Abrégé

A tunnel fire-fighting water supply system, comprising a high-position water tank (1), a fire-fighting water tank (2), a water pipe (3) and a filter tank (4). The high-position water tank (1) is closed, and the high-position water tank (1) is provided on a mountain. The fire-fighting water tank (2) is provided at a tunnel, and the height of the high-position water tank (1) is greater than that of the fire-fighting water tank (2). One end of the water pipe (3) is fixedly connected to the high-position water tank (1), and the other end of the water pipe (3) is fixedly connected to the fire-fighting water tank (2). The water pipe (3) is communicated with both the fire-fighting water tank (2) and the high-position water tank (1). The filter tank (4) is provided inside the high-position water tank (1). The filter tank (4) is slidably connected to the high-position water tank (1), the sliding direction is arranged in the height direction of the high-position water tank (1), and the filter tank (4) is used for filtering gravel in water.

Classes IPC  ?

• E03B 11/10 - Aménagements ou adaptations de réservoirs pour l'alimentation en eau pour l'alimentation en eau à usage public ou alimentation analogue

Abrégé

A construction method for a large-span thin-wall concrete sound barrier pouring trolley. The construction method comprises the following steps: step 1, constructing foundations (9) on two sides of an existing line, and mounting steel rails (91) on the foundations (9); step 2, hoisting a pre-assembled travelling system; step 3, mounting a truss system, that is, transporting machined arch frames (1) to a construction site, hoisting the arch frames (1), and connecting upright posts (3) to connecting beams (4); and adjusting a jack (83) and an oil cylinder (62), adjusting the arch frames (1) and overturning sections (2) to designed elevations, mounting the subsequent arch frames (1) in sequence, and connecting connecting rods between the adjacent arch frames (1) after the arch frames (1) are mounted and adjusted; and step 4, mounting a bottom form on a top arch (11), binding steel bars, mounting side forms, performing concrete pouring, reducing the height of the arch frames by means of the jack (83) and the oil cylinder (62) after the designed strength of concrete is achieved, removing the bottom form, adjusting the height of the jack (83) to make travelling wheels (7) come into contact with the steel rails (91), and moving a trolley. The method is convenient for moving and constructing, and does not affect the passage of an existing line while meeting construction requirements.

Classes IPC  ?

• E01F 8/00 - Aménagements pour absorber ou réfléchir les bruits aériens provenant de la circulation routière ou ferroviaire
• E01D 2/00 - Ponts caractérisés par la section transversale de la structure portante de la travée

Abrégé

A double-wall cofferdam and a pier construction method using same. The double wall cofferdam comprises at least one double-wall cofferdam unit; the double-wall cofferdam unit comprises a wall body (1), a cutting edge (2), an inner support rod (3), and a guide mechanism (4); the cutting edge (2) is arranged at a bottom end of the wall body (1); the inner support rod (3) is horizontally located inside an inner panel (11) of the wall body (1) and is connected to the inner panel (11) of the wall body (1); the guide mechanism (4) comprises a connecting rod (41) and a guide plate (42); the guide plate (42) is connected to the inner panel (11) of the wall body (1) by means of the connecting rod (41); the curvature of the guide plate (42) is adapted to the curvature of the outer wall of a protective cylinder (5) of a drilling pile; and a gap is provided between the guide plate (42) and the outer wall of the protective cylinder (5). The double-wall cofferdam has high structural strength and stability, good water-stopping effect, and reasonable structural design. The structure does not need to be adjusted multiple times during the construction process, so that a smooth construction progress can be ensured.

Classes IPC  ?

• E02D 19/04 - Retenue de pleine eau par batardeaux