唐山市燃气管网地震紧急处置系统初步设计研究

Preliminary design studies on a seismic emergency handling system of Tangshan gas network

选取典型地震波,采用波动法计算了唐山市燃气管道在不同地震强度下的应力值,基于三态破坏准则对单体管道地震破坏概率进行了分析,给出了不同地震强度下燃气管道的破坏概率、震害率,以及唐山市燃气主干管网的破坏处数。结合唐山市中压燃气管网的布局,给出了紧急处置系统区块划分方案及阈值,初步完成了唐山市燃气管网地震紧急处置系统的规划设计。

Some typical seismic waves are selected, the wave calculation method is applied to calculate the stress values of Tangshan gas pipeline network under different seismic intensities. The failure probability of a single pipeline is analyzed based on the tristate failure criterion, the gas pipeline failure probability and damage rates under different earthquake intensities are calculated, as well as the number of the break points of Tangshan main gas pipeline network. Combined with the layout of Tangshan medium pressure gas pipeline network, the block partition plan and the threshold value of the emergency handling system are determined, the design and planning on the seismic emergency handling system of Tangshan gas pipeline network is initially completed.