摘要
应用非连续变形分析(DDA)对九甸峡水电站厂房高岩体高边坡进行了稳定性分析研究,建立了DDA块体系统分析模型。通过分析边坡位移和强度参数间的关系得到边坡在支护加固前后的极限内摩擦角及相应的稳定安全系数,并分析了边坡发生塌滑的原因。结果表明,该边坡在加固前安全系数较小,存在不稳定的可能性,支护加固后边坡的稳定安全系数有显著提高,可满足正常运用要求。
Based on the discontinuous deformation analysis （DDA）, the stability of the high rock slope behind the power house of Jiudianxia hydroelectric station was studied. According to the information of the geology and the status of the rock joint plane, the DDA model was established. Based on the relationship between the displacement and the intensive parameter of the slope, the ultimate internal friction angle and buckling safety factor were obtained. Moreover, the reason why the slope slumped was analyzed. It is shown that the safety factor was small and the slope was instable before reinforcement, but after reinforcement the safety factor was significant improved, meanwhile, the slope can meet the challenge of normal operation after reinforcement.
出处
《水电能源科学》
2008年第2期82-84,71,共4页
Water Resources and Power
基金
国家自然科学重点基金资助项目(50539110)
关键词
岩体高边坡
DDA
极限摩擦角
安全系数
稳定
high rock slope
DDA
ultimate friction angle
safety factor
stability
