The disaster distribution of oil and gas pipelines caused by strong ground motion

In order to rapidly evaluate the disaster distribution of oil and gas pipelines caused by strong ground motion after earthquakes, the spatial distribution of peak acceleration and peak velocity along oil and gas pipelines was understood by using the ShakeMap technology. Based on earthquake motion and working pressure, the damage states of oil and gas pipelines in earthquake-stricken areas were judged and the possible consequences of pipeline damage were discriminated. Afterwards, the disaster distribution of pipelines was determined on the basis of population density and pipeline importance. In this way, the disaster of oil and gas pipelines in earthquake-stricken areas after earthquakes could be assessed rapidly. Finally, a case study was carried out on Pishan earthquake of magnitude 6.5 happened on July 3rd, 2015. The damage states and disaster distribution of oil and gas pipelines in the area were estimated rapidly based on seismic motion parameters calculated by ShakeMap_CNST system. The pipeline was basically in good condition or at the state of slight damage which mainly occurred in degree Ⅷ zones. Results show that this research method is of highly practical value, presenting disaster distribution characteristics of oil and gas pipelines in earthquake-stricken areas in an objective way.