工程爆破

2004, (04) 78-80+88

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黄壁庄水库溢洪道开挖爆破震动影响分析
ANALYSIS ON EFFECT OF BLASTING VIBRTATION DURING EXCAVATION OF A SPILLWAY IN HUANGBIZHUANG RESERVOIR

刘治峰,郭永为,张永哲
LIU Zhi-feng~1,GUO Yong-wei~1,ZHANG Yong-zhe~2(1.Hydraulic Engineering Bureau of Hebei Province,Shijiazhuang 050021,China; 2.China Institute of Water Resource and Hydropower Research,Beijing 100044,China)

摘要(Abstract):

非常溢洪道开挖过程中进行了爆破震动观测试验 ,以认识爆破地震波衰减规律 ,同时了解需重点保护的原闸室对爆破震动的动力响应。通过对测震数据的回归分析 ,得出了能描述该现场地震波衰减规律的表达式 ,并确定了相邻建筑物的安全控制标准。考虑到闸墩的动力放大作用 ,建议按 5cm/s控制闸墩基础的振动。该工程完工多年 ,运行至今未发现任何问题
During excavation of an extraordinary spillway,the blasting vibration was observed and measured so as to understand the attenuation laws of seismic waves and the dynamic response of original floodgate to blasting vibration.Through regressive analysis on measured vibration data,the expressions that can describe the attenuation laws of seismic waves in the site were obtained,and the safety criterion for near constructions was determined.Considering the dynamic magnification of floodgate pier for blasting vibration,it was proposed that the safety criterion of 5 m/s was used for control of the vibration of floodgate-pier foundation.So far, the project has been completed for many years and no problem occurs.

关键词(KeyWords): 溢洪道;爆破震动;安全判据;开挖爆破
Spillway; Blasting vibration; Safety criterion; Excavation blasting

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作者(Author): 刘治峰,郭永为,张永哲
LIU Zhi-feng~1,GUO Yong-wei~1,ZHANG Yong-zhe~2(1.Hydraulic Engineering Bureau of Hebei Province,Shijiazhuang 050021,China; 2.China Institute of Water Resource and Hydropower Research,Beijing 100044,China)

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