应用声波测试技术分析开挖爆破对边坡的影响

Analyses on the Impact of Blasting Excavation in Side Slope Using Ultrasonic Test Technology

随着高陡边坡开挖在铁路、公路、水电站等国家基础建设中的大量运用,如何最大限度地减小爆破振动对边坡的影响,提高边坡的稳定性,已成为一个不容忽视的难题。探讨了声波测试技术在边坡开挖中的作用;将声波测试应用于某水电站边坡开挖过程分析,在炮前、炮后和再炮后分别对测区进行了测试,由测试数据绘出爆破前后声速VP(m/s)与孔深h(m)关系曲线图,并通过分析得出了一系列结论,用以指导爆破施工。

With the swift and violent development of economic construction of our country, it is a common occurrence that the high and steep side slope is excavated in countrys capital construction, such as railway, highway, power station. It has already become a difficult and unignoral problem that how to blow up vibration impact on the slope to reduce to the maximum extent, and how to improve stability of slope. The article explains basic principle and computing technology of the ultrasonic tests speed, and discusses the function of the ultrasonic testes technology to excavate before blasting, the later and again etc. It draws relation curve graph of sound velocity V_p(m/s) and hole deep h (m) before and after blasting from the data of testing, and draws a series of conclusions to guide the construction of blasting by analyzing.