By means of the weakly guiding approximation, the mode spot sizes Wx and Wy of the fundamental mode along the semimajor ......

城市地铁隧道开挖的方法多种多样,而盾构法由于其施工安全越来越受到世界各个城市的广泛运用,而在地铁线路形式中双线隧道形式尤为......