摘要
松树岭水电站厂房基础开挖后,后缘边坡形成高133 m的陡壁和陡坡,上部陡壁为坚硬的灰岩,下部陡坡为软弱的粉砂质页岩,软弱岩体发生蠕变现象,加上顺坡向发育一组卸荷裂隙,需要进行边坡的综合治理。采取的综合治理措施为:对软弱岩层进行削坡减载、固结灌浆、设排水沟、护坡,建立观测网,对上部坚硬岩体采用预应力锚索加固。经过综合治理,厂房后缘边坡达到安全稳定。
After excavating the plant fundation, 133 m high steep slope is formed in the back edge of the slope with hard limestone at upper part and soft silty shale at lower. It is necessary for doing comprehensive treatment to the slope, because there have creep of soft rock and a group of unloading cracks at the slope. The comprehensive treatment measures are adopted as follow： slope cutting and load shedding, consolidation grouting, drainage setting, slope protecting and observation networks establishing to the soft rock, as well as the pre-stressed anchorage to the hard rock. Through comprehensive treatment, the slope gets to the condition of safety and stability.
出处
《资源环境与工程》
2010年第2期171-173,共3页
Resources Environment & Engineering
关键词
边坡开挖
蠕变
卸荷裂隙
综合治理
安全稳定
excavating slope
creep
unloading crack
comprehensive treatment
safety and stability
