Elliptical airblast overpressure model

Abstract

This paper describes an elliptical airblast overpressure model that has been developed to assess airblast levels resulting in the area surrounding a blast site using levels measured or predicted at one or more positions. The model produces decibel contour plans to a scale that can be superimposed on plans or scaled air photos of the blast site and surrounding area. The paper gives details of the development and use of the model, and multistation analyses that have been carried out to establish its validity. Details are given of other factors influencing airblast levels, and limitations on the use of the model.