摘要
基坑爆破法施工对距离较近的城镇燃气管道会造成扰动,相关规程对城镇燃气管道允许的爆破振速没有明确规定。结合施工现场实际情况,参照近距离建筑物允许爆破振速,取爆破振速上限值为2cm/s,对合理的爆破方法进行研究。在该地质条件下,采用电子雷管、17ms延时时间的群孔爆破可达到较好的减振效果。
Foundation pit blasting construction will cause disturbance to city gas pipeline that is in close distance. The relevant regulations have no clear provisions on the allowable blasting vibration velocity of city gas pipeline. Combined with the actual situation of the construction site, with reference to the allowable blasting vibration velocity of buildings that are in close distance, a reasonable blasting method is studied by taking 2 cm/s as the upper limit of blasting vibration velocity. Under the geological conditions, better damping effect can be achieved by using group hole blasting with electronic detonator and delay time of 17 ms.
作者
杨国增
郭长春
YANG Guozeng GUO Changchun
出处
《煤气与热力》
2017年第9期24-28,共5页
Gas & Heat
关键词
燃气管道
基坑爆破法
近距离
允许振速
上限
gas pipeline
foundation pit blasting
close distance
allowable vibration velocity
upper limit
