Ligne 63 KV - (Ampèrevielle-Tournay) - Piquage

### Nombre de pylônes:

252 supports caténaires + 2 poteaux métalliques type Nappe voûte + 3 poteaux type Nappe voûte + 2 poteaux type Drapeau + 1 à 6 Triangles

## Présentation:

La ligne à haute tension reliant les postes d'Ampèrevielle (Séméac) à Tournay est une ligne de 63 KV créée en 1914 située dans le département des Hautes-Pyrénées en région Occitanie. Elle fait le piquage à Tournay.

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class=\"mw-parser-output\"\u003E\u003Cp\u003ETournay (SNCF)\n\u003C/p\u003E\u003C/div\u003E","title":"Tournay (SNCF)\n","link":"","lat":43.1825637837709,"lon":0.23972952429119232,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EAmperevielle (SNCF)\n\u003C/p\u003E\u003C/div\u003E","title":"Amperevielle (SNCF)\n","link":"","lat":43.22355517244211,"lon":0.09620627621291078,"icon":""}]}

 **Marron foncé:** | Tronçon modifié en 2009.

## Historique:

La voie ferrée de Toulouse à Bayonne a été créée entre 1861 et 1867 et a été électrifiée entre 1922 et 1930. La ligne à haute tension d'Ampèrevielle à Tournay a quand à elle été créée en 1914 et fut originellement exploitée en double ligne biphasée à 28 000 volts afin d'électrifier la caténaire de la voie ferrée.

Suite à la normalisation dès 1921 par l'État pour un courant continu en 1500 V, une restructuration du système de la caténaire a été réalisée en 1923 avec la réutilisation des supports d'origine pour la création d'une ligne triphasée à 60 KV.

Entre 1948 et 1949, la majorité des pylônes sont légèrement modifiés afin de placer les conducteurs sur un plan quasi-horizontal.

Comme elle permet de raccorder une partie de la voie ferrée au réseau électrique, elle suit intégralement la ligne de chemin de fer à quelques exceptions près. Entre novembre et décembre 2019, trois sections sont démontées suite à la mise hors tension de la ligne pour la mise en place des nouveaux supports caténaires. La ligne devait déjà avoir disparu depuis 2019 suite à la modernisation de la voie ferrée mais un grave accident qui s'est déroulé en 2018 au niveau de la rampe de Capvern a arrêté les travaux.

## Futur:

Modernisation des caténaires (travaux initialement prévus de 2019 à 2021). Les travaux sont arrêtés suite à un grave accident qui s'est déroulé en 2018 au niveau de la rampe de Capvern.

## Description du tracé:

* La ligne électrique débute au poste d'Ampèrevielle (poste dédié pour la SNCF) et longe la voie ferrée.
* Elle passe sur la D817 et monte une colline se séparant ainsi de la voie ferrée avant de la retrouver de l'autre côté de la colline.
* Elle se sépare de nouveau de la ligne de chemin de fer et remonte sur une autre colline avant de la retrouver sur l'autre versant.
* Après être passé au sud du lac de l'Arrêt Darré, elle se sépare de nouveau de la ligne de train et repasse sur la D817 en haut d'une nouvelle colline avant de retrouver la voie ferrée.
* La ligne passe à proximité de Bordes et se termine à Tournay au poste électrique de la SNCF.

## Continuité:

Ligne 63 KV Lourdes-Pont-des-Demoiselles.