Abstract
As the buried gas pipelines are not easily field monitored, its status under the influence of tunnel blasting vibration is often difficult to obtain. In order to assess the safety of an upper buried gas pipeline under blasting vibration in the Beijing subway line 16, we established the 3D numerical model of the real field engineering to calculate and analyze the distribution of peak particle velocity (PPV) on the surface soil, proved its reliability by using the field monitoring data and discussed the dynamic response of the pipeline. Based on the analysis, we further assessed the safety of pipeline subjected to tunnel blasting vibration and concluded that the pipeline is only subjected to limited effect of tunnel blasting vibration and thus is safe.
Highlights
At present, more than 40 cities in China are constructing subways
Because the pipeline is buried in the soil, the gas pipeline company does not allow excavation to reveal the pipeline for monitoring
The comparison of the numerical simulation data and the field test data shows that the numerical calculation model and the parameter selection are reasonable
Summary
More than 40 cities in China are constructing subways. Due to the complexity of the urban environment, subway tunnel passing through the existing gas pipelines often occurs. Because many subways tunnels are constructed using blasting, an efficient excavation method for hard rock, once the existing gas pipelines rupture and leak under the influence of blasting vibration, there will be severe consequences. In the process of subway tunnel construction, it is important to assess and ensure the safety of gas pipelines during blasting excavation of tunnels passing through the pipelines. To assess the safety of an upper buried gas pipeline under blasting vibration of the subway line, we established a complex 3D numerical model of the real field engineering by using the software LS-DYNA, described the blast load in JOURNAL OF VIBROENGINEERING. SAFETY ASSESSMENT OF UPPER BURIED GAS PIPELINE UNDER BLASTING VIBRATION OF SUBWAY TUNNEL: A CASE STUDY IN BEIJING SUBWAY LINE.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
