| 微倾坍塌爆破拆除框架结构厂房 |
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| 作者单位： | ;1.青岛海防工程局;2.青岛海防工程局;3.青岛海防工程局;4.青岛海防工程局 青岛266023 |
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| 摘 要： | 高约 2 3m的待拆厂房 ,其一侧位于须保护厂房的两根立柱之间 ,相距仅 5 0cm。另一侧 8 5m之外也是须保护的厂房。在此复杂条件下 ,采用了先使厂房微倾斜尔后定向倒塌的方案。通过合理确定整体微倾角度、柱底破坏高度、微差时间和孔网参数 ,成功地爆破拆除了框架结构厂房 ,被保护的建筑物未受任何影响
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| 关 键 词： | 拆除爆破 坍塌 框架结构 厂房 |
MOORSTONE QUARRYING IN TUNNEL |
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| Abstract: | Moorstone quarrying in tunnel is a first case carried out in China.Creating enough facing space is the one of the most important part in this kind of stone quarrying,and whereas,controlling the blasting charge is the vital factor of the stone in shape from the blasting.The pre-splitting blasting method was used to excavate side hole facing space and to form the seam in this engineering.The water heave cutting was used for the processing the stone.The paper discussed in detail the blasting design including the selection of explosive materials,charging structure and ignition network,as well as the construction processing design and its flowsheet.The practice showed that the method has important meaning and development prospect in saving investment,solving work stone problem and environment protection in municipal engineering projects especially in civil air defense project. |
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| Keywords: | Tunnel excavation Stone quarrying Side leading hole Pre-splitting blasting Water heave cutting |
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