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gptkbp:instance_of
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gptkb:cave
|
|
gptkbp:academic_programs
|
Innovative for its time
|
|
gptkbp:accessibility
|
Limited for the public
|
|
gptkbp:associated_with
|
Brunel's engineering projects
|
|
gptkbp:breathability
|
Natural ventilation system
|
|
gptkbp:challenges
|
Water ingress
|
|
gptkbp:communication_system
|
Modern signaling technology
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|
gptkbp:construction_material
|
gptkb:Brick
|
|
gptkbp:construction_started
|
1873
1886
|
|
gptkbp:crosses
|
gptkb:River_Severn
|
|
gptkbp:design
|
Brick arch
|
|
gptkbp:emergency_exits
|
gptkb:Yes
|
|
gptkbp:emergency_services
|
gptkb:Limited
gptkb:Yes
Conducted regularly
Trained personnel available
|
|
gptkbp:environmental_impact
|
Mitigated during construction
|
|
gptkbp:famous_for
|
Being the longest rail tunnel in the UK at the time of opening
|
|
gptkbp:famous_landmark
|
gptkb:Yes
|
|
gptkbp:flooding_incidents
|
Occasional
|
|
gptkbp:geological_formation
|
Triassic sandstone
|
|
gptkbp:has_toll
|
No
|
|
gptkbp:historical_event
|
Opened by the Prince of Wales
|
|
gptkbp:historical_significance
|
First rail tunnel under a major river in the UK
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Severn Tunnel
|
|
gptkbp:length
|
7.0 miles
|
|
gptkbp:lighting
|
Electric lighting
|
|
gptkbp:location
|
gptkb:England
gptkb:Wales
|
|
gptkbp:maintenance
|
Regular inspections
|
|
gptkbp:max_speed
|
75 mph
|
|
gptkbp:number_of_tracks
|
2
|
|
gptkbp:opened
|
1886
|
|
gptkbp:owner
|
gptkb:Network_Rail
|
|
gptkbp:railway_line
|
gptkb:South_Wales_Main_Line
None within the tunnel
Significant in UK railway history
|
|
gptkbp:renovation
|
2000s
|
|
gptkbp:safety_features
|
Fire alarms
|
|
gptkbp:serves
|
gptkb:Great_Western_Railway
|
|
gptkbp:tourist_attraction
|
No
|
|
gptkbp:tunnel_construction
|
Involved thousands of workers
|
|
gptkbp:tunnel_history
|
Rich history since 19th century
|
|
gptkbp:tunnel_inspection
|
Regular inspections required
|
|
gptkbp:tunnel_maintenance
|
Ongoing maintenance required
|
|
gptkbp:tunnel_safety
|
High safety standards maintained
|
|
gptkbp:tunnel_status
|
Operational
|
|
gptkbp:tunnel_survey
|
Conducted before construction
|
|
gptkbp:tunnel_usage
|
Heavily used by trains daily
|
|
gptkbp:used_by
|
Freight trains
Passenger trains
|
|
gptkbp:ventilation_shafts
|
gptkb:Yes
|
|
gptkbp:wing_configuration
|
Railway tunnel
5.5 meters
Designed for heavy freight traffic
|
|
gptkbp:bfsParent
|
gptkb:South_Wales_Main_Line
|
|
gptkbp:bfsLayer
|
6
|