一种给水管网震后水力状态的评价方法

A method of hydraulic state estimation for post-earthquake water supply systems

对于给水管网在震后的工作情况和服务水平,合理的水力状态的评价是很有必要的.在分析了地震对管线产生破坏程度的基础上,采用描述管线破坏程度的量化参数——泄漏面积标定了震后管线破坏状态的大小,将管线受地震的破坏程度定量化.在此基础上,将泄漏面积的分析模型与给水管网水力分析模型相结合,进行带泄漏模型的管网水力计算,建立了震后管网水力分析模型.给出了考虑泄漏模型的震后给水管网水力状况分析的步骤,以一个典型的给水管网为例,模拟了震后给水管网水力状况,得到了震后管网中各节点的压力状态.分析结果表明,带有泄漏模型的震后水力分析模型较好地反映了地震对管线的不同破坏程度的影响,合理的泄漏模型是正确评价震后给水管网供水能力的基础.

Hydraulic state estimation helps utilities to assess the performance of post-earthquake water distribution systems and make better decisions restore the water distribution systems. Based on the analysis of seismic intensity, the quantitative leakage area model is introduced to describe the failure intensity of pipes. And then, this paper combines the leakage area model and the hydraulic analysis model to establish the post-earthquake hydraulic analysis model of the water distribution systems. Fictitious nodes are supposed to produce leakage. The leakage magnitude and the node pressure are modeled by the leakage area. Finally, the proposed model is demonstrated in an example water distribution system The supply pressures at nodes with the failure of pipes are obtained resulting from the earthquake. This study builds a foundation for performance assessment and restoration of post-earthquake water distribution systems.