刘成杰;王卫华;李启月;李泽宇;
LIU Cheng-jie;WANG Wei-hua;LI Qi-yue;LI Ze-yu;School of Resources and Safety Engineering, Central South University;Hunan Junkai Static Blasting Technology Co., Ltd.;

• 1:中南大学资源与安全工程学院
• 2:湖南军凯静爆科技有限公司

摘要(Abstract)：

针对负高程差对爆破振动传播规律的影响,以复杂地形环境下土石方爆破工程中实测的爆破振动信号为基础,利用数据拟合方法和信号处理工具,对比分析有、无高程差2种情况下振动的强度、频率和功率方面的差异规律;并对爆破振动的负高程差效应机理进行分析。结果表明:负高程差加速了质点峰值振速、主频和爆破振动能量的衰减。负高程差情况下,爆破振动能量集中在10～30 Hz的低频区段,且3个分量的能量衰减快慢不同,垂向振动能量衰减最快。研究结果对地形起伏较大场地的爆破振动控制和提高爆破效率有重要意义。
In connection with the influence of negative differences of elevation on the propagation law of blasting vibration, based on the measured blasting vibration signals in earth-rock blasting projects in complex terrain, by using data fitting methods and signal processing tools compare and analyze the difference in intensity, frequency and power of vibration in the two cases with and without differences of elevation, and analyze the mechanism of negative elevation differences effect of blasting vibration. The results show that the negative elevation differences accelerate the decay of the peak particle velocity, the main frequency and the blasting vibration energy. In the case of negative elevation difference, the blasting vibration energy is concentrated in the low-frequency region of 10-30 Hz, and the energy decays differently in the three directions, with the fastest decay of the vertical vibration energy. The results are of great significance for blasting vibration control and improving blasting efficiency in fields with large topographic fluctuations.

关键词(KeyWords)： 爆破振动;负高程差;峰值振速;主频;能量分布
blasting vibration;negative elevation difference;peak particle velocity;main frequency;energy distribution

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金重点资助项目(41630642)

作者(Authors): 刘成杰;王卫华;李启月;李泽宇;
LIU Cheng-jie;WANG Wei-hua;LI Qi-yue;LI Ze-yu;School of Resources and Safety Engineering, Central South University;Hunan Junkai Static Blasting Technology Co., Ltd.;

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