摘要
通渝隧道区分布的含水层属海相沉积而成的可溶岩。2004年2月22日,在隧道中间地段k21+780里程,埋深达940m的隧道左拱肩发生突发性特大涌突泥的地质灾害。运用3D-σ数值分析软件对隧道k21+780地段的围岩进行应力计算,得出了围岩的应力及破坏域分布特征,结合工程地质及隧道施工分析了深埋隧道涌突泥的形成原因。
The water stratum, distributing around the Tong-Yu Tunnel location, is eroded carbonate rock belong sea faces aggradations. A mud breakout was occurring at K21 + 780, with 940-meter depth of rock cover, in Feb 22th, 2004, in Tong-Yu Tunnel. According to the 3D-σ software analysis, the stress in the surrounding rock at K21 + 780 are proved, as well as the breakage region. Based on the conclusion of 3D-σ software analysis, combining with the engineering geology and construction technique, the forming reason of mud breakout in tunnel is discovered.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2005年第6期920-923,共4页
Rock and Soil Mechanics
基金
国家自然科学基金重点资助项目(No.50334060)
关键词
隧道
涌突泥
数值模拟
Computer simulation
Engineering geology
Highway engineering
Rock mechanics
Stress analysis
