摘要
针对江坪河水电站厂房后边坡陡岩临空面倾角接近垂直、节理裂隙发育,可能发生崩塌落石灾害以至于威胁河谷部位地表厂房安全问题,在进行地质勘察的基础上,选取典型剖面建立落石运动分析模型,采用经验计算法定量分析落石运动特征,并以基于概率的运动学原理对落石进行数值仿真,探讨落石的落点分布、弹跳高度、运动速度及动能分布问题.计算结果表明,陡岩发生崩塌落石对电站厂房安全威胁巨大,需采取必要的落石防护措施.
The high and steep rock slopes behind the workshops of the Jiangping River Hydropower Station have developed joints and fissures,and a nearly vertical free surface angle,and are thus likely to pose rockfall hazards,threatening the safety of workshops in the river valley area.To solve this problem,typical sections of slopes were selected and a rockfall movement analysis model was established based on geological exploration.The experiential formulas were used for quantitative analysis of the characteristics of rockfall movement,and the kinematics formulas based on probability were used for numerical simulation.The rockfall placement distribution,bounce height,movement velocity,and kinetic energy distribution were analyzed.The calculated results show that the rockfall from high and steep rock slopes significantly threaten the safety of workshops of the hydropower station and protective measures should be taken.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
北大核心
2012年第2期162-167,共6页
Journal of Hohai University(Natural Sciences)
基金
"十一五"国家科技支撑计划(2008BAB29B01)
国家自然科学基金(50911130366)
河海大学新教师基金(20090094120017)
关键词
陡岩边坡崩塌
落石运动分析
落石防护措施
江坪河水电站高陡边坡
rockfall of steep rock slope
rockfall movement analysis
rockfall protective measures
high and steep slope of Jiangping River Hydropower Station
