Citation

Ji H, Wang D, Huang W, Yang K, Liu W, Xu M. China Saf. Sci. J. 2019; 29(8): 112-117.

Copyright

(Copyright © 2019, China Occupational Safety and Health Association, Publisher Gai Xue bao)

DOI

10.16265/j.cnki.issn1003-3033.2019.08.018

PMID

unavailable

Abstract

In order to evaluate the safety of underwater pipelines and ensure the reliability and integrity of the pipe system, physical model experiment method is adopted to study the characteristics of surge impact pressure on the pipeline walls under the action of landslide surge. Firstly, the development process of landslide surge was discussed. Then, the impact pressure of surge at different measuring points on the wall of underwater pipelines and the influence of different volume sliders on the impact pressure were analyzed. Finally, the relationship between the surge impact pressure of underwater pipelines and the volumes of sliders was obtained. The results indicate that with the increase of slider volume, the maximum surge impact pressure at the wall increases approximately linearly. The maximum surge impact pressure of the far-end measuring point is greater than that of the near-end measuring point under the same working conditions due to superposition and reflection of the surge. It is also found that the larger the slider volume is, the larger the maximum pressure and average pressure at the measuring point would be and the greater the pressure fluctuation becomes when water depth and landslide water inlet angle remain the same. © 2019 China Safety Science Journal

Language: zh