三峡工程永久船闸高边坡岩体变形声发射监测

岩体声发射检测是当今国内外积极开发研究的岩体动态监测新技术之一,为了保证三峡船闸顺利建设,在建设过程中采用了声发射技术对船闸高边坡进行全天候在线监测。声发射作为动态监测技术在大型边坡岩体动态监测中具有明显优势。本文将小波变换和神经网络应用到声发射检测之中,能够准确地对岩体稳定性进行预测预报。现场监测表明,利用声发射技术对大型船闸高边坡岩体稳定性及其发展趋势和边坡支护效果,作出了符合实际的评价和有效的预测预报。

Monitoring of acoustic emission during rock deformation for high slope of the permanent shiplock structures of Three Gorges Project

Rock mass acoustic emission detection technology is a kind of new technology for rock mass dynamic monitoring. In order to build a large ship lock smoothly, the high slope was monitored all day and on line with the acoustic emission （AE） technique during construction. As a new dynamic monitoring technique, the AE technique occupies a dominant position in the dynamic monitoring of the large rock slope. In the paper, the wavelet transform and the neural networks were applied in the AE detecting technique. The monitoring results show that in the process of explosion and digging for the large ship lock room, the slope stability, its developing trend and its consolidation effect are reported and evaluated with the AE technique.