南水北调与水利科技Issue(5)：27-31,53,6.DOI:10.13476/j.cnki.nsbdqk.2014.05.007
复杂地层沉井爆炸助沉法施工安全的理论分析及数值模拟
Theoretical analysis and numerical simulation of the construction safety of open caisson aid2sinking by explosion method in complex strata
摘要
Abstract
The construction of large surge shaft in Xi'ergou hydropower station adopted the open caisson method. Due to that the open caisson has a large structure and is located in the complex strat a of pebbles gravel, the aid-sinking by explosion method w as used to solve the problem of the blocked subsidence during the sinking construction according to that vibration can cause the shaft lining sinking resulting from the alt ernating rise and fall of overpressure of shock w ave. T he theoretical analysis and nu-merical simulation w ere performed on the Xi'ergou project to det ermine the maximum allowed amounts of explosive, which were 171.13 kg and 74. 87 kg for the two methods respect ively. In practical engineering, aid-sinking w ith small amount of explosive can complete the construction tasks under the guarantee of construction safety.关键词
喜儿沟水电站/施工安全/爆炸冲击波/数值模拟/LS-DYNA/爆炸助沉法Key words
Xi'ergou hydropow er station/construction safety/explosive blast/numerical simulation/LS-DYNA/aid-sinking by ex-plosion method分类
建筑与水利引用本文复制引用
田雨,李洪涛,刘燚,姚强,姜凌宇..复杂地层沉井爆炸助沉法施工安全的理论分析及数值模拟[J].南水北调与水利科技,2014,(5):27-31,53,6.基金项目
国家自然科学基金资助项目(51009104) （51009104）
大学生创新创业训练计划国家级重点项目(201410610069) （201410610069）
大学生创新创业训练计划省级重点项目(201310610174) （201310610174）
