声波测试技术在评价爆破震动对岩体的影响中的应用

在抽水蓄能电站上水库盆的岩体开挖过程中,通常采用工程爆破的技术手段。爆破施工中要尽可能减小爆破震动对上水库盆的影响,控制岩体松动破坏的范围,为下一步防渗工程的实施奠定基础。如何在提高工程施工效率的同时严格控制爆破震动对岩体产生影响,需要通过各种监测手段和技术方法来监测、分析和评价爆破施工对岩体的影响范围,然后来指导爆破施工。本文通过具体工程案例,介绍了施工前或施工后通过声波测试的实际应用,来评价爆破震动对周围岩体的影响,并圈定具体影响范围。

The Application of Acoustic Testing in the Evaluation of the Blasting Vibration Impacting on Rock

In the process of rock excavation on reservoir basin of the pumped-storage power station, blasting technology is usually adopted. For further implementation of the seepage control project, we must minimize the blasting vibration on reservoir basin during the blasting construction and controlling the inlfuence of the scope of rock loose damage. For improving construction efifciency and strictly controlling impact of blasting vibration on rock, it needs to monitor tools and techniques through a variety of methods to monitor, analyze and evaluate the impact of blasting on rock mass range, and then to guide the blasting. This paper describes the speciifc case of the construction project before or after construction through the practical application of acoustic test, to evaluate the blasting vibration impact on the surrounding rock, and to delineate the speciifc inlfuence.