能量判据在爆破振动安全中的应用初探

Primary Discussion for Application of Energy Criterion in Blasting Vibration Safety

针对现有爆破振动安全判据的某些局限和不足,探讨构建能量判据作为爆破振动安全评价指标。基于MATLAB小波分析工具箱的平台,从能量角度出发,运用小波分析技术对爆破振动信号进行分解,得出各频带爆破振动信号分量的小波频带能量,并构建综合考虑爆破振动强度、频率和持续时间以及受振建(构)筑物固有频率特性等因素影响的折合能量判据。相比现行的振速-频率安全判据,可视为一种进步,其工程应用具有一定实用价值和现实意义。

Aimming for certain limitations and shortcomings of the existing criterion about blasting vibration safety, to discuss building the energy criterion as indicators of blasting vibration for safety evaluation. Based on the platform of wavelet analysis toolkit and from the energy point of view,the wavelet analysis technology for blasting vibration signals＇ decomposition to acquire the wavelet-band energy of blasting vibration signal components; and then building the equivalent energy criterion of a comprehensive consideration of blasting vibration intensity, frequency and duration as well as the natural frequency of buildings （structures） ,etc. Comparing with the current velocity-frequency safety criterion,it can be regard as a kind of progress, and its application on engineering has certain practical value and practical significance.