近年来,随着我国经济的持续增长,城市人口数量急剧增加,当城市发展到一定规模,交通拥堵问题无疑成为一个制约城市进一步发展的瓶颈。发展方便、快捷的城市轨道交通成为城市发展的必然趋势和人们出行的迫切需要。现代城市发展的特征是纵向和横向的双 In recent years, as China’s economy continues to grow, the urban population has dramatically increased. When the city reaches a certain scale, the problem of traffic congestion will undoubtedly become a bottleneck restricting the further development of the city. The development of convenient and fast urban rail transit has become an inevitable trend of urban development and an urgent need for people to travel. The characteristics of modern urban development are vertical and horizontal double