摘要
位于湖南省永吉高速第4合同段的那丘隧道左线主洞掌子面施工至K14＋513处,发现K14＋350~520段大型溶洞,为廊道厅堂式大型岩溶。通过对水文地质分析,提出了改桥、回填和改线3种方案对溶洞进行处理,以排除隐患。用施工难度和工程造价2个主要因素对3种方案进行了比选,最终选择了最优的回填方案对溶洞进行处理。
Naqiu tunnel is a long tunnel, which located in the fourth contract section, Yongji express highway, Hunan province. A large cave has been found in the K14＋350 to 520, which is a gallery hall type karst. By the analysis of hydrological geology, 3 kinds of schemes for the processing of the cave, bridge, backfill and changing the line, are put forward. After considering the two main reasons of the difficulty of construction and cost and comparing the advantages and disadvantages of each scheme, the optimal scheme is put forward.
出处
《湖南文理学院学报（自然科学版）》
CAS
2015年第3期42-46,共5页
Journal of Hunan University of Arts and Science(Science and Technology)
基金
湖南省交通厅课题(201225)
关键词
那丘隧道
厅堂式岩溶
处理方案
比选
Naqiu tunnel
hall type karst
treatment scheme
scheme comparison
