针对北京富水砂卵石地层大断面隧道地层稳定性差、工程周边环境复杂、对沉降控制要求高等诸多难题，在大断面隧道中采用CRD法、洞桩法进行施工，有效控制了工程结构、沿线及周围建筑物和地下管线的变形，确保了工程及周围环境的安全。

The CRD(cross diaphragm) and hole pile method were adopted in the large section tunnel,aiming at poor geological stability, complex engineering environment and the higher control requirements of subsidence in water-rich sandy gravel stratum of Beijing,which controlled the deformation of engineering structure,surrounding buildings along and underground pipeline effectively and ensured the safety of surrounding environment.