About the author:

1. Shenzhen Railway Investment and Construction Group Co., Ltd., Shenzhen,Guangdong 300308, China; 2. Dongguan Institute of Building Research Co., Ltd.,Dongguan, Guangdong 523820, China; 3. China Power Construction Seventh Bureau SouthernConstruction Co., Ltd., Shenzhen, Guangdong 518000, China

Abstract:

To analyze the dynamic response of rotary drilling construction to adjacent high⁃pressure gaspipelines, based on the foundation excavation project of Xili Station, on⁃site monitoring and numericalsimulation were adopted. The results show that the peak velocity of soil vibration in all directions near thehigh⁃pressure gas pipeline is negatively correlated with the distance between the vibration sources. Thehorizontal vibration velocity is greater than the vertical vibration velocity, and the vibration frequency isconcentrated in the range of 0 ~ 25Hz. The attenuation relationship equation is used to fit the peakvelocities of horizontal and vertical vibrations, and the fitting results have high credibility. The peakvibration velocity and peak Von Mises stress are highest on the side of the pipeline near the vibrationsource, and lowest on the side away from the vibration source. The gas pipeline vibration velocity isgreater than the surface vibration velocity and has a linear relationship. Establishing a pipeline vibrationvelocity prediction model can be applied in engineering to determine whether the pipeline is in a safestate.