A Method to Predict Disc Cutter Specific Energy for TBM Based on CSM Model

Li, Gang; Zhu, Lei; Yang, Jian; Wang, Wan Shan

doi:10.4028/www.scientific.net/amm.236-237.414

Cited by 5 publications

(4 citation statements)

References 5 publications

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“…Reducing the TBM energy consumption during long-distance tunnel excavation is extremely significant for reducing engineering costs. The TBM energy consumption is usually described by the tunnelling specific energy E s , which can be expressed as follows (Li et al, 2012):…”

Section: Intelligent Decision-making Methods Driven By Physics and Datamentioning

confidence: 99%

Intelligent tunnelling robot system for deep-buried long tunnels

Zhang

Zhu

et al. 2023

Front. Earth Sci.

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Existing tunnel boring machine (TBM) construction presents certain shortcomings. These include difficulty in comprehensive perception of information, poor timelines of information transmission and storage systems, significant effects of traditional data processing methods on the timeless of intelligent decision-making, and poor applicability of decision-making models and control strategies. In addition, the integration level of perception, decision-making, and control should be further improved. Therefore, a cross-platform deployable intelligent tunnelling robot system with closed-loop intelligent control functions of a “comprehensive perception, dual-driven decision-making, and composite intelligent control” is developed. Based on fieldbus, communication, database, cloud computing, and advanced exploration technologies, a multi-source information perception and integrated management platform based on a two-layer architecture is built to achieve the comprehensive perception of tunnelling information. In addition, an optimal decision-making method of the particle swarm optimisation (PSO) algorithm is simultaneously proposed for the minimum decision-making of tunnelling specific energy for scientific analyses and decision-making. A composite intelligent control strategy comprising multimodal and expert experienced learning control strategies is designed to achieve the control of conventional and unfavourable geological sections, respectively. Engineering cases verified the effectiveness and reliability of the intelligent tunnelling robot system. The research results not only provide new ideas and technical means for achieving the less-manned, unmanned, and intelligent tunnelling construction of deep-buried long tunnels but can also be promoted owing to its universality.

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Section: Intelligent Decision-making Methods Driven By Physics and Datamentioning

confidence: 99%

Intelligent tunnelling robot system for deep-buried long tunnels

Zhang

Zhu

et al. 2023

Front. Earth Sci.

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“…It is based D r a f t on the mathematical model and has been verified by a large number of experiments with the linear cutting experimental platform. It has high accuracy and can be used to estimate the resultant force in the working process of the disc cutter (Rostami 2013 andLi et al 2014). The specific force model is shown as follow:…”

Section: The Force Model Of Disc Cuttermentioning

confidence: 99%

Contact stress analysis of disc cutter peg-hole with interference fit

Zhang

et al. 2019

Transactions of the Canadian Society for Mechanical Engineering

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To study the relation of the interference fit between cutter body and cutter ring, a theoretical design of interference fit of the cutter peg-hole is carried out according to the theory of thick-walled cylinders. The finite element method is used to analyzed the mapping relationship between the contact stress of cutter ring and cutter body. Thermal expansion assembly of the cutter ring is simulated, and the temperature of the thermal expansion assembly of the cutter ring is determined. The result shows that the contact length between the cutter body and the cutter ring has little influence on the contact stress of the cutter ring, but with increasing contact length the stress concentration of the retaining ring will increase. The contact stress of the cutter ring is basically the same at the same amount of interference and temperature, but the contact stress of the ring decreases with increasing contact length at high temperature. When the contact length is the same, the contact stress and the radial force of the mating surface increase with increasing amount of interference. The reasonable temperature for thermal expansion assembly of the cutter ring is 160 °C.

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“…The aim is to improve the stress concentration caused by the abrupt change in the size of the ring edge. From the literature [20], we can know that the rock breaking capacity of disc cutters is related to the rock breaking angle, and the rock breaking angle is about 140° usually in order to improve the sharpness of the cutter ring which leads to the crack of rock propagation and coalescence easy. According to the project of rock high abrasion and no joint development status designed a small edge angle structure of the cutter ring as shown in Fig.…”

Section: Structure Design Of Cutter Ringmentioning

confidence: 99%

Experiment and analysis of the rock breaking characteristics of disc cutter ring with small edge angle in high abrasive grounds

Nie

et al. 2018

J Braz. Soc. Mech. Sci. Eng.

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At present, the constant cross section (CCS) disc cutter with flat edge is widely used in TBM tunnelling project. But the problem of serious wear and low rock breaking efficiency appeared when the CCS disc cutter was driven into the high abrasive stratum. The disc cutter with small edge angle is designed in order to enhance the service life of the disc cutter in this paper. The simulation of the two kinds of cutter rings rock breaking were done based on the theoretical analysis used the theoretical model of CSM. It is found that the small edge angle cutter ring has good penetration and its performance is better than that of the flat edge cutter ring in high abrasive strata. The small edge angle cutter ring structure suitable for soft rock formation. The flat edge cutter ring has better performance in hard rock formation condition and is superior to the small edge angle cutter ring structure. The simulation results are consistent with the theoretical analysis. In the end, two different disc cutters having small edge angle and flat edge cutter ring, respectively, are used in the field cutting experiments performed by the authors of this study. The experiment results indicate that the small edge angle cutter ring wear faster than the flat edge cutter ring in the early stage of tunnelling, but it has higher driving efficiency, at the same time, prone to the phenomenon of edge collapse. Along with the advancing distance was lengthened, the excavating performance of small edge angle cutter ring is better after the edge angle wear flattened, and the service life than that of flat edge cutter ring slightly longer. The research results can provide a theoretical basis for the geological adaptability design of disc cutter in high abrasive grounds.

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A Method to Predict Disc Cutter Specific Energy for TBM Based on CSM Model

Cited by 5 publications

References 5 publications

Intelligent tunnelling robot system for deep-buried long tunnels

Intelligent tunnelling robot system for deep-buried long tunnels

Contact stress analysis of disc cutter peg-hole with interference fit

Experiment and analysis of the rock breaking characteristics of disc cutter ring with small edge angle in high abrasive grounds

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