下穿重要结构物浅埋隧道爆破掘进振动控制技术研究  

Research on Vibration Control Technology for Blasting Excavation of Shallow Buried Tunnel Undercrossing Important Structures

作　　者：张小孩 ZHANG Xiao-hai(China Railway 12th Bureau Group Co.,Ltd.,Taiyuan 030000,China)

机构地区：[1]中铁十二局集团有限公司,太原030000

出　　处：《价值工程》2023年第13期49-51,共3页Value Engineering

摘　　要：新建铁路湖州至杭州西至杭黄铁路连接线工程鹿山隧道紧邻高压输电铁塔,因工期紧,该段隧道需采取爆破掘进。为了确保铁塔的安全。通过减振技术的研究及攻关,采取了上下台阶三部开挖法、大间隔微差起爆、设置大中空孔螺旋掏槽眼、水压爆破、高质量特制炮泥等综合减振措施。确保了隧道快速爆破施工,低振动、安全通过邻近铁塔段。The Lushan Tunnel of the newly built Huzhou Hangzhou West to Hangzhou Huang Railway connecting line project is adjacent to the high-voltage transmission tower.Due to the tight construction period,blasting excavation is required for this section of the tunnel.To ensure the safety of the iron tower,through research on vibration reduction technology,comprehensive vibration reduction measures have been taken,such as the three-part excavation method of upper and lower steps,large interval millisecond blasting,setting up large and medium hollow spiral cutting holes,water pressure blasting,and high-quality special blasting mud.It ensures fast blasting construction of the tunnel,low vibration,and safe passage through adjacent tower sections.

关 键 词：铁路隧道 高压输电铁塔 两台阶三部法 超大中空孔螺旋掏槽眼 

分 类 号：U455[建筑科学—桥梁与隧道工程]