摘要
利用显示动力有限元(LS-DYNA)方法,计算丰满水电站新坝基坑开挖爆破振动荷载作用下老坝及其他重要建筑物的动力响应,根据丰满岩塞爆破资料并参考其他类似施工爆破工程经验确定振动反应控制标准,进行爆破安全评价并确定合理的爆破单响药量。计算结果表明,所拟定的新坝基础开挖爆破最大单响药量满足工程爆破安全要求;爆破震动的影响程度很小,老坝的抗滑稳定性是有保证的。
By using display dynamic finite element （LS-DYNA） method, the dynamic responses for constructing old dam and other main structures under blasting vibration load of the foundation pit excavation for constructing new dam is calculated for Fengman Hydropower Station. The vibration response control standards are determined according to rock plug blasting data in Fengman area and the experiences of other similar blasting engineering. The safety of old dam and other structures are assessed and a reasonable amount of blasting single fire dynamite is also determined. The calculation results show that the proposed largest single fire dynamite can meet the safety requirements of blasting, and the blasting vibration just has a small impact on the old dam and the sliding stabihty is guaranteed.
出处
《水力发电》
北大核心
2011年第12期31-33,共3页
Water Power
关键词
基坑
爆破振动
控制标准
动力计算
新坝
老坝
丰满水电站
foundation pit
blasting vibration
control standard
dynamic calculation
new dam
old dam
Fengman Hydropower Station
