Blasting Vibration Dynamics in Geotechnical Systems

Blasting vibration dynamics concerns the generation, propagation and interaction of seismic waves induced by explosive charges within rock masses and soils. When a charge is detonated, high-pressure gases expand rapidly, creating stress waves that travel through the surrounding material. The characteristics of these waves—amplitude, frequency content and energy distribution—depend on charge size, delay timing, rock mass properties and confinement conditions. In geotechnical engineering this knowledge underpins the design of safe excavation schemes, the mitigation of damage to adjacent structures and the optimisation of fragment size for efficient removal. Wave propagation is influenced by heterogeneities such as joints, faults or layering, which can reflect, refract or amplify vibrations. Advances in sensor technology, numerical simulation and signal processing have enhanced our capacity to monitor peak particle velocities, frequency spectra and energy dissipation. Practical applications span tunnel boring through urban areas, open-pit mining, quarrying and reservoir caverns, all of which require precise control of vibration levels to safeguard existing infrastructure, protect worker safety and minimise environmental disturbance. Contemporary research seeks to integrate real-time monitoring with predictive models, enabling adaptive blasting designs that respond to observed ground behaviour and ensure compliance with regulatory limits.

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Blasting Vibration Dynamics in Geotechnical Systems publication trend

The graph below shows the total number of articles in blasting vibration dynamics in geotechnical systems across all publications each year (not limited to Nature Index journals).

Technical terms

Peak particle velocity (PPV): The maximum speed at which a point on the ground moves due to passing seismic waves; a key metric for assessing structural damage thresholds.

Hilbert–Huang transform (HHT): A method for analysing non-stationary and nonlinear signals by decomposing them into intrinsic mode functions followed by Hilbert spectral analysis, revealing time-varying frequency and energy characteristics.

Digital electronic detonator: A precision timing device for blasting that offers millisecond-level delay control, enabling tailored wave interference and improved fragmentation.

Wave superposition: The interaction of two or more seismic waves intersecting in space and time, which can result in constructive (amplifying) or destructive (dampening) interference.

References

1. A deep dive into tunnel blasting studies between 2000 and 2023—A systematic review. Tunnelling and Underground Space Technology (2024).
2. Tunnel millisecond-delay controlled blasting based on the delay time calculation method and digital electronic detonators to reduce structure vibration effects. PLOS ONE (2019).
3. Vibration Signal Analysis of Water Seal Blasting Based on Wavelet Threshold Denoising and HHT Transformation. Advances in Civil Engineering (2020).