摘要
布陇箐隧道为云南元磨高速公路二号重难点工程,上行线接长明洞位于严重浅埋偏压的古滑体上,明洞围岩半硬半软,改用暗挖施工,难度极大。针对明洞段特殊的地质地形多变的特点,采用CRD工法,分部开挖施工,效果很好。该法对大跨度软弱围岩特别适用。
The Bulongqing Tunnel is an important and difficult project in the Yuan-Mo Expressway in Yunnan Province. However, the geological conditions there are very bad. With the CRD method applied to the construction, and each section regarded as a close-loop, the long-span, soft surrounding rock engineering conditions are overcome, and the construction is completed successfully.
出处
《国防交通工程与技术》
2004年第3期61-63,66,共4页
Traffic Engineering and Technology for National Defence
