碰撞风险模型在机场OAS面优化中的应用

Application of Collision Risk Model in Airport OAS Surface Optimization

针对高原机场特殊地貌,应用现行障碍物评价面(Obstacle Assessment Surface,OAS)过于保守,导致机场建设成本较高或选址困难等问题;应用碰撞风险模型(Collision Risk Model,CRM),构建10-7等概率模型,并基于此通过调整OAS-W面宽度,增加OAS-X面侧向斜率,在满足目标安全水平机场上,优化原OAS面对侧向净空区的限制。并针对某高原机场,设计改进后的OAS面绘制方法。结果表明,原有OAS面侧向额外安全裕度过大,且分布不均,应用改进后的OAS面可解决这一问题。

In view of the special landforms of high altitude airports,the application of existing obstacle assessment surfaces(OAS)is too conservative,causing problems such as high airport construction costs or difficulty in site selection;and applying the collision risk model(CRM)to construct 10^-7 The equal probability model,and based on this,by adjusting the width of the OAS-W plane,increasing the slope of the OAS-X plane,and optimizing the constraints of the original OAS facing the lateral clearance area at airports where the target safety level is met.And for a high altitude airport,the improved method for drawing the OAS surface was designed.The results show that the original OAS surface lateral extra safety margin is too large and the distribution is uneven.The application of the improved OAS surface can solve this problem.