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波动推力引起的超孔压对开挖面稳定性的影响分析 被引量:1

Effect analysis of excess pore water pressure on face stability caused by thrust undulation
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摘要 盾构施工过程中地质条件变化、刀盘旋转切割土体、停盾拼装管片等因素会造成开挖面推力的波动,从而在开挖面前方产生超孔压,此超孔压对开挖面稳定性的影响需进行分析。首先通过建立分层土分析模型,结合太沙基固结理论,得到开挖面前方超孔压的计算方法;进而采用楔形体模型,给出超孔压对开挖面稳定性影响的计算方法。计算结果显示超孔压将显著降低开挖面的安全系数,因此在开挖面最小支护力的计算中需考虑推力波动变化的影响。最后通过参数分析给出了不同工况下产生的超孔压及其对开挖面安全系数影响的大小,为盾构施工参数的制定提供了参考。 In shield tunnlling there are many factors can affect the stability of the thrust force such as the changes of geology conditions, soil cutting by the cutter head, and the regular stop of the shield for segment assembly. The excess pore water pressure caused by the fluctuations force can be accumulated so large that the stability of the tunnel face could be affected. The layered soil analysis model was established at first and the calculation method of the excess pore water pressure near tunnel face was obtained by combining the Terzaghi's one-dimensional consolidation theory. Then the calculation method of the effect of the excess pore water pressure on the tunnel face stability was given out using the wedge analysis model. From the calculation result it can be concluded that the safety factor of tunnel face can be reduced by the excess pore water pressure. So the effect of the fluctuations thrust force should be considered in the calculation of the minimum support face pressure. At last the excess pore water pressure and the decreasing coefficient of safety factor with different construction conditions were given out through parameter analysis.
作者 宋锦虎 陈坤福 马元 安利彬 SONG Jinhu, CHEN Kunfu, MA Yuan, AN Libin (1. School of Civil Engineering, Henan University of Urban Construction, Pingdingshan, Henan 467044, China; 2. School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China: 3. Shanghai Tunnel Engineering Construction Co., Ltd., Shanghai 200080, China)
出处 《岩石力学与工程学报》 EI CAS CSCD 北大核心 2016年第A01期3353-3364,共12页 Chinese Journal of Rock Mechanics and Engineering
基金 国家自然科学基金资助项目(51404255)
关键词 隧道工程 开挖面推力 波动变化 超孔压 开挖面稳定 流固耦合 tunnelling engineering tunnel face thrust fluctuation change pore water disturbance face stability coupled mechanical and hydraulic
作者简介 宋锦虎(1984-),男,博士,2005年毕业于中国矿业大学土木工程专业,现任讲师,主要从事地下结构支护方面的研究工作。E-mail:cumtsong@163.com。 通讯作者:陈坤福(1979-),男,博士,现任副教授,主要从事复杂应力环境下隧道支护方面的研究工作。E-mail:chenktmfu@cumt.edu.cn
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  • 1BROMS B B, BENNERMARK H. Stability of clay at vertical openings[J]. JoumaI of the Soil Mechanics and Foundations Division ASCE, 1967, 96(1): 7l-94. 被引量:1
  • 2ANAGNOSTOU G, KOVARI K. The face stability of slurry-shield-driven tunnels[J]. Tunneling and Underground Space Technology, 1994 9(2): 165 - 174. 被引量:1
  • 3JANCSECZ S, STEINER W. Face support for a large mix-shield in heterogeneous ground conditions[C]//Proceedings of the Symposium Tunnelling94. [S.1.]: [s.n.], 1994:531 - 550. 被引量:1
  • 4朱伟 ,秦建设 ,卢廷浩 .砂土中盾构开挖面变形与破坏数值模拟研究[J].岩土工程学报,2005,27(8):897-902. 被引量:74
  • 5MAYNAR M, RODRJGUEZ L. Discrete numerical model for analysis of earth pressure balance tunnel excavation[J]. Journal of Geotechnical and Oeoenvironmental Engineering, 2005, 131(10): 1 234 - 1 242. 被引量:1
  • 6周文波编著..盾构法隧道施工技术及应用[M].北京:中国建筑工业出版社,2004:347.
  • 7肖立,张庆贺,朱继文,姚海明.盾构施工引起的超孔隙水压力解析解[J].同济大学学报:自然科学版,2011,39(2):194-198. 被引量:6
  • 8CHEN R P, ZHU J, LIU W. Ground movement induced by parallel EPB tunnels in silty soils[J]. Tunnelling and Underground Space Technology, 2011, 26(1): 163- 171. 被引量:1
  • 9MROUEH H, SHAHROUR I. A simplified 3D model for tunnel construction using tunnel boring machines[J]. Tunnelling and Underground Space Technology, 2008, 23(1): 38 - 45. 被引量:1
  • 10KASPER T, MESCHKE G. On the influence of face pressure grouting pressure and TBM design in soft ground tunnelling[J] Tunnelling and Underground Space Technology, 2006, 21(1): 160 - 171. 被引量:1

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