论文部分内容阅读
专利申请号:CN200610097016.4公开号:CN1952350申请人:中铁四局集团有限公司;中铁四局集团第五工程有限公司小断面突变至大断面隧道快速施工方法,其特征是首先通过小断面开挖面一侧的小导坑过渡到大断面相应一侧的侧壁导坑;然后利用大断面侧壁导坑形成的纵向空间在大断面上开挖
Patent application number: CN200610097016.4 Publication Number: CN1952350 Applicant: China Railway Fourth Bureau Group Co., Ltd.; China Railway Fourth Engineering Group Co., Ltd. Fifth Section sudden change to a large section tunnel rapid construction method, which is characterized by first through a small section excavation Small side of the surface transition to the side of the large cross-section of the side of the side of the pit guide; and then use the large section of the side wall of the longitudinal direction of the formation of the longitudinal excavation of the large cross-section