本工程是北京市轨道交通机场线工程10标段的一部分,为12支线地下段盾构区间右线工程,全长4092m。穿越停机坪地段地层为富水软弱地层,针对影响地面沉降的主要因素,我们制定了相应的施工措施,如:重新设定土仓平衡土压;掘进时注意调节掘进速度和螺旋机出土速度等。通过监测结果证明,以上措施对地表沉降控制起到了很好的作用。 This project is a part of the 10th metro segment of the Beijing Metro Line Project and is a right-line project of a shield section of 12 underground sections with a total length of 4092m. Through the apron section of the formation of water-rich and weak strata, in view of the main factors that affect the land subsidence, we have formulated the corresponding construction measures, such as: reset soil pressure equilibrium; excavation, pay attention to adjust the driving speed and the screw machine unearthed speed . The monitoring results show that the above measures have played a very good role in the control of ground subsidence.