土工基础

土工基础 ›› 2020, Vol. 34 ›› Issue (4): 490-492.

• 专题论述 • 上一篇    下一篇

临近建筑岩质高边坡数码雷管爆破开挖参数设计研究

曾春涛1，李 喆2,3   

  1. （1.保利长大工程有限公司，广州 510000；2.中国科学院 武汉岩土力学研究所，武汉 430071；3.中国科学院大学，北京 100049）
  • 收稿日期:2019-07-29 修回日期:2019-10-13 出版日期:2020-08-20 发布日期:2020-08-15
  • 作者简介:曾春涛（1989-），男，工程师，研究方向为路基、桥梁、隧道项目的施工管理。

Parameters for the Digital Detonator for Excavation of a Rock Slope Adjacent to Buildings

ZENG Chuntao1, LI Zhe2,3   

  1. (1.Paulie Growth Engineering Co., Ltd., Guangzhou 510000;
    2.Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan 430071;
    3.University of Chinese Academy of Sciences, Beijing 100049)
  • Received:2019-07-29 Revised:2019-10-13 Online:2020-08-20 Published:2020-08-15

摘要： 依托河百高速K41+016～K41+273段路基硬岩质高边坡，开展了数码雷管边坡开挖爆破施工。针对边坡开挖量大，且距离民房和道路较近的特点，进行了爆破参数设计。爆破开挖施工的现场监测表明，爆破振动设计参数合理，测得的最大爆破振动速度为0.87 cm·s-1,远小于2 cm·s-1的控制标准，该项目的设计和施工对于类似工程的数码雷管爆破设计具有借鉴意义。

关键词: 数码雷管, 爆破, 边坡, 临近建筑

Abstract: Although the digital detonator has many advantages over the conventional electrondelay detonator, the application of the digital detonator on the blasting excavation of the rock slope is rarely reported. In this study, a high rock slope was planned to be excavated at the HeBai Expressway between stations K41+016 and K41+273 and the digital detonator was used in the excavation of the slope. Due to the presence of building structures adjacent to proposed slope to be excavated, a trail study was carried out for providing the design blasting parameters. According to the field measurement of vibration velocity, the maximum tested vibration velocity of the adjacent building was 0.87 cm/s, which was much lower than the controlling threshold of 2 cm/s, indicated that the safety of the adjacent buildings during blasting excavation could be warranted.

Key words: Digital Detonator, Blasting Excavation, Rock Slope, Adjacent Buildings

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