Study on explosion characteristics and consequences of buried gas pipelines

This study examines a gas pipeline explosion in Songyuan City, Jilin, using FLACS (Flame Acceleration Simulator) simulations to analyze leakage and blast dynamics. Results were validated against official reports. Key findings show: (1) along the X‐axis, temperature rises and falls faster with distance from ignition; (2) on the Z‐axis, higher elevations show slower temperature growth; (3) denser obstacles delay temperature decline; (4) wind conditions accelerate peak temperature arrival upwind, where temperatures exceed downwind areas; (5) higher ambient temperatures slow initial temperature rise and result in lower final temperatures at greater distances; (6) vertical analysis shows reduced explosion temperatures at higher elevations. The simulation matches investigation reports, confirming FLACS' reliability for safety assessments in urban gas pipeline management. Results highlight how environmental factors significantly impact explosion characteristics, providing critical insights for risk mitigation in populated areas.