土工基础

›› 2018, Vol. 32 ›› Issue (2): 202-204.

• 工程实录 • 上一篇    下一篇

土石方控制爆破及振动传播规律分析

许广山   

  1. （中广核工程有限公司，广东深圳 518000）
  • 收稿日期:2018-03-01 修回日期:2018-03-06 出版日期:2018-04-30 发布日期:2018-05-09
  • 作者简介:许广山（1972-），男，工程师，研究方向为项目土木施工管理。

Vibration Propagations Studies in the Earthwork Controlled Blasting

XU  Guang-Shan   

  1. (China General Nuclear Group Co., Shenzhen 518000)
  • Received:2018-03-01 Revised:2018-03-06 Online:2018-04-30 Published:2018-05-09

摘要： 针对土石方控制爆破及振动传播规律，结合工程实例，在简要阐述爆破振动产生机理的基础上，深入分析了爆破振动监测及安全控制的方法。研究表明，在土石方控制爆破过程中，建筑物爆破振动速度要远大于地面振动速度，存在明显的放大效应，放大系数随着距离的增加而逐步减低，在进行控制爆破设计时，应充分考虑放大效应。

关键词: 土石方工程, 控制爆破, 振动传播, 规律分析

Abstract: This paper presents a case history of evaluation of the vibration propagation induce by the earthwork controlled blasting. The theoretical aspects of the blasting vibration propagation in the soil and rock media are briefly introduced. The vibration monitoring and safety control of the blasting induced vibrations are also investigated. The monitoring results indicate that the vibrations on the building structures is consistently greater than that of on the ground. A magnifying effect exists and the coefficient of magnification is decreasing with the increase of the distance to the blasting source. In the practice, the effect of magnification on the building structure should be considered.

Key words: Earthwork, Controlled Blasting, Vibration Propagation, Analysis