{"id":5196,"date":"2017-03-22T23:24:33","date_gmt":"2017-03-22T22:24:33","guid":{"rendered":"http:\/\/mdemierre.speleologie.ch\/?p=5196"},"modified":"2017-04-22T10:03:22","modified_gmt":"2017-04-22T09:03:22","slug":"galerie-damenee-du-barrage-de-thusy","status":"publish","type":"post","link":"https:\/\/www.techt.ch\/mdemierre\/?p=5196","title":{"rendered":"Galerie d’amen\u00e9e du barrage de Thusy"},"content":{"rendered":"

Avec les contributions de Jacques Demierre et Herv\u00e9 Kr\u00fcmmenacher.<\/p>\n

L’usine de Thusy-Hauterive \u00e9tait un ouvrage hydro\u00e9lectrique au fil de l’eau, le long de la Sarine. Le barrage \u00e0 vannes de Thusy, construit de 1898 \u00e0 1901, se situait \u00e0 l’aval du pont en pierre de Thusy. Il permettait de capter l’eau dans une galerie \u00e0 l’air libre de 383 m\u00e8tres.<\/p>\n

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Cette galerie se poursuivait par un consid\u00e9rable tunnel souterrain menant l’eau \u00e0 l’usine hydro\u00e9lectrique de Hauterive. Ce tunnel a une longueur de 9’218 m\u00e8tres avec une section utile de 15 m2 pour une hauteur moyenne de 4.55 m. Cette galerie a \u00e9t\u00e9 principalement creus\u00e9e dans la molasse, mais aussi 200 m dans le poudingue et 1250 m dans la boue glaciaire. Entre les deux extr\u00e9mit\u00e9s du tunnel, 11 fen\u00eatres ou galeries lat\u00e9rales ont servis au creusement. Quatre d’entre elles ont \u00e9t\u00e9 ensuite am\u00e9nag\u00e9es en vanne de purge. La galerie a un rev\u00eatement complet sur 3’900 m\u00e8tres et de grandes parties avec la roche \u00e0 nue. A noter encore qu’un ruisseau de surface est capt\u00e9 dans le tunnel. Ce tunnel se terminait par le b\u00e2timent de mise en charge, au d\u00e9part de deux conduites forc\u00e9es plongeant du sommet des falaises au bord de la Sarine.<\/p>\n

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Cette galerie \u00e0 \u00e9coulement libre a \u00e9t\u00e9 d\u00e9saffect\u00e9e suite \u00e0 la construction du barrage de Rossens. Une nouvelle galerie sous pression de 5 m\u00e8tres de diam\u00e8tre et de 6 kilom\u00e8tres conduit aujourd’hui toujours l’eau \u00e0 l’usine de Hauterive,  r\u00e9am\u00e9nag\u00e9e en 1948 pour turbiner les eaux du lac de la Gruy\u00e8re. La prise d’eau de Thusy a \u00e9t\u00e9 d\u00e9mont\u00e9e et son emplacement se trouve aujourd’hui submerg\u00e9 par le Lac de la Gruy\u00e8re depuis 1948.<\/p>\nngg_shortcode_2_placeholder\n

Nos photographies de cette impressionnante galerie d’amen\u00e9e, encore partiellement accessible, en mars 2017, :<\/p>\nngg_shortcode_3_placeholder\n

 <\/p>\n

R\u00e9f\u00e9rences :<\/span>
\n1) Usine de Hauterive, Bulletin technique de la Suisse romande 32, A. Waeber, 1906.<\/a>
\n2) Projet d’accumulation hydraulique de Rossens-Hauterive sur la Sarine, Bulletin technique de la Suisse romande 69, J.-F. Brutting, 1943.<\/a>
\n3) Nouvelles Etrennes Fribourgeoises, B. de Vevey, 1949-1950.<\/a><\/p>\n

Mise en garde :<\/strong><\/span> la visite de ces cavit\u00e9s n\u00e9cessitent une formation sp\u00e9cifique et un \u00e9quipement ad\u00e9quat. N’h\u00e9sitez pas \u00e0 me contacter !<\/span><\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

Avec les contributions de Jacques Demierre et Herv\u00e9 Kr\u00fcmmenacher. L’usine de Thusy-Hauterive \u00e9tait un ouvrage hydro\u00e9lectrique au fil de l’eau, le […]<\/p>\n","protected":false},"author":1,"featured_media":5209,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ngg_post_thumbnail":0,"footnotes":""},"categories":[45,8,9],"tags":[70,56,58,19,55],"class_list":["post-5196","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cavite-artificielles","category-cavites","category-exploration-fribourg","tag-fribourg","tag-gruyere","tag-speleo","tag-speleologie-2","tag-suisse"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.techt.ch\/mdemierre\/index.php?rest_route=\/wp\/v2\/posts\/5196","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.techt.ch\/mdemierre\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.techt.ch\/mdemierre\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.techt.ch\/mdemierre\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.techt.ch\/mdemierre\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5196"}],"version-history":[{"count":3,"href":"https:\/\/www.techt.ch\/mdemierre\/index.php?rest_route=\/wp\/v2\/posts\/5196\/revisions"}],"predecessor-version":[{"id":5211,"href":"https:\/\/www.techt.ch\/mdemierre\/index.php?rest_route=\/wp\/v2\/posts\/5196\/revisions\/5211"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.techt.ch\/mdemierre\/index.php?rest_route=\/wp\/v2\/media\/5209"}],"wp:attachment":[{"href":"https:\/\/www.techt.ch\/mdemierre\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5196"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.techt.ch\/mdemierre\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5196"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.techt.ch\/mdemierre\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5196"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}