An Advanced Study on the Impact of Varying Degrees of Underground Accidental Explosions on Underground Pipes by Simulation

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An Advanced Study on the Impact of Varying Degrees of Underground Accidental Explosions on Underground Pipes by Simulation

June 16, 2021 Environment and Earth Science 0

The detonation of solid, liquid, or gas explosive materials stored beneath the ground surface causes underground accidental explosions. Underground explosions can occur in both sand and undrained clay, with varying degrees of impact on underground structures. The effects of varying degrees of underground accidental explosions on underground pipes were studied using the ABAQUS numerical code in this study. Pipes buried at various depths below the ground surface in loose sand, dense sand, and undrained clay were modeled. Several researchers’ discoveries about material properties were used. Materials for pipes and soil were restricted to linear, elastic, homogeneous, and isotropic properties. Displacement, pressure, mises, stress, and strain were measured at the crown, invert, and spring-line of vertically and horizontally buried underground pipes. The findings revealed that, regardless of the ground media, displacement increases linearly as the loading wave velocity increases, whereas clay soil (i.e. undrained clay) is problematic. Even though the results vary widely due to dilations and compressions caused by the transient stress pulse of the compression wave, the observed parameters increase as the loading wave velocity increases. This research has shown that higher loading wave velocity results in higher displacement, which in turn results in higher induced moment and stress when multiplied by the corresponding distances. As a result, accidental explosion resistant evaluation of underground installations such as pipes is required in order to have an optimal design of underground structures such as pipes that can withstand the effects of underground accidental explosions.

Author (s) Details

Dr. Akinola Johnson Olarewaju
Civil Engineering Department, School of Engineering, Federal Polytechnic, Ilaro, Ogun State, Nigeria.

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