作用越明显，TBM破岩更加容易，掘进效率会更高。从TBM滚刀作用下岩片形成的难易程度角度考虑，理论分析、数值模拟和TBM现场掘进试验都表明围压作用促进TBM滚刀破岩。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章

关键词 ：隧道工程, TBM, 滚刀, 破岩机制, 围压, 地应力

Abstract：TBM tunnels through the high mountain will inevitably encounter high stress problem，and the research on the influence mechanism of high stress on TBM breakage is very important. The influence of confining pressure on rock fragmentation by TBM cutters is successfully studied by using mechanical analysis and numerical simulation，and it implies that the impact of confining pressure is very complicated. The depths of crushed zone and lengths of cracks parallel to normal force decrease with increasing confining pressure，but confining pressure facilitates rock fragmentation and promotes chipping process，and the side cracks will develop rapidly and smoothly. The TBM in-situ penetration experiment shows that the rock is excavated more easily by TBM with increasing confining pressure. Considering the difficulty of rock chipping by TBM cutters，the results of mechanical analysis and numerical simulation and TBM in-situ penetration experiment all prove that confining pressure is favorable to TBM cutter breakage and penetration.

Key words： tunneling engineering TBM cutter rock breakage mechanism confining pressure in-situ stress

收稿日期: 2013-05-27

引用本文:

彭琦1，2，3，4. 围压对TBM滚刀破岩影响机制研究[J]. 岩石力学与工程学报, 2014, 33(sl): 2743-2749.
PENG Qi1，2，3，4. RESEARCH ON INFLUENCE MECHANISM OF CONFINING PRESSURE ON ROCK BREAKAGE BY TBM CUTTERS. , 2014, 33(sl): 2743-2749.

链接本文:

http://www.rockmech.org/CN/Y2014/V33/Isl/2743

[7]	HAMIDI J K，SHAHRIAR K，REZAI B，ROSTAMI J. Performance prediction of hard rock TBM using rock mass rating(RMR) system[J]. Tunneling and Underground Space Technology，23：333-345. " target="_blank">
[11]	彭琦. TBM滚刀破岩机制和掘进影响因素分析研究[博士学位论文][D]. 四川大学，2011.(PENG Qi. Research on TBM cutter breakage mechanism and influence factors in penetration process[Ph. D. Thesis][D]. Chengdu：Sichuan University，2011.(in Chinese)) " target="_blank">
[13]	中国水电顾问集团华东勘察设计研究院.锦屏辅助洞竣工报告工程地质篇[R]. 杭州：中国水电顾问集团华东勘察设计研究院，2009. (HydroChina Huadong Engineering Corporation. Completion report of assistant tunnel of Jinping hydropower station—engineering geology[R]. Hangzhou：HydroChina Huadong Engineering Corporation，2009.(in Chinese)) " target="_blank">
[3]	李焯芬，王可均. 高水平地应力对岩石工程的影响[J]. 岩石力学与工程学报，1996，15(1)：26-31.(LEE C F，WANG Kejun. Effects of high horizontal in situ stresses on rock engineering[J]. Chinese Journal of Rock Mechanics and Engineering，1996，15(1)：26-31.(in Chinese))
[8]	COOK N G W，HOOD M，TSAI F. Observations of crack growth in hard rock loaded by an indenter[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1984，21(2)：97-107. " target="_blank">
[1]	蔡美峰，何满朝，刘东燕. 岩石力学与工程[M]. 北京：科学出版社，2006.(CAI Meifeng，HE Manchao，LIU Dongyan. Rock mechanics and engineering[M]. Beijing：Science Press，2006.(in Chinese)) " target="_blank">
[2]	谢和平. 深部高应力下的资源开采现状、基础科学问题与展望[M]. 北京：中国环境科学出版社，2002.(XIE Heping. Resources development under high ground stress：present state basic science problems and perspective[C]// Proceedings of the 175th Xiangshan Science Congress. Beijing：China Environmental Science Press，2002：179-191.(in Chinese)) " target="_blank">
[4]	张传庆，冯夏庭，周辉，等. 深部试验隧洞围岩脆性破坏及数值模拟[J]. 岩石力学与工程学报，2010，29(10)：2 063-2 068. (ZHANG Chuanqing，FENG Xiating，ZHOU Hui，et al. Brittle failure of surrounding rock mass in deep test tunnels and its numerical simulation[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(10)：2 063-2 068.(in Chinese))
[5]	江权，冯夏庭，陈国庆. 考虑高地应力下围岩劣化的硬岩本构模型研究[J]. 岩石力学与工程学报，2008，27(1)：144-152.(JIANG Quan，FENG Xiating，CHEN Guoqing. Study on constitutive model of hard rock considering surrounding rock deterioration under high geostresses[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(1)：144-152.(in Chinese))
[6]	向天兵，冯夏庭，江权，等. 大型洞室群围岩破坏模式的动态识别与调控[J]. 岩石力学与工程学报，2011，30(5)：871-883. (XIANG Tianbing，FENG Xiating，JIANG Quan，et al. Failure mode dynamic recognition and control for surrounding rock of large-scale cavern group[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(5)：871-883.(in Chinese))
[9]	LIU H Y，KOU S Q，LINDQVIST P A. Numerical studies on bit-rock fragmentation mechanisms[J]. International Journal of Geomechanics， 2008，8(1)：45-67. " target="_blank">
[10]	INNAURATO N，OGGERI C，ORESTE P P，et al. Experimental and numerical studies on rock breaking with TBM tools under high stress confinement[J]. Rock Mechanics and Rock Engineering，2007，40(5)：429-451.
[12]	李宏哲，夏才初，闫子舰，等. 锦屏水电站大理岩在高应力条件下的卸荷力学特性研究[J]. 岩石力学与工程学报，2007，26(10)：2 104-2 109.(LI Hongzhe，XIA Caichu，YAN Zijian，et al. Study on marble unloading mechanical properties of Jinping hydropower station under high geostress conditions[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(10)：2 104-2 109.(in Chinese)) " target="_blank">
[15]	龚秋明，佘祺锐，侯哲生，等. 高地应力作用下大理岩岩体的TBM掘进试验研究[J]. 岩石力学与工程学报，2010，29(12)：2 522-2 532. (GONG Qiuming，SHE Qirui，HOU Zhesheng，et al. Study on TBM penetration tests in marble rock masses with high in situ stress[J]. Chinese Journal of Rock Mechanics and Engineering，2010，12：2 522-2 532.(in Chinese)) " target="_blank">
[16]	INNAURATO N，ORESTE P .Theoretical study on the TBM tool-rock interaction[J]. Geotechnical and Geological Engineering，2011，29(3)：297-30
[14]	CHIAIA B. Fracture mechanisms induced in a brittle material by a hard cutting indenter[J]. International Journal of Solids and Structure，2001，38：7 747-7 768. " target="_blank">