A peridynamics study for the free-surface-assisted rock fragmentation caused by TBM disc cutters

Shang, Xiaonan; Zhou, Jian; Liu, Fushen; Shen, Jian; Liao, Xingchuan

doi:10.1016/j.compgeo.2023.105380

Cited by 7 publications

(1 citation statement)

References 54 publications

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“…Numerical simulation can both highly restore the dynamic process of disc cutter breaking rock, and make up for the shortcomings of high cost and poor repeatability of indoor tests. Commonly used numerical analysis methods to simulate the rock breaking of a disc cutter include FEM [59], the GPD method [60], FEM-SPH [61], FEM-DEM [62], 3DEC [63], FLAC3D [5], RBD-DEM [64], PFC3D [65,66], MatDEM [67], and Peridynamics [68]. Although the basic disc cutter force can be obtained by linear cutting test, the rockbreaking method used in the test is different from the rotary cutting of the disc cutter in the actual project.…”

Section: The External Excitationmentioning

confidence: 99%

Review on Vibration Monitoring and Its Application during Shield Tunnel Construction Period

Yang,

Fang,

Wang

et al. 2024

Buildings

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With the rapid development of metro construction, shield machines inevitably have to traverse a variety of complex geological conditions, leading to the frequent occurrence of geological disasters, equipment failures, building vibration and other problems. Vibration, as an important feature of the shield tunneling process, has received more and more attention in recent years. This paper summarizes the relevant research progress of vibration monitoring during shield construction from 2015 to 2023. It analyzes the shield vibration generation mechanism, monitoring methods and application areas. Firstly, the shield vibration type is divided into mechanical vibration triggered by internal excitation and forced vibration triggered by external excitation, and the principles of vibration generated by shield main bearing, gearbox and disc cutter are discussed. Then, the commonly used vibration monitoring methods are outlined according to the installation location of the sensors (inside and outside of the shield). Finally, the applications of vibration signals in the diagnosis of shield faults, the identification of geologic conditions, and the evaluation of the current status of the interference with the buildings are summarized. This paper discusses the development trend of vibration monitoring during shield tunneling based on the current research situation and the current technology level, which provides valuable insights to enhance the safety and intelligence of shield construction.

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