摘要
以大连玉华220 kV输电线路新建工程0号竖井爆破为例,在复杂城市环境中设计了微差控爆起爆网络进行隧道竖井爆破震动控制。用TC-4850测震仪对重点监测对象的震速进行测试,结果表明,微差控爆技术在城市隧道竖井开挖中爆破震动速度得到有效地控制,且有效地提高了频率。同时,岩石大块率低,爆破效果很好。
With the case of the blasting operation in Shaft No. 0 in 220 kV transmission line construction,the millisecond blasting network is designed in complicated urban environment to control vibration of blasting operation in tunnel shaft. The vibration monitor of TC-4850 is applied to test the vibration speed of the key monitoring objects. The tests prove that application of the millisecond blasting technology in excavation of the urban tunnel shaft effectively controls the blasting vibration speed and increases frequency. Meanwhile,rate of the larger rock is decreased and the blasting effect is as expected.
作者
赵铁军
徐佩洪
陈翔
闫鸿浩
ZHAO Tiejun;XU Peihong;C H E N Xiang;Y A N Honghao(The State Key Laboratory of Industrial Equipment Structural Analysis,Dalian University of Technology, Dalian 116024,China;Dalian Power Supply Company,Electric Power Co.,Ltd.,of Liaoning Province,State Grid,Dalian 116000,China)
出处
《西北水电》
2017年第5期47-49,共3页
Northwest Hydropower
基金
国家自然科学基金资助(10872044
10602013
10972051
10902023)
关键词
微差控爆
竖井
爆破震动
城市隧道
millisecond blasting
shaft
blasting vibration
urban tunnel
