Provided in this disclosure is a portable night vision tunnel for operating a vehicle in a simulated night environment. The night vision tunnel is formed by assembling a plurality of modules on a driving surface to provide a darkened interior in which the vehicle can be driven. Each of the modules are formed of inflatable arch components each having a light-absorptive interior surface for creating the simulated night environment for operating the vehicle. A fastener arrangement connects each of the arch components to an adjoining one to form a single module. The tunnel includes a portal formed on an able arch component at a respective module proximate to the end of the tunnel. The portal admits the vehicle into the tunnel while maintaining the simulated night environment for operating the vehicle. An air circulation system ventilates and circulates air within an interior space of the tunnel.

Provided in this disclosure is a portable night vision tunnel for operating a vehicle in a simulated night environment. The night vision tunnel is formed by assembling a plurality of modules on a driving surface to provide a darkened interior in which the vehicle can be driven. Each of the modules are formed of inflatable arch components each having a light-absorptive interior surface for creating the simulated night environment for operating the vehicle. A fastener arrangement connects each of the arch components to an adjoining one to form a single module. The tunnel includes a portal formed on an able arch component at a respective module proximate to the end of the tunnel. The portal admits the vehicle into the tunnel while maintaining the simulated night environment for operating the vehicle. An air circulation system ventilates and circulates air within an interior space of the tunnel.

The present invention disclose a tunnel wall element comprising a lightweight body element coated with a fire resistant coating providing increased mechanical integrity of the tunnel wall element. The present invention is also related to a method of building road and railway tunnels with the lightweight coated tunnel element.

The present invention disclose a tunnel wall element comprising a lightweight body element coated with a fire resistant coating providing increased mechanical integrity of the tunnel wall element. The present invention is also related to a method of building road and railway tunnels with the lightweight coated tunnel element.

The present invention belongs to the technical field of ocean traffic engineering, and relates to a fabricated ocean tunnel structure with an escape device and an application method thereof. The present invention includes a fabricated ocean tunnel structure and an escape device. the partition plate separates a middle bin in the tunnel, and the escape device is connected into the middle bin; and the escape device includes a rescue capsule, transverse ladders are evenly arranged in the rescue capsule, and a balancing weight block and a rescue equipment area are arranged at the bottom of the rescue capsule. The ocean tunnel structure can be provided with a rescue device during installation, and the safety of personnel escape can be guaranteed; therefore, the safety of the ocean tunnel structure is improved, cost is relatively low, secondary damage to the ocean tunnel structure is not needed.

The present invention belongs to the technical field of ocean traffic engineering, and relates to a fabricated ocean tunnel structure with an escape device and an application method thereof. The present invention includes a fabricated ocean tunnel structure and an escape device. the partition plate separates a middle bin in the tunnel, and the escape device is connected into the middle bin; and the escape device includes a rescue capsule, transverse ladders are evenly arranged in the rescue capsule, and a balancing weight block and a rescue equipment area are arranged at the bottom of the rescue capsule. The ocean tunnel structure can be provided with a rescue device during installation, and the safety of personnel escape can be guaranteed; therefore, the safety of the ocean tunnel structure is improved, cost is relatively low, secondary damage to the ocean tunnel structure is not needed.

The present disclosure provides a shield sealing device and a shield sealing method, a pile wall is arranged at a shield receiving opening, the shield sealing device is mounted on the pile wall, and the shield sealing device comprises: an elastic inner ring, an inner wall of the elastic inner ring adapting to an outer wall of a cutter head of a shield tunneling machine; and a plurality of control units, the plurality of control units being mounted on the pile wall, the plurality of control units being arranged in a circumferential direction of the elastic inner ring at intervals, and a driving end of the control part pressing against an outer side of the elastic inner ring so as to extrude or release the elastic inner ring.

The present disclosure provides a shield sealing device and a shield sealing method, a pile wall is arranged at a shield receiving opening, the shield sealing device is mounted on the pile wall, and the shield sealing device comprises: an elastic inner ring, an inner wall of the elastic inner ring adapting to an outer wall of a cutter head of a shield tunneling machine; and a plurality of control units, the plurality of control units being mounted on the pile wall, the plurality of control units being arranged in a circumferential direction of the elastic inner ring at intervals, and a driving end of the control part pressing against an outer side of the elastic inner ring so as to extrude or release the elastic inner ring.

A modular foundation structure for artificial surface systems includes a structural base layer with a shaped rigid foam having contoured and elevated features, an adhesive layer covering the structural base layer, and an impact and thermal protective layer attached to the structural base layer via the adhesive layer. The impact and thermal protective layer is configured to support an artificial surface layer and has a relatively higher melting point and compression recovery factor than the structural base layer. The shaped rigid may be a closed-cell foam such as Expanded Polystyrene (EPS) or Expanded polyethylene (EPE), and the impact and thermal protective layer may be a bead molded Expanded Polypropylene (EPP) foam. The impact and thermal protective layer may have a melting point of about 300 degrees Fahrenheit, and the structural base layer has a melting point of less than 200 degrees Fahrenheit.

A modular foundation structure for artificial surface systems includes a structural base layer with a shaped rigid foam having contoured and elevated features, an adhesive layer covering the structural base layer, and an impact and thermal protective layer attached to the structural base layer via the adhesive layer. The impact and thermal protective layer is configured to support an artificial surface layer and has a relatively higher melting point and compression recovery factor than the structural base layer. The shaped rigid may be a closed-cell foam such as Expanded Polystyrene (EPS) or Expanded polyethylene (EPE), and the impact and thermal protective layer may be a bead molded Expanded Polypropylene (EPP) foam. The impact and thermal protective layer may have a melting point of about 300 degrees Fahrenheit, and the structural base layer has a melting point of less than 200 degrees Fahrenheit.