Experimental and Numerical Investigations on Rock Breaking of TBM Disc Cutter Based on a Novel Platform with Rotational Cutting

Deng, Long-Chuan; Zhang, Fu-Bing; Li, Xiaozhao; Zhang, Chi; Ji, Yukun; Wu, Yun

doi:10.1007/s00603-022-03147-5

Cited by 12 publications

(2 citation statements)

References 25 publications

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“…Wen et al [48] investigated the cutting performance of the disc cutter and analyzed the force under composite stratum conditions. Deng et al [58] developed a new type of rotary cutting platform, which can realize rotary cutting up to a diameter of 3.3 m.…”

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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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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“…Mechanical excavation has become the mainstream technology for underground construction, and has been widely applied to river crossings, road tunnels, metro tunnels, mining projects and so on (Deng et al 2022a(Deng et al , 2022b. Cutters, a quiet important part in the excavation machine, contact directly with the rocks.…”

Section: Introductionmentioning

confidence: 99%

Rock abrasiveness prediction based on multi-source physical, mechanical and mineralogical properties

Wu,

Li,

Deng

et al. 2024

Preprint

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Rock abrasiveness is a vital parameter that affects cutter wear, tunneling efficiency, and cost budgeting during mechanical excavation. The Cerchar abrasivity index (CAI), a suggested standard parameter to characterize the rock abrasiveness, can be obtained through the laboratory test. Understanding the correlations between the CAI and physical, mechanical, and mineralogical properties helps to precisely evaluate the cutter wear and improve the excavation efficiency. In this study, 27 groups of rock samples collected from around the country were determined to establish the correlations between the CAI and 17 commonly used rock parameters using simple regression and multiregression. Based on PCC results, the possibility of linear relationships between CAI and 17 rock physical, mechanical, and mineralogical parameters was analyzed for determining the appropriate model. Subsequently, simple linear regression and Boltzmann models were developed based on physical and mechanical parameters, the model based on the porosity showed the excellent forecasting performance over other models. Through the analysis on the coefficient of determination (R2) value, a better multiregression model (R2=0.922) based on the mechanical parameters was obtained, but a more feasible model (R2=0.912) based on the thermal conductivity, diffusion coefficient, elastic modulus, and Rock Abrasivity Index (RAI) was also suggested after consideration of the simplicity and period of parameter measurement. After classification of rock types, the linear correlations strengthened significantly especially for the mineralogical properties, the CAI showed a linear correlation with equivalent quartz content (EQC) and RAI for the granite and sandstone, the quartz content (Q) still showed no relation with CAI.

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Grain-Based Modeling for Heterogeneous Rock Fragmentation Under Stressed Conditions and TBM Cutter Spacing Optimization

Yang,

Tao,

Yin

et al. 2024

Rock Mech Rock Eng

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Experimental and Numerical Investigations on Rock Breaking of TBM Disc Cutter Based on a Novel Platform with Rotational Cutting

Cited by 12 publications

References 25 publications

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

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

Rock abrasiveness prediction based on multi-source physical, mechanical and mineralogical properties

Grain-Based Modeling for Heterogeneous Rock Fragmentation Under Stressed Conditions and TBM Cutter Spacing Optimization

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