海龙屯龙虎大道倾倒式危岩稳定性分析  

Analysis on Stability of Toppling Unstable Rock in Longhu Av. of Hailongtun

作　　者：任永佳 杨志双[1] 付晓彤[1] 刘贺 

机构地区：[1]吉林大学建设工程学院,长春130026 [2]中铁西北科学研究院有限公司,兰州730000

出　　处：《路基工程》2017年第5期33-37,共5页Subgrade Engineering

基　　金：遵义海龙屯申报世界文化遗产保护关键技术与研究项目(黔科合SY字[2014]3072)

摘　　要：采用静力分析法对海龙屯龙虎大道倾倒式危岩体进行计算分析,得到危岩体在不同工况下的稳定系数,依据规范判断其处于欠稳定或不稳定状态。运用geo-studio数值模拟软件对倾倒式危岩体稳定性进行分析,基于应力场的分析表明,危岩体在主控结构面周围处于受拉状态,并且从主控结构面底部至上部拉应力效应逐渐增强;基于位移场的分析表明,危岩体沿主控结构面且靠近临空面的一侧发生了较为显著位移,在主控结构面的顶部位移最大。总体上其倾倒式危岩处于欠稳定或不稳定状态,需采取防治措施,确保安全。Calculate and analyze the toppling unstable rock Longhu Av. of Hailongtun by using static analysis method and get the stability coefficient of the dangerous rock under different working conditions which judges that it is being in understable or unstable status according to the Specification. The stability of toppling unstable rock is analyzed by geo-studio numerical simulation software. The analysis based on the stress field shows that the unstable rock is in tension status around the master control structural surface and the tensile stress effect is gradually increased from the bottom to the upper part. The analysis based on the displacement field shows that the unstable rock has significant displacement at the side close to the free face along the master control structural surface and has the greatest displacement on the top of the surface. As a whole, the toppling unstable rock is in understable or unstable status, which is required for the prevention and control measures to ensure safety.

关 键 词：倾倒式危岩体 稳定性 静力分析 位移场 应力场 

分 类 号：TU457[建筑科学—岩土工程]