工程爆破

2014, v.20(05) 28-31

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地铁隧道临近次高压燃气管线爆破振动监测分析
MONITORING ANALYSIS ON BLASTING VIBRATION OF METRO TUNNEL NEAR GAS PIPELINE WITH INTERMEDIATE PRESSURE

张俊兵;
ZHANG Jun-bing;China Railway No.3 Engineering Group Co.,Ltd.;

摘要(Abstract):

针对深圳地铁隧道暗挖隧道临近次高压燃气管线爆破项目,对爆破振动进行了监测分析,结果表明:爆破振动速度满足燃气管线爆破允许振动速度的技术要求,主振频率也均在允许的控制范围内,爆破参数选择合理,采用电子雷管掏槽方式能够精确控制爆破延时,减小爆破振速,有利于燃气管线的保护。
Based on the metro tunnel subsurface excavation blasting project near gas pipeline with intermediate pressure in Shenzhen,the blasting vibration was monitored and analyzed.Results showed that blasting vibration velocity met the technical requirement about gas pipeline vibration velocity,the main vibration frequency was also within allowable range and blasting parameters were reasonable.By using digital electronic detonator cutting method,the blasting delay was accurately controlled and the blasting vibration velocity was reduced which were beneficial to the protection of the gas pipeline.

关键词(KeyWords): 次高压燃气管线;地铁隧道;数码电子雷管;控制爆破
Intermediate pressure gas pipeline;Metro tunnel;Digital electronic detonator;Controlled blasting

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作者(Author): 张俊兵;
ZHANG Jun-bing;China Railway No.3 Engineering Group Co.,Ltd.;

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