那丘隧道廊道厅堂式溶洞处治方案比选

摘要

Karst geology brings large safety hidden trouble to construction and operation safety of tunnels and must be properly treated,while treatment of large caves is particularly complicated and shall be considered comprehensively.With the treatment for hall type caves in corridor of Naqiu Tunnel on Yongshun-Jishou Expressway,this paper introduces the methods to select treatment schemes for large caves to provide a reference for similar projects.%岩溶地质给隧道施工和运营安全带来较大安全隐患,必须妥善处治,而大型溶洞的处治尤其复杂,需要全方位考虑.以湖南省永吉高速公路那丘隧道廊道厅堂式溶洞处治为例,介绍大型溶洞处治方案的选择方法,为类似工程提供参考.