Research on the Selection Model of Apron In-Ground Pit Based on Utility Tunnel Technology

This paper studies the selection of apron in-ground pits locations, using the Analytic Hierarchy Process to identify key factors influencing the selection of apron in-ground pits locations. It establishes a multi-objective optimization model for apron in-ground pits locations based on utility tunnel technology, considering the construction distance cost, the human resource cost, and the in-ground pits installation cost. The model is validated through simulation using particle swarm optimization algorithm. The results show that the proposed model can achieve the integration of apron in-ground pits. Compared with the existing pit system at Zhuhai Airport, the total cost has reduced by approximately 50.4%, 52.97%, and 34.01% for the three different aircraft parking stand layouts, respectively. This can provide guidance for the application of utility tunnel in airport construction, promote the improvement of apron operation efficiency and unmanned apron realization, and contribute positively to the development of green airports.