A construction layout for caverns of an underground nuclear power plant, including: two primary caverns accommodating nuclear reactor powerhouses, combined caverns, electric powerhouse caverns, pressure relief caverns, a first primary traffic tunnel, a second primary traffic tunnel, a third primary traffic tunnel, a top adit system, and a ground adit system. Each combined cavern is disposed on one side of each of the two primary caverns. Each electric powerhouse cavern and each pressure relief cavern are disposed on two sides of each of the two primary caverns perpendicular to the longitudinal direction of the mountain. Each electric powerhouse cavern is perpendicular to the longitudinal direction of the mountain. The first primary traffic tunnel and the third primary traffic tunnel are disposed along the longitudinal direction of the mountain on outer sides of the two combined caverns, respectively.

A construction layout for caverns of an underground nuclear power plant, including: two primary caverns accommodating nuclear reactor powerhouses, combined caverns, electric powerhouse caverns, pressure relief caverns, a first primary traffic tunnel, a second primary traffic tunnel, a third primary traffic tunnel, a top adit system, and a ground adit system. Each combined cavern is disposed on one side of each of the two primary caverns. Each electric powerhouse cavern and each pressure relief cavern are disposed on two sides of each of the two primary caverns perpendicular to the longitudinal direction of the mountain. Each electric powerhouse cavern is perpendicular to the longitudinal direction of the mountain. The first primary traffic tunnel and the third primary traffic tunnel are disposed along the longitudinal direction of the mountain on outer sides of the two combined caverns, respectively.

A roller bracket having a base, a raising and lowering mechanism, a platform, and horizontal and vertical rollers. The base is attached to the vertical face of a starter wall at a level to provide a desired height for a concrete ceiling. With the platform in the raised position, the bottom edge of a tunnel form is lowered between the vertical roller and the starter wall onto the horizontal rollers. A wedge is driven between the vertical roller and the tunnel form to seal the tunnel form against the starter wall. After concrete has been poured, retained by the seal, and cured to form the concrete walls and ceiling, the mechanism can lower the platform to strip the tunnel form from the tunnel. The tunnel form can then be rolled away on the horizontal rollers while being retained on the horizontal rollers by the vertical roller and the starter wall.

A roller bracket having a base, a raising and lowering mechanism, a platform, and horizontal and vertical rollers. The base is attached to the vertical face of a starter wall at a level to provide a desired height for a concrete ceiling. With the platform in the raised position, the bottom edge of a tunnel form is lowered between the vertical roller and the starter wall onto the horizontal rollers. A wedge is driven between the vertical roller and the tunnel form to seal the tunnel form against the starter wall. After concrete has been poured, retained by the seal, and cured to form the concrete walls and ceiling, the mechanism can lower the platform to strip the tunnel form from the tunnel. The tunnel form can then be rolled away on the horizontal rollers while being retained on the horizontal rollers by the vertical roller and the starter wall.

A structure having at least one flexible material structured and arranged to withstand a tensile load, at least one support structure configured to support the flexible material and structured and arranged to withstand a compressive load, and at least one enclosed volume at least partially defined by the at least one flexible material, the at least one enclosed volume being configured to be maintained as a low-pressure environment.

A structure having at least one flexible material structured and arranged to withstand a tensile load, at least one support structure configured to support the flexible material and structured and arranged to withstand a compressive load, and at least one enclosed volume at least partially defined by the at least one flexible material, the at least one enclosed volume being configured to be maintained as a low-pressure environment.

An underground steel-concrete structure pipeline with a spiral composite reinforcement ring on an inner wall and a manufacturing method thereof. The pipeline includes a pipe body, multiple rows of concrete overflow holes spirally arranged on a pipe wall of the pipe body, a reinforcement ring capable of wrapping the concrete overflow holes, and concrete is filled in a hollow cavity between the reinforcement ring and the pipe wall to form a spiral concrete flow passage. The advantages are that the overall annular strength of the pipeline is reinforced by the reinforcement ring; the concrete filled between the reinforcement ring and the inner wall of the pipe body improves the compressive strength of the pipe body; the concrete overflowing from the overflow holes on the pipe wall combines the pipe body with a pit; and the pipeline solves the difficulty of using large-size steel structure products in underground common pipeline projects.

An underground steel-concrete structure pipeline with a spiral composite reinforcement ring on an inner wall and a manufacturing method thereof. The pipeline includes a pipe body, multiple rows of concrete overflow holes spirally arranged on a pipe wall of the pipe body, a reinforcement ring capable of wrapping the concrete overflow holes, and concrete is filled in a hollow cavity between the reinforcement ring and the pipe wall to form a spiral concrete flow passage. The advantages are that the overall annular strength of the pipeline is reinforced by the reinforcement ring; the concrete filled between the reinforcement ring and the inner wall of the pipe body improves the compressive strength of the pipe body; the concrete overflowing from the overflow holes on the pipe wall combines the pipe body with a pit; and the pipeline solves the difficulty of using large-size steel structure products in underground common pipeline projects.

A delaminated subway station structure in a sea-land connection region includes an openly-excavated station hall, a platform floor, a first air shaft duct, a second air shaft, up and down entrances and exits, a barrier-free entrance and exit, and an under-rail street passage, where the platform floor is formed by expanding an existing running tunnel, such that a double-vault structure of the platform floor is formed; two groups of up and down entrances and exits are disposed, and located in waiting regions on two sides respectively to connect expanded ear chambers on two sides and the openly-excavated station hall; two groups of barrier-free entrances and exits are disposed, and located in the waiting regions on the two sides respectively; and the under-rail street passage is closely attached to a bottom plate of the existing running tunnel to form an underpass and connects to the expanded ear chambers.

A delaminated subway station structure in a sea-land connection region includes an openly-excavated station hall, a platform floor, a first air shaft duct, a second air shaft, up and down entrances and exits, a barrier-free entrance and exit, and an under-rail street passage, where the platform floor is formed by expanding an existing running tunnel, such that a double-vault structure of the platform floor is formed; two groups of up and down entrances and exits are disposed, and located in waiting regions on two sides respectively to connect expanded ear chambers on two sides and the openly-excavated station hall; two groups of barrier-free entrances and exits are disposed, and located in the waiting regions on the two sides respectively; and the under-rail street passage is closely attached to a bottom plate of the existing running tunnel to form an underpass and connects to the expanded ear chambers.