摘要
用地质力学模型试验方法,在实验室对顺层岩质边坡进行分期开挖破坏试验;同时,利用三维快速拉格朗日差分分析(FLAC3D)程序模拟开挖破坏过程。2 种方法所得结果具有较好的可比性,揭示了顺层岩质边坡在开挖状态下岩体变形破坏的一些规律。提出在实际工程中,为避免开挖过程中边坡出现顺层滑动,宜边开挖边支护,且首先在坡脚处设置锚杆。
There are alternative stratified joint groups in a stratified rock slope. According to the relation of angles of joints and the slope, stratified rock slopes can be divided into three types: horizontal slopes, reversely inclined slopes and rock bedded slopes. Among these three types of slopes, the rock bedded slopes are most likely to slide. A kind of geo-model material is used to model the bedding slope in this paper. The failure behaviors of cutting slopes in layered rock mass are analyzed by multi-stage excavation of the slope. At the same time, FLAC3D program is used in the model of damage process. The results from the two methods are well coincident. The results show that, in order to avoid the failure of the slope, excavating and supporting should be carried out simultaneously, and anchor bolts should be used firstly in the foot of the slope.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2005年第9期1474-1478,共5页
Chinese Journal of Rock Mechanics and Engineering
基金
铁道部科研资金资助项目(2002G003-01-02)
关键词
岩石力学
顺层岩质边坡
稳定性
模型试验
Failure (mechanical)
Geologic models
Rock bolting
Rock mechanics
