An automatic method for data processing of seismic data in tunneling

Bellino, Andrea; Garibaldi, Luigi; Godio, Alberto

doi:10.1016/j.jappgeo.2013.09.007

Cited by 34 publications

(11 citation statements)

References 12 publications

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“…The Amberg Measuring Technique Company developed the TSP system to detect HGZs in front of the tunnel faces (Dickmann and Sander 1996). The TSP employs a migration imaging technique ahead of a tunnel face (Zhao et al 2006;Zhang, Zheng, and Yang 2010;Bellino, Garibaldi, and Godio 2013). The TSP system is an effective tool to map the geological discontinuities ahead of the tunnel face.…”

Section: The Principle Of Seismic Geological Predictionmentioning

confidence: 99%

“…; Alimoradi et al . ; Moser and Howard ; Sénéchal G., Rousset, and Gaffet ). Each prediction technique is based on the presence of contrast in specific physical properties of the surrounding rock, e.g., the dielectric constant and the acoustic impedance (Grodner ; Schrott and Sass ; Yaramanci ).…”

Section: Introductionmentioning

confidence: 99%

“…The TSP employs a migration imaging technique ahead of a tunnel face (Zhao et al . ; Zhang, Zheng, and Yang ; Bellino, Garibaldi, and Godio ). The TSP system is an effective tool to map the geological discontinuities ahead of the tunnel face.…”

Section: Introductionmentioning

confidence: 99%

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Prediction of tunneling hazardous geological zones using the active seismic approach

Jiao

Tian

Liu

et al. 2015

Near Surface Geophysics

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This paper presents a seismic method and a newly developed device to predict the hazardous geological zones ahead of a tunnel face. The equipment used to predict hazardous geological zones consists of three components: the seismic source, the acquisition unit, and the data processing unit. The following features enable this device to be a valuable tool in predicting hazardous geological zones: the precise trigger time detection; the application of semi‐liquid couplant, which improves geophone coupling with the surrounding rock; the filtering of the prominent tunnel acoustic wave interference; and a software package of information on hazardous geological zones. Through extensive detection exercises of hazardous geological zones in the excavations of nearly 100 tunnel projects in China, it has been demonstrated that this device can satisfactorily predict hazardous geological zones, such as faults, water‐bearing zones, karst caverns, etc., within 150 m in front of the tunnel faces.

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Section: The Principle Of Seismic Geological Predictionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Prediction of tunneling hazardous geological zones using the active seismic approach

Jiao

Tian

Liu

et al. 2015

Near Surface Geophysics

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“…Geophysical methods can also offer several principal possibilities to achieve this goal. One of them is seismic imaging ahead of a tunnel face, which is based on vertical seismic profiling [13][14][15]. This method has been developed in the field of hydrocarbon exploration and uses seismic wave fields generated by surface sources and observed by geophone arrays in boreholes [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Application of Specific Energy in Evaluation of Geological Conditions Ahead of Tunnel Face

Liu

Sakaguchi²,

Ishizu

et al. 2020

Energies

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In underground construction, especially tunnel building, a detailed knowledge of the geological conditions ahead of the tunnel face is essential for both safety and efficiency of work. Many tunnel collapses have been reported to occur because of a lack of accurate evaluation of the geological conditions. While conventional horizontal boring conducted from a tunnel face provides good accuracy, it is infrequently conducted due to its high cost and time-consuming nature. In addition, the tunnel seismic reflection method has limited practicality owing to the complexity of data processing. This paper presents a new approach based on the specific energy of the mechanical drilling rig to evaluate the geological conditions ahead of the tunnel face. In order to assess the geological conditions, rock mass quality index, buried depth of the tunnel and tunnel deformation investigation were undertaken, and the obtained data were compared to the specific energy. Results from the comparison reveal the evaluation criterion that if the distribution of specific energy in some areas deviates from the distribution of buried depth, it is considered that abnormal geological conditions exist in this area. This work can greatly contribute to the accurate and effective evaluation of the geological conditions ahead of the tunnel face.

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“…Therefore, in tunnelling applications, there is a need for a seismic system that can automatically estimate the wave velocity prior to imaging. Bellino, Garibaldi and Godio () proposes such a fully automatic method, which can estimate the average wave velocity as well as the distance to an interface. Recently, an approach called full‐waveform inversion (FWI) (Tarantola ; Virieux and Operto ) has been used to automatically produce a subsurface velocity model for tunnel exploration (Musayev, Hackl and Baitsch ; Bharadwaj et al ).…”

Section: Introductionmentioning

confidence: 99%

A shear‐wave seismic system using full‐waveform inversion to look ahead of a tunnel‐boring machine

Bharadwaj

Drijkoningen

Mulder

et al. 2017

Near Surface Geophysics

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In the near surface with unconsolidated soils, shear-wave properties can often be characterised better and with a higher resolution than compressional-wave properties. To enable imaging ahead of a tunnel-boring machine, we developed a seismic prediction system with a few shear-wave vibrators and horizontal receivers. The boring process is interrupted at regular intervals to carry out active surveys. The vibrators are then pushed against the rock or soil in front of the cutting wheel of the machine. The design of the vibrators is based on linear synchronous motor technology that can generate very low frequencies, starting at 5 Hz. These vibrators generate a force in a direction perpendicular to the tunnel axis. Horizontal receivers measure the particle velocity, mainly due to the horizontally polarised shear waves. Because imaging with conventional migration methods suffers from artefacts, caused by the incomplete aperture and inaccuracies in the assumed velocity model, we use two-dimensional horizontally polarised shear full-waveform inversion to resolve the subsurface shear properties. The classic cycle-skipping problem, which can make the application of fullwaveform inversion cumbersome, is avoided by the capacity of the vibrators to generate low frequencies. In this paper, we demonstrate the capabilities of the proposed seismic system through a number of synthetic and field experiments.

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An automatic method for data processing of seismic data in tunneling

Cited by 34 publications

References 12 publications

Prediction of tunneling hazardous geological zones using the active seismic approach

Prediction of tunneling hazardous geological zones using the active seismic approach

Application of Specific Energy in Evaluation of Geological Conditions Ahead of Tunnel Face

A shear‐wave seismic system using full‐waveform inversion to look ahead of a tunnel‐boring machine

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