| 全方位预裂爆破在三峡左岸大坝和电站厂房二期开挖中的应用 |
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| 引用本文： | 刘学.全方位预裂爆破在三峡左岸大坝和电站厂房二期开挖中的应用[J].爆破,2000(Z1). |
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| 作者姓名： | 刘学 |
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| 作者单位： | 中国水利水电第七工程局!四川成都郫县611730 |
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| 摘 要： | 介绍了全方位预裂爆破在三峡左岸大坝和电站厂房二期 (下称第二阶段 )开挖施工中的成功实践 ,证明预裂爆破对保留岩体的影响主要表现为爆炸应力破坏和振动破坏。降低预裂爆破对岩体损伤程度的有效途径是优化爆破参数 ;控制单响药量和岩石质点振动速度。
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| 关 键 词： | 三峡工程 大坝 振动 破坏控制 预裂爆破 |
Application of Omnibearing Presplit Blasting in Excavation of Left Dam and a Workshop of Three Gordges |
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| LIU Xue.Application of Omnibearing Presplit Blasting in Excavation of Left Dam and a Workshop of Three Gordges[J].Blasting,2000(Z1). |
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| Authors: | LIU Xue |
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| Abstract: | The sucessful practice in excavating the left dam of Chinese Three Gorges by an omnibearing presplit blasting method is introduced. Results show that the explosion stress and vibration destruction is the predominate form when the presplit blasting affects the destruction of rocks. The effective ways of lowering the destruction degree by presplit blasting is to adopt smaller holes. optimize blasting paramaeters and lower the vibration velocity of rocks |
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| Keywords: | omnibearing blasting presplit blasting vibration destruction control |
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