The mitigation negative effect of tunnel-blasting-induced vibrations on constructed tunnel and buildings

Lin, Da-neng

doi:10.1007/s12404-011-0106-4

Cited by 3 publications

(2 citation statements)

References 6 publications

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“…Dang et al (2018) arranged three-dimensional velocity sensors in the bottom foot and arch waist of an adjacent tunnel, obtaining the blasting vibration velocity of the lining. Lin (2011) carried out long-term blasting vibration monitoring, investigating the relationship between the PPV and charge, and the stability of the tunnel, which was disturbed by blasting vibration, was then assessed by the dynamic stress ratio method. (3) Numerical analysis: the numerical analysis method is being gradually applied to investigate tunnel engineering with the rapid development of computing technology.…”

Section: Introductionmentioning

confidence: 99%

Propagation characteristics and control technology of blasting vibration in neighborhood tunnel

Qin,

Zhao,

Chen

et al. 2023

Front. Earth Sci.

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During the tunnel construction process using the drilling and blasting method, the induced blasting vibration always poses a great threat to the stability and safety of the adjacent tunnel supporting structure. To improve the efficiency and safety of tunnel blasting construction, the vibration propagation and peak particle velocity (PPV) distribution of the lining of an excavated tunnel were investigated during the blasting of an adjacent tunnel located in Guangxi province. The evolution process and distribution characteristics of the PPV of the lining of adjacent tunnels were monitored and analyzed. The results show that the maximum blasting vibration velocity of the lining of the adjacent tunnel can be shown as: PPVx > PPVz > PPVy; hence, the PPVx plays a significant role in the vibration of the adjacent tunnel. According to the tensile stress failure criterion, the PPV threshold was determined to be 12.7 cm/s in this study. To control the damage of surrounding rock induced by the blasting vibration, compound wedge-shaped cutting technology, stress wave dislocation superposition technology, and pre-splitting blasting technology were employed to reduce the impact of blasting vibration on the excavated tunnel.

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Section: Introductionmentioning

confidence: 99%

Propagation characteristics and control technology of blasting vibration in neighborhood tunnel

Qin,

Zhao,

Chen

et al. 2023

Front. Earth Sci.

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“…Also, the blasting is producing huge help on the engineering yet generating many adverse effects on existing structures. Also, many scholars have done a lot of researches on adverse effects [2][3][4]. Hence, predicting the vibration safety criterion has become an important and effective method for analyzing the adverse effects.…”

Section: Introductionmentioning

confidence: 99%

Blasting Vibration Safety Criterion Analysis with Equivalent Elastic Boundary: Based on Accurate Loading Model

Qiao

Dasgupta

et al. 2015

Shock and Vibration

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In the tunnel and underground space engineering, the blasting wave will attenuate from shock wave to stress wave to elastic seismic wave in the host rock. Also, the host rock will form crushed zone, fractured zone, and elastic seismic zone under the blasting loading and waves. In this paper, an accurate mathematical dynamic loading model was built. And the crushed zone as well as fractured zone was considered as the blasting vibration source thus deducting the partial energy for cutting host rock. So this complicated dynamic problem of segmented differential blasting was regarded as an equivalent elastic boundary problem by taking advantage of Saint-Venant’s Theorem. At last, a 3D model in finite element software FLAC3D accepted the constitutive parameters, uniformly distributed mutative loading, and the cylindrical attenuation law to predict the velocity curves and effective tensile curves for calculating safety criterion formulas of surrounding rock and tunnel liner after verifying well with the in situ monitoring data.

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Effect of Blasting During Tunnel Excavation on an Existing Adjacent Tunnel

Dang

2022

Teknik Dergi

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In recent decades, the effects of blast loads on existing structures have gained considerable attention due to the increase in threat from various activities. Site-specific empirical relationships for calculation of blast-induced vibration parameters like Peak Particle Velocity (PPV), Peak Particle Acceleration (PPA), and Peak Particle Displacement (PPD) are commonly used for the estimation of the impact of blasting vibration on an existing adjacent tunnel. However, these relationships are not able to consider the variation in rock parameters and uncertainty of in situ conditions such as modern rock mass classifications (i.e., RMR, Q-system, RQD). In this paper, a published blast data of various researchers in different rock sites at Croix-Rousse tunnel in France have been collected and used to propose a generalized regression model for PPV by considering the effects of rock parameters like Rock Mass Rating (RMR) system, damping ratio "", Dynamic Young's modulus "E d ". By using the numerical analysis method, the proposed regression model of PPV (Empirical Formula) function of a variable and multivariate can be directly used in the prediction of blast-induced vibrations in rocks.

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The mitigation negative effect of tunnel-blasting-induced vibrations on constructed tunnel and buildings

Cited by 3 publications

References 6 publications

Propagation characteristics and control technology of blasting vibration in neighborhood tunnel

Propagation characteristics and control technology of blasting vibration in neighborhood tunnel

Blasting Vibration Safety Criterion Analysis with Equivalent Elastic Boundary: Based on Accurate Loading Model

Effect of Blasting During Tunnel Excavation on an Existing Adjacent Tunnel

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