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The Ordnance Survey released Open Street Raster (1:10k) which has an under-land curve of mostly the correct width and an alignment to within ~50 metres of the prior OSM data-although its accuracy is unclear: has incorrect positioning undersea, and it does not include the widened profiles through Castle Hill/Holywell and the Shakespeare Underground Development. Closer to the coasts it should be more accurate. The location of the tunnel line itself is probably off by +/-1 kilometre in the mid-sections where it is following the Chalk Marl, as are the wiggles in the French section through the faults. Physically the service tunnel correctly weaves around the two running tunnels at the undersea crossovers and these and the tunnel's intermediate accesses at Shakespeare Cliff and Sangatte are included. These have separate pick-up points so two more hidden ways 221639646 221639646 221626903 221626903 exist to enforce cycle routeing exit bicycle routeing is not done yet as it is unclear what happens for drop-off. Additional hidden routes exist for bicycles, as these are picked up at an arranged meeting point in a Eurotunnel-branded people-mover+trailer unit (sub-contracted out to M W Cave of Hythe who kindly confirmed the pick-up points and routeing), and driven through inside the Tourist Shuttle. Motorbikes/coaches/cars/motorhomes need to use the Tourist shuttles and tourist-entrances, for the moment this is done with hgv=no. The route is tagged with Proposed features/shuttle_train for the Eurotunnel Shuttle ro-ro service and two additional parallel hidden ways 180399801 180399801 180387103 180387103 for routeing (see OSRM example). If the newly-installed GSM/3G network gets picked up for geo-location with modern phone-based satnavs, it should be possible to semi-accurately animate the moving route correctly while the Shuttle is under the sea. The present status (May 2013) is that the 1987 Channel Tunnel is pretty well mapped from general knowledge, and Eurotunnel's two terminals are accurately mapped from Bing satellite coverage. The Channel Tunnel is significantly longer than any other tunnels that might have been tried with a IMU though, so the error drift is going to be somewhat larger. LiDAR from one of the open Arbel HGV wagons should work too. The same could be done with a gyro/IMU on a standard Le Shuttle or Eurostar crossing as other people have suggested for other underground tunnels. For data-logging, it would appear that at least some journalists have been allowed to drive electric cars through the service tunnel as a gimmick, and a car with a high-precision inertial measurement unit could source data for the service tunnel. The only organisations with that dataset in electronic form are likely to be Eurotunnel Groupe, SNCF International (Mauzin, IRIS 320 track recording train) or the Inter-Governmental Commission (deposited plans). We do however have a large number of numerical facts to work from this page attempts to compile those. Whilst a huge amount of academic work was published during the construction phase, putting it in the "public knowledge" domain, there is no dataset under a licence that can be imported directly into OpenStreetMap. The 1881, 19 service bores all coincide at an underwater point off Aycliff-here the 1974 bore forms a section of the latter-day 1987 service tunnel and the 1881 tunnel crosses on the same level at an oblique angle. The 1987 Channel Tunnel 2147197 2147197 is the present-day final result and consists of one medium and two large bores.
#Channel tunnel plus#
The 1974 Channel Tunnel was an experimental medium-bore tunnel started from a sloping Adit A1 145678853 145678853 at Shakespeare Cliff, plus an experimental medium-bore sloping adit 221205117 221205117 started from Sangatte.The 1882 Channel Tunnel was an experimental 1,669-metre narrow-bore tunnel started at Sangatte.The 1881 Channel Tunnel 154821021 154821021 was an experimental 1,865-metre narrow-bore tunnel started from a vertical shaft at Shakespeare Cliff heading towards the Dover Harbour walls.The 1880 Channel Tunnel 154820160 154820160 was an experimental 820-metre narrow-bore tunnel, started from a horizontal adit at Chapel-le-Ferne.