摘要
在国内外有关岩石边坡爆破振动速度安全阈值研究成果的基础上,通过小湾水电站岩石高边坡爆破振动荷载下动力响应计算,由各阶边坡马道上的峰值动拉应力与质点峰值振动速度间的统计关系,按照极限拉应力准则,确定小湾水电站岩石高边坡爆破振动控制的合理部位及安全阈值。研究结果表明,岩石高边坡爆破振动控制的合理部位为开挖区上一台阶马道的内侧,其振动速度控制标准为10cm/s。
Based on the domestic and foreign research achievements about the safety threshold of blasting vibration velocity,the dynamic responds of high rock slope of Xiaowan Hydropower Station under blasting vibration,are carried out;then due to the statistical relation between the peak value of tensile stress and peak particle velocity at the slope step,and according to the rule of limit tensile stress,the reasonable monitoring position and the safety threshold of rock slope during its excavation were made certain.The results of the detailed research indicate that the reasonable monitoring position for blasting vibration control is at the inside of the slope step;and the peak particle velocity safety threshold is 10 cm/s for rock slope excavation.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2007年第1期51-56,共6页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金重点项目(50239070
50539100)
关键词
边坡工程
爆破振动
安全阈值
质点峰值振动速度
slope engineering
blasting vibration
safety threshold
peak particle velocity
