As a key component of compound TBM, the rock-breaking effect of hob directly affects the construction efficiency and cost. Aiming at the problem of rock-breaking effect of TBM hob under sand and mudstone formation in Chongqing area, the mechanism of rock breaking by TBM hob is studied by numerical simulation and verified by practical application. Firstly, the material model parameters of hob and rock were determined by numerical simulation using ABAQUS software, and the model of hob and rock was constructed, and the analysis steps, contact and interaction were set. Secondly, the rock-breaking mechanism of hob was analyzed systematically. Finally, based on the Chongqing Metro Line 27 project, the application research of a new type of hob based on the mechanism of hob rock breaking was carried out. The results show that: The numerical simulation results are consistent with the prediction results based on CSM model, which verifies the accuracy of the numerical simulation results. It is revealed that the mechanism of hob rock breaking in Chongqing sand and mudstone formation is compression-shear failure. The rock-breaking effect of a new type of hob based on the mechanism of hob breaking is proved. The research results provide important theoretical basis and technical support for the selection and application of hob in shield construction in Chongqing sand and mudstone stratum, and have important significance for promoting the development of shield construction technology.
Jin Li'an
,
Wang Bo
,
Yang Wenhui
,
Kong Zhongwei
,
Liu Youyong
. Research on the Rock-Breaking Mechanism of Bottom Plate Hob in Sand and Mudstone Formation[J]. Chinese Journal of Underground Space and Engineering, 2025
, 21(S1)
: 165
-173
.
DOI: 10.20174/j.JUSE.2025.S1.20
[1] 李云燕, 蔡欣珂, 王艳红. 我国城市深部地下空间开发挑战与发展战略[J]. 地下空间与工程学报, 2025, 21(1): 1-15,69.
[2] 徐雅洁, 陈湘生. 地铁域地下空间综合开发研究现状与展望[J]. 地下空间与工程学报, 2023, 19(1): 1-12,21.
[3] 黄舰. 青岛地铁区间隧道双护盾TBM地质适应性分析[J]. 现代隧道技术, 2016, 53(3): 42-46.
[4] 彭辉, 邹光炯, 陈柏全, 等.复合式 TBM 在重庆地铁工程中的应用[J]. 都市快轨交通, 2017, 30(1): 70-76.
[5] 王俊. 复合式TBM在重庆地铁实践中的关键技术研究[J]. 现代隧道技术, 2011, 48(6): 88-93.
[6] 郑永光, 杨妹. 典型地层下TBM滚刀刀座系统振动特性实验研究[J]. 工程设计学报, 2024, 31(2): 263-270.
[7] 刘泉声, 潘玉丛, 孔晓璇, 等. TBM滚刀贯入过程中泥岩破坏特征试验研究[J]. 岩土力学, 2016, 37(增1): 166-174.
[8] 闫长斌, 石雨萱, 李严, 等. 基于岩碴比表面积的完整岩体TBM破岩效率分析[J]. 铁道科学与工程学报, 2025, 22(1): 456-468.
[9] 张桂菊, 谭青, 劳同炳. TBM盘形滚刀切削力学模型分析[J]. 中南大学学报(自然科学版), 2020, 51(10): 2792-2799.
[10] 曹久磊, 俞缙, 张竹清, 等. 考虑破岩模式的TBM滚刀破岩力计算模型[J]. 煤炭学报, 2023, 48(8): 3300-3311.
[11] Entacher M, Rostami J. TBM performance prediction model with a linear base function and adjustment factors obtained from rock cutting and indentation tests[J]. Tunnelling and Underground Space Technology, 2019, 93:103085.
[12] 江永旺. 重庆岩质地层TBM滚刀破岩力学行为及掘进效能研究[D]. 成都:西南交通大学, 2022.
[13] 虞和济, 金国栋, 苏禾. 盘形滚刀破岩机理的有限元分析[J]. 东北工学院学报, 1981(3): 79-88.
[14] 赵学彬. 盾构刀具堆焊层设计与性能研究[D]. 北京: 北京工业大学, 2007.
[15] 但眧旺. 硬岩地层中滚刀失效分析及适应性选型方法[J]. 中国铁路, 2021(10): 138-145.
[16] 张照煌. 全断面岩石掘进机平面刀盘上盘形滚刀磨损研究[J]. 现代隧道技术, 2007, 44(6): 32-36.
[17] Frenzel C, Käsling H, Thuro K. Factors influencing disc cutter wear[J]. Geomechanik Und Tunnelbau, 2010, 1(1): 55-60.
[18] Kang E M, Kim Y M, Hwang I J, et al. A study on the damage of cutter bit due to the rotation speed of shield TBM cutter head in mixed ground[J]. Journal of Korean Tunneling and Underground Space Association, 2015, 17(3): 403-413.
[19] 段文军, 李贞, 王好平. 盾构滚刀材料表面镍基碳化钨涂层摩擦学性能研究[J]. 表面技术, 2021, 50(1): 313- 321, 365.
[20] 李贞, 刘之毅, 高睿恒. 针对不同岩层的盾构滚刀研制[J]. 中国机械, 2024(35): 68-71.
