To ensure the safety of buried concrete pipeline during the process of blasting construction

field monitoring and numerical simulation were adopted to study the dynamic response of the adjacent buried concrete pipeline induced by the blasting excavation of an ultra-shallow buried underpass. The relationship model between the peak partical velocities (PPVs) and tensile stresses of the pipeline is established. Based on the ultimate tensile strength criterion

the blasting vibration safety criterion of the pipeline is calculated by the relationship model. The relationship between the maximum PPVs at different pipe sections along the pipeline and the PPVs at the ground points right above the pipe sections is also established. Combined the blasting vibration safety criterion of the pipeline

the blasting vibration safety criterion of ground is determined to ensure the safety of the pipeline. Results show that when the pipeline is empty

behind the working face

the PPVs at the middle and bottom of pipe section are approximately equal

and the smallest is at the top of pipe section. At the front of the working face

the greatest PPV is at the bottom of pipe section

followed by the middle and the top of pipe section. Along the axis of pipeline

the PPV reaches its maximum at the bottom of pipe section 3 m ahead of the working face. In the case that the pipeline is empty and full of water

the vibration characteristics are basically similar. The water in the pipeline lowers PPVs and the largest percentage of decrease is 7.3%. The blasting vibration safety criterion of pipeline is 10.84 cm/s and the blasting vibration safety criterion of ground is set to be 4.53 cm/s to ensure the safety of the pipeline. The determined safety criteria of blasting vibration can provide guidance for the field blasting construction.