Tunnel Formwork System
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- Tunnel construction procedure A cycle of steps
- Excavation and support of shallow buried and broken section of V grade surrounding rock of portalHole wayThe thin covering layer, poor geological conditions, when the depth of excavation to the arch line, first into the hole wall and the guide pipe shed, the open cut tunnel lining after the completion of the long pipe shed is overlapped on the Dong, to form a fixed end of pipe roof support, opening into the inner wall in the protection of pipe roof under the heading of the two side wall to stagger the footage before and after (5 ~ 10m). If there is a small spacing must also be set prestressed anchor.
- What is the concrete construction of the tunnel invert
- As the name implies, concrete is the concrete that needs to be supportedv
- Tunnel two lining car moving outside the template after the demolition of how the car is similar to the nature of the sliding movement and concrete off
- No, the car is a mechanical structure, the first car on the template brush oil release agent or diesel oil, to prevent sticking
- Loess tunnel construction quality control points
- 3) arch filled with rubble concrete should meet the requirements of the relevant regulations.4) concrete or rubble concrete arch above the back should reach the design strength of concrete arch in the back 70% after construction.
- The tunnel lining is wood, how should support?
- Small pipe or large, medium pipe shed is the advanced support for the broken rock area or into, out of the hole, of course, grouting, grouting without losing the significance of the implementation.
- How to design the general layout of the tunnel construction organization design
- Feng Shui pipeline, transformer location, power lines, warehouses, steel parts processing
- Tunnel steel arch behind the steel mesh after a layer of fine iron wire mesh what effect is there?
- 2, ingate construction shaft sealing, to get rid of advanced small pipe grouting reinforced concrete, and supported the upper ingate upper grille steel frame, injection, get rid of the upper concrete lower reinforced concrete, erecting of ingate to spray the concrete lower grille steel frame.
- Demolition of tunnel bearing formwork for several days
- The average temperature of 20 degrees, can be removed for 28 days. High temperature removal time is short, low temperature stripping time longer.