围压对TBM滚刀破岩影响规律的线性切割试验研究

doi:10.13722/j.cnki.jrme.2014.0926

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摘要随着TBM技术在深埋隧道工程领域的应用及发展，TBM开挖过程中由高埋深或各向异性引起的岩石应力问题越来越受到人们的重视。应用北京工业大学自行研制的大型机械破岩试验平台，对4组双向等围压水平下(0，5，10和15 MPa)的大尺寸(1.0 m×1.0 m×0.6 m)北山花岗岩岩样进行线性切割试验，研究不同围压条件下滚刀破岩时作用力的曲线特征，分析围压对滚刀法向力、滚动力、岩体特征掘进指数、破岩岩片厚度和破岩比能的影响效应，并探讨围压对TBM现场掘进速率的影响。研究结果可为不同地应力条件下TBM开挖时刀盘动力参数设计与施工运行参数优化提供参考。

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关键词 ：隧道工程, 全断面掘进机, 围压, 花岗岩, 全尺寸线性切割试验, 掘进速率

Abstract：In deep tunnel construction，TBM faces the rock stress problems induced by overburden or anisotropic stress，which had been under more and more attention. In this paper，full-scale cutting tests are presented to investigate the effect of different confining stresses，i.e. 0，5，10，and 15 MPa，on rock fragmentation of large intact granite sample with dimension of 1.0 m?1.0 m?0.6 m induced by TBM cutter. In these tests，the characteristics of force-time curves，normal forces，rolling forces，specific rock mass boreability index，chipping thickness and specific energy affected by confining stress were analyzed.

Key words： tunnelling engineering tunnel boring machine(TBM) confining stress granite full-scale linear cutting tests penetration rate

引用本文:

马洪素1，龚秋明2，王驹1，赵晓豹3，殷丽君2，苗崇通2，何冠文2. 围压对TBM滚刀破岩影响规律的线性切割试验研究[J]. 岩石力学与工程学报, 2016, 35(2): 346-355.
MA Hongsu1，GONG Qiuming2，WANG Ju1，ZHAO Xiaobao3，YIN Lijun2，MIAO Chongtong2，HE Guanwen2. Linear cutting tests on effect of confining stress on rock fragmentation by TBM cutter . , 2016, 35(2): 346-355.

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http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2014.0926 或 http://www.rockmech.org/CN/Y2016/V35/I2/346

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