Development and in-situ application of a real-time monitoring system for the interaction between TBM and surrounding rock

Huang, Xing; Liu, Quangsheng; Li, He; Zhang, Penglin; Pan, Shaolin; Zhang, Xiaoping; Fang, Jingnian

doi:10.1016/j.tust.2018.07.018

Cited by 64 publications

(16 citation statements)

References 32 publications

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“…Lan (Lan, 2016;Lan, 2019) and others realized detection of cutter wear and speed with an eddy-current sensor solution. Liu and Huang (Huang, 2018) developed TBM cutter wear test systems one after another, but there were still many problems in application. So far there hasn't been a reliable methodology and device to detect mud-caking.…”

Section: Fig 1 Clipper Mud Cakementioning

confidence: 99%

Cutterhead mud-caking detection method and application based on cutter wear and temperature measurement

Xia

Lian

et al. 2019

JAMDSM

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Mud-caking of the cutterhead in a tunnel boring machine (TBM) has been commonly encountered when a TBM is excavating through strongly weathered rock or clay. Not only the opening of cutterhead could be blocked to cause problem for muck flowing through, mud-caking of a cutterhead will also lead to the increase of thrust and torque, as well as compromise of tunneling efficiency. To predict the mud-caking status in real time, a prediction model was established based on cutter temperature characteristics, and a bus-based detection system was designed to monitor cutter wear and temperature in tunneling. Such prediction model and detection system were verified on an earth pressure balance (EPB) TBM at a Shenzhen metro project. The research demonstrated that the detection system performed its function of monitoring cutter wear and temperature changes in real time. A dynamic prediction of cutterhead mud-caking status was also proved using the prediction model.

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Section: Fig 1 Clipper Mud Cakementioning

confidence: 99%

Cutterhead mud-caking detection method and application based on cutter wear and temperature measurement

Xia

Lian

et al. 2019

JAMDSM

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“…Bilgin and Acun [34] studied the effect of ground transition zones on EPB-TBM performance in complex geology. Huanga et al [35] developed a real-time monitoring system for the interaction between the TBM and surrounding rocks, proving that the vibration of the TBM head is related to the rock properties. Recently Liu et al [36] conducted a very valuable field monitoring programme wherein a EPB-TBM was fitted with one triaxial accelerometer and three one-axial accelerometers.…”

Section: Introductionmentioning

confidence: 99%

An Early-Warning System to Validate the Soil Profile during TBM Tunnelling

et al. 2022

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Identification of soil condition at the working face of a tunnel boring machine (TBM) is a key factor for the efficiency and safety of TBM tunneling. The paper presents the first application of the Horizontal-to-Vertical Spectral Ratio (HVSR) method on microtremors induced by a TBM during tunnelling. The innovative application is based on the development of an easy-to-use and economical early-warning system, which aims to confirm, or otherwise, the soil profile established in the design phase of tunnels by comparing the soil natural frequencies obtained from the soil profile carried out during the design phase and the soil natural frequencies coming from the HVSR analysis of the microtremors induced by the TBM during tunnelling. Just one or two geophones are necessary to use the proposed procedure. It can be applied to an area up to about 20 m ahead of the TBM excavation front and constitutes a powerful early warning system. Due to the great heterogeneity of the subsoil, dual-mode TBMs are often used, frequently changing from Open-Face (OF) mode for rock formations to Earth Pressure Balance (EPB) mode for cohesive and incoherent soil. Any “additional” information on the soil, which will be dug in the next days or hours is extremely useful for subsoil with great heterogeneity. The new procedure offers a reasonable time interval in which to modify the excavation method. This, in turn, can avoid damage to the TBM and existing structures and infrastructures. It allows us also to have a valuable geotechnical database for future works on the infrastructural networks. The proposed procedure has been successfully applied during the construction of the new underground lines in Catania (Italy).

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“…In addition, more researchers paid attention to the cutting performance of the disc cutters. For instance, the wear and speed of the real-time monitoring device have been successfully tested in the laboratory tests and used in a Chinese TBM project 28 – 31 . The Mobydic system based on the serpentine manipulator and camera for monitoring TBM cutterhead has been used in Hong Kong 32 , 33 .…”

Section: Introductionmentioning

confidence: 99%

A case study on TBM cutterhead temperature monitoring and mud cake formation discrimination method

Xia

Lian

et al. 2021

Sci Rep

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The mud cake is easily formed during the tunnel boring machine (TBM) excavation in clay soils or rocks containing clay minerals. Mud cake will lead to soil disturbance of tunnel face, clogging cutterhead and even affect the construction efficiency and personnel safety. In this study, a discrimination method of mud cake formation based on cutterhead temperature was proposed. An online monitoring system was designed and installed on the slurry balance TBM. The results show that: (a) the cutterhead temperature data can be reliably detected and transmitted by the system; (b) in a tunneling cycle, the temperature at some positions of the cutterhead will increase first and then decrease; (c) during the field test, the temperature variation is around 2.5 °C under the normal condition, but the temperature variation will increase more than 50 °C due to the mud cake or geological change; (d) compared with the cooling rate, mud cake formation can be accurately discriminated.

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Development and in-situ application of a real-time monitoring system for the interaction between TBM and surrounding rock

Cited by 64 publications

References 32 publications

Cutterhead mud-caking detection method and application based on cutter wear and temperature measurement

Cutterhead mud-caking detection method and application based on cutter wear and temperature measurement

An Early-Warning System to Validate the Soil Profile during TBM Tunnelling

A case study on TBM cutterhead temperature monitoring and mud cake formation discrimination method

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