梁琨,王树欣,张宪堂,焦淑军,王海亮

• 1:山东科技大学山东省土木工程防灾减灾重点实验室
• 2:山东科技大学土木工程与建筑学院
• 3:日照市政工程集团
• 4:山东科技大学安全与环境工程学院

摘要(Abstract)：

以济南市顺河快速路南延(英雄山立交至南绕城高速)建设工程为工程背景,结合现场爆破振动监测及ANSYS/LS-DYNA建立模型进行对比研究,分析小净距隧道爆破开挖中,先行洞在后行洞上台阶爆破作用下的动力响应。结果表明:先行洞三向振速中,X水平径向振速最大,且与合速度大小接近,先行洞振速由掌子面后方至隧道入口处呈现衰减趋势,提出了现场监测应根据对于X水平径向的数据调整爆破方案参数。针对济南隧道的施工条件,现场采用CD法施工方法,通过控制实际爆破单段药量、炮孔深度、超前小导管、复合衬砌超前支护等措施取得了良好的爆破效果。

关键词(KeyWords)： 小净距隧道;爆破振动;钻爆施工;振动监测;数值模拟

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51874189);; 山东省自然科学基金(ZR2017MEE043、ZR2019PEE044);; 山东研究生教育创新计划项目(SDYY15086、SDYY15088)

作者(Author): 梁琨,王树欣,张宪堂,焦淑军,王海亮

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