王海军;王晟华;赵岩;王海龙;
WANG Hai-jun;WANG Sheng-hua;ZHAO Yan;WANG Hai-long;North Prosperous Construction Group Co., Ltd.;Hebei Innovation Center of Prefabricated Construction and Underground Engineering;School of Mechanics and Civil Engineering, China University of Mining and Technology (Beijing);Key Laboratory of Civil Engineering Diagnosis,Reconstruction and Disaster Resistance of Hebei Province;

• 1:北旺集团有限公司
• 2:河北省装配式建造与地下工程技术创新中心
• 3:中国矿业大学(北京)力学与建筑工程学院
• 4:河北省土木工程诊断改造与抗灾重点试验室

摘要(Abstract)：

为研究隧道爆破振动效应的变化规律,依托草帽山隧道工程,对现场实测爆破振动数据进行处理分析。首先,依据现有的爆破振动预测方程,归纳得到适用于本隧道工程的爆破振动强度预测模型。然后,利用小波包分析对实测信号进行处理。结果表明:随着最大单响药量的增大及爆心距的增加,爆破低频带能量占有百分比呈升高的趋势;一般构筑物的自振频率位于较低频带,因此隧道爆破施工很大程度会引起周边建筑物产生共振现象。提出适用于本隧道工程的控制爆破措施,并通过爆破振动强度及小波包能量分布规律验证了其可行性。
In order to study the changing law of tunnel blasting vibration effect, based on the Caomaoshan tunnel project, the field measured blasting vibration data was processed and analyzed. First, according to the existing blasting vibration prediction equation, a blasting vibration intensity prediction model suitable for this tunnel project was summarized. Then, the wavelet packet analysis was used to process the measured signals. The results show that with the increase of the maximum single hole charge and the increase of the blasting center distance, the percentage of energy in the low frequency band of blasting tends to increase. Generally, the natural frequency of the structure is located in the lower frequency band, so the tunnel blasting construction will largely cause the resonance of the surrounding buildings. This paper proposes a controlled blasting measure suitable for this tunnel project, and verifies its feasibility through the blasting vibration intensity and wavelet packet energy distribution law.

关键词(KeyWords)： 现场实测;回归分析;小波包分析;控制爆破
on-site monitoring;regression analysis;wavelet packet analysis;controlled blasting

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(51878242)

作者(Authors): 王海军;王晟华;赵岩;王海龙;
WANG Hai-jun;WANG Sheng-hua;ZHAO Yan;WANG Hai-long;North Prosperous Construction Group Co., Ltd.;Hebei Innovation Center of Prefabricated Construction and Underground Engineering;School of Mechanics and Civil Engineering, China University of Mining and Technology (Beijing);Key Laboratory of Civil Engineering Diagnosis,Reconstruction and Disaster Resistance of Hebei Province;

DOI: 10.19931/j.EB.20200219

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