摘要
天生桥二级(坝索)水电站厂房南边坡,由软硬相间的砂岩夹泥页岩组成,岩层反坡倾斜60°左右,构成逆向边坡.由于开挖边坡较陡,喷锚治理不及时,加之地质结构本身的弱点以及爆破震动等因素的影响,在4个月中发生三次倾倒破坏.本文从边坡工程地质特点出发分析了倾倒破坏的发展规律,及其形成机理,并阐述了治理措施.
The south slope of the powerhouse of Tianshengqiao two-stage(Basuo) hydropower station is composed of a hard-soft alternation of sandstone and mud shale. The rock strata dip towards the slope at an angle of about 60°,forming an inverse slope. The slope of excavation generally ranges from 1: 0.8 to 1: 0.5.Three events of toppling failure occurred within four months.In this paper, the features of engineering geology and the rules of toppling failure are discussed, then the failure mechanism is investigated and finally some engineering measures for slope control are proposed
出处
《岩石力学与工程学报》
EI
CAS
CSCD
1991年第1期23-32,共10页
Chinese Journal of Rock Mechanics and Engineering
