期刊
JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY
卷 18, 期 5, 页码 1709-1718出版社
JOURNAL OF CENTRAL SOUTH UNIV TECHNOLOGY
DOI: 10.1007/s11771-011-0892-2
关键词
deep-buried cavern; open pit; blasting vibration; power spectra; time-energy density; in-situ stress
资金
- National Basic Research Program of China [2010CB732003]
- National Natural Science Foundation of China [50725931, 50779050, 50909077]
The measured data of vibrations induced by excavation of deep-buried cavern and open pit with method of bench blasting were analyzed by Fourier Transform and Wavelet Transform, and the characteristics of vibrations induced under these two circumstances were studied. It is concluded that with the similar rock condition and drilling-blasting parameters, vibration induced by bench blasting in deep-buried cavern has a higher main frequency and more scattered energy distribution than that in open pit. The vibration induced by bench blasting in open pit is mainly originated from the blast load, while the vibration induced by bench blasting in deep-buried cavern is the superposition of vibrations induced by blast load and transient release of in-situ stress. The vibration induced by transient release of in-situ stress increases with the stress level.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据