预裂爆破减振作用效果分析

Analysis of Effect of Shock-absorption in Presplit Blasting

周宁水电站地下厂房在开挖爆破中采用了预裂爆破技术;为了监测预裂爆破减振效果,指导施工,沿预裂缝两侧布置测点进行实地爆振测试;介绍了厂房开挖爆破及预裂爆破工艺,给出了预裂缝两侧振动实测数据,据此分析了预裂爆破减振作用及影响因素。

Presplit blasting was applied to an excavation blasting in Zhouning Hydropower Station. In order to monitor its effect of shockabsorption, two series of sensors on the side of wall were patterned to test and measure the vibration, the relevant theory was applied to describe the process of rock blasting and presplit blasting ,a series of data were recorded to analyze its effect of reducing blasting vibration and influential factor.