A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Over-crossing existing subway tunnel between-pile soil clearing method
The invention discloses an over-crossing existing subway tunnel between-pile soil clearing method. The over-crossing existing subway tunnel between-pile soil clearing method comprises the following steps of: firstly, arranging an shock absorbing elastic support between two adjacent isolating piles; vertically arranging a plurality of pre-cracking drill holes surrounding each isolating pile; dividing the between-pile soil surrounding each isolating pile into a stable region and an unstable region; finally carrying out layered excavation on the between-pile soil in the unstable region by adopting machinery; and carrying out layered excavation on the between-pile soil in the stable region by adopting manpower. By utilizing vibration wave transmission theory and arranging the shock absorbing elastic support, the over-crossing existing subway tunnel between-pile soil clearing method disclosed by the invention realizes effective absorption of disturbance and vibration generated in excavation, reduces the disturbance to the isolating piles, damages the integrity of the between-pile soil by forming the pre-cracking drill holes surrounding the isolating piles so that the between-pile soil in the stable region can be conveniently removed in an excavation way and partial vibration wave generated in excavation in the unstable region is effectively absorbed, greatly reduces the disturbanceto the isolating piles and over-crossing existing tunnel surrounding rock in an excavation process by adopting machinery and manpower in combination with excavation, realizes high safety and simple operation, and spends a short time.
本发明公开了一种上跨既有地铁隧道桩间土清理方法，首先在相邻两个隔离桩之间设置减振弹性支撑，在每个隔离桩的周围竖向设置若干预裂钻孔，将隔离桩周围的桩间土划分为稳定区域和非稳定区域；最后采用机械对非稳定区域的桩间土进行分层挖除，采用人工对稳定区域的桩间土进行分层挖除；本发明中利用振动波传播原理，通过设置减振弹性支撑，实现了对挖除产生的扰动和振动的有效吸收，减少对隔离桩的扰动；通过在隔离桩周围设置预裂钻孔，破坏了桩间土的整体性，便于对稳定区域桩间土的挖除，有效吸收非稳定区域挖除时产生的部分振动波；采用机械和人工配合挖除，大大减小了挖除过程对隔离桩和上跨既有隧道围岩的扰动，安全性高，操作简单，用时短。
Over-crossing existing subway tunnel between-pile soil clearing method
The invention discloses an over-crossing existing subway tunnel between-pile soil clearing method. The over-crossing existing subway tunnel between-pile soil clearing method comprises the following steps of: firstly, arranging an shock absorbing elastic support between two adjacent isolating piles; vertically arranging a plurality of pre-cracking drill holes surrounding each isolating pile; dividing the between-pile soil surrounding each isolating pile into a stable region and an unstable region; finally carrying out layered excavation on the between-pile soil in the unstable region by adopting machinery; and carrying out layered excavation on the between-pile soil in the stable region by adopting manpower. By utilizing vibration wave transmission theory and arranging the shock absorbing elastic support, the over-crossing existing subway tunnel between-pile soil clearing method disclosed by the invention realizes effective absorption of disturbance and vibration generated in excavation, reduces the disturbance to the isolating piles, damages the integrity of the between-pile soil by forming the pre-cracking drill holes surrounding the isolating piles so that the between-pile soil in the stable region can be conveniently removed in an excavation way and partial vibration wave generated in excavation in the unstable region is effectively absorbed, greatly reduces the disturbanceto the isolating piles and over-crossing existing tunnel surrounding rock in an excavation process by adopting machinery and manpower in combination with excavation, realizes high safety and simple operation, and spends a short time.
本发明公开了一种上跨既有地铁隧道桩间土清理方法，首先在相邻两个隔离桩之间设置减振弹性支撑，在每个隔离桩的周围竖向设置若干预裂钻孔，将隔离桩周围的桩间土划分为稳定区域和非稳定区域；最后采用机械对非稳定区域的桩间土进行分层挖除，采用人工对稳定区域的桩间土进行分层挖除；本发明中利用振动波传播原理，通过设置减振弹性支撑，实现了对挖除产生的扰动和振动的有效吸收，减少对隔离桩的扰动；通过在隔离桩周围设置预裂钻孔，破坏了桩间土的整体性，便于对稳定区域桩间土的挖除，有效吸收非稳定区域挖除时产生的部分振动波；采用机械和人工配合挖除，大大减小了挖除过程对隔离桩和上跨既有隧道围岩的扰动，安全性高，操作简单，用时短。
Over-crossing existing subway tunnel between-pile soil clearing method
一种上跨既有地铁隧道桩间土清理方法
HU CHANGMING (author) / DU YIPU (author) / LU QIAN (author)
2020-05-15
Patent
Electronic Resource
Chinese
Subway station over crossing existing tunnel and construction method thereof
| European Patent Office | 2020
| European Patent Office | 2024
Multi-angle cement soil pile construction system in subway tunnel
| European Patent Office | 2022
| European Patent Office | 2023