Construction device and method for vertical pipe planting in drainage tunnel

Abstract

The invention discloses a drainage tunnel stand pipe planting construction device. The drainage tunnel stand pipe planting construction device comprises a ship platform with one side being provided with a plurality of punching pile positioning and guiding frames horizontally at intervals. Each punching pile positioning and guiding frame is composed of two steel pipe trusses which are arranged in parallel and provided with rectangular cross sections, and the upper ends of a plurality of steel casings are supported and locked on every two corresponding steel pipe trusses. A method comprises the steps of (1) drainage port punching construction, (2) percussion drilling or rotary-drill drilling, (3) drainage port stand pipe construction and (4) connection of a stand pipe and a tunnel. According to the drainage tunnel stand pipe planting construction device, the ship platform is adopted for construction, construction is not influenced by winter monsoons and can be continuously conducted, and the construction period is shortened. A plurality of punching piles can be simultaneously conducted, and the common problems that during pipe-jacking construction, the pipe jacking resistance is overlarge, a cave outlet close cover is clamped, and the bearing capacity of a tunnel base is insufficient are solved. The construction efficiency of steel casing pile sinking and stand pipe planting is improved, and construction safety is ensured.

Description

technical field [0001] The invention relates to a drainage tunnel project, in particular to a pipe planting construction device and method which are vertically arranged at the head of the drainage tunnel and communicated with the drainage tunnel, and are used as drainage outlets, sewage outlets and water intakes, and belong to the technical field of hydraulic engineering . Background technique [0002] The pipe planting technology extends the self-planting pile technology. The pile planting technology refers to the technology of fixing the bottom of the pipe pile in the seabed rock in the port hydraulic or bridge engineering. The "piles" are actually steel pipes or piles with through holes inside. The prefabricated pipe is called "pile planting" because its purpose is to pile; "Planting". [0003] The existing tunnel project and the construction of the drainage outlet, sewage outlet and water intake installed vertically at the drainage head adopt the construction method of...

AI Technical Summary

Problems solved by technology

[0003] The existing tunnel project and the construction of the drainage outlet, sewage outlet and water intake installed vertically at the drainage head adopt the construction method of vertically lifting the top of the inner side of the tunnel. The vertical jacking construction of this construction method is different from that of the horizontal The procedures of tunnel construction are alternate and complex, and they influence and restrict each other, which needs to occupy the construction period of key lines

At the same time, it is greatly affected by the seasonal climate, and the safety is affected. In order to ensure the safety of the construction, it can only be stopped when the sea condition is poor.

In addition, it is very difficult to accurately align the vertical jacking hole reserved for the tunnel with the offshore punching hole. The construction method of vertically jacking the vertical pipe in the tunnel has a long construction period and low construction safety. During construction, such Faults such as excessive jacking resistance, jamming of the exit cover, and insufficient bearing capacity of the tunnel base seriously affect the normal construction of the vertical pipe planting of the drainage tunnel

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