| 深溪沟水电站导流洞预应力围堰爆破拆除 |
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| 引用本文： | 赵根,吕鹏飞.深溪沟水电站导流洞预应力围堰爆破拆除[J].工程爆破,2008,14(4). |
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| 作者姓名： | 赵根 吕鹏飞 |
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| 作者单位： | 中国科学技术大学,合肥,230000;水利部岩土力学与工程重点实验室,武汉,430010;国电大渡河深溪沟水电有限公司,四川汉源,610041 |
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| 摘 要： | 深溪沟导流洞围堰为国内首座预应力结构围堰,采用数值仿真分析等手段,确定了安全可行的预应力释放顺序和工艺,并在预应力释放时对围堰变形进行了有效监控,确保了导流洞进口围堰拆除顺利实施。采用预裂-光爆"双保护层"爆破技术,削弱了主爆孔爆破产生的破坏影响,有效地保护了保留混凝土的质量。根据围堰与永久建筑物距离的远近,将爆区分成不同区域并采取不同的爆破参数,采用高精度毫秒廷时起爆技术,严格控制单段药量,既控制了爆破振动、爆破飞石,又确保了爆破效果,保证了邻近的成昆铁路正常运行。
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| 关 键 词： | 深溪沟水电站 预应力围堰 爆破拆除 |
BLASTING DEMOLITION OF PRESTRESSED COFFERDAM FOR RIVER DIVERSION TUNNEL IN SHENXIGOU HYDROPOWER STATION |
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| ZHAO Gen,L Peng-fei.BLASTING DEMOLITION OF PRESTRESSED COFFERDAM FOR RIVER DIVERSION TUNNEL IN SHENXIGOU HYDROPOWER STATION[J].Engineering Blasting,2008,14(4). |
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| Authors: | ZHAO Gen L Peng-fei |
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| Affiliation: | ZHAO Gen~(1,2) LU Peng-fei~3 (1.University of Science , Technology of China,Hefei 230000,China,2.Key Laboratory of Geotechnical Mechanics , Engineering of the Ministry of Water Resources,Wuhan 430010,3.Guodian Dadu River Shenxigou Hydropower Co.,Ltd,Hanyuan 610041,Sichuan,China) |
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| Abstract: | For a safety demolition of the cofferdam for the river diversion tunnel of the Shenxigou hydropower station,the first prestressed structure cofferdam constructed in China,the feasibility of security order and the release of the prestress were determined based on numerical simulation analysis and some other means.The effective monitoring of the deformation of the cofferdam was taken when the prestress was released,which ensured the demolition of the inlet of the river diversion tunnel to implement smoothly .... |
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| Keywords: | Shenxigou Hydropower Station Prestressed cofferdarn Blasting demolition |
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