辽宁工程技术大学学报（自然科学版）2017，Vol.36Issue(4)：396-401,6.DOI:10.11956/j.issn.1008-0562.2017.04.012
埋地输气管道安全并行距离分析
Parallel safe distance analysis of buried gas pipeline
摘要
Abstract
To research the failure under impact of leakage explosion of the buried gas pipeline on the parallel pipeline,this paper analyzed and verified destructive effect of shock wave of buried gas pipeline explosion to parallel pipeline under different parallel distance by using the method of the combination TNT equivalent model and numerical simulation.The results show that the natural gas explosion effect on the buried parallel pipeline can be divided into three levels with the parallel distance increase:large deformation,continuous slight deformation,no damage effect.Pipeline deformation caused by explosion over-pressure damage,soil compressive deformation and fracture failures when parallel distance is less than 3m.Pipeline deformation mainly caused by soil compressive deformation and fracture failures in pipeline when parallel distance is between 4m with 6m.Deformation stress is mainly derived from the soil viscoelasticity deformation stress and no fracture failures appear when parallel distance is more than 6m.But pipeline still produces large deformation when parallel distance is less than 8m.The minimum safety distance of buried parallel pipeline is more than 8m.关键词
埋地输气管道/泄漏爆炸/安全并行距离/TNT当量/大变形/失效/AUTODYNKey words
buried gas pipeline/leakage explosion/parallel safe distance/TNT equivalent/large deformation/failure/AUTODYN分类
数理科学引用本文复制引用
刘向峰,安宇,董绍华,王来贵..埋地输气管道安全并行距离分析[J].辽宁工程技术大学学报（自然科学版）,2017,36(4):396-401,6.基金项目
国家自然科学基金(51474121) （51474121）
