{"id":906,"date":"2018-05-11T09:44:16","date_gmt":"2018-05-11T13:44:16","guid":{"rendered":"https:\/\/www.guides-sports-loisirs.ca\/patinoires\/?page_id=906"},"modified":"2018-06-04T12:47:15","modified_gmt":"2018-06-04T16:47:15","slug":"saturation-du-sol","status":"publish","type":"page","link":"https:\/\/www.guides-sports-loisirs.ca\/patinoires\/montage-dune-patinoire\/saturation-du-sol\/","title":{"rendered":"Saturation du sol"},"content":{"rendered":"

[vc_row row_height_percent=\u00a0\u00bb0″ override_padding=\u00a0\u00bbyes\u00a0\u00bb h_padding=\u00a0\u00bb2″ top_padding=\u00a0\u00bb2″ bottom_padding=\u00a0\u00bb2″ overlay_alpha=\u00a0\u00bb50″ gutter_size=\u00a0\u00bb3″ shift_y=\u00a0\u00bb0″][vc_column column_width_use_pixel=\u00a0\u00bbyes\u00a0\u00bb overlay_alpha=\u00a0\u00bb50″ gutter_size=\u00a0\u00bb2″ medium_width=\u00a0\u00bb0″ shift_x=\u00a0\u00bb0″ shift_y=\u00a0\u00bb0″ z_index=\u00a0\u00bb0″ width=\u00a0\u00bb1\/1″ column_width_pixel=\u00a0\u00bb800″][vc_column_text]Cette \u00e9tape est associ\u00e9e au principe d\u2019\u00e9tanch\u00e9it\u00e9. Si on n\u00e9glige cette op\u00e9ration, il s\u2019ensuivra un d\u00e9lai pouvant s\u2019\u00e9taler jusqu\u2019\u00e0 trois jours pr\u00e9c\u00e9dant l\u2019apparition de la plus fine couche de glace \u00e0 la surface de la patinoire. L\u2019eau des premiers arrosages, pourtant synchronis\u00e9s avec les premiers gels[1], va s\u2019engouffrer en grande partie dans le sol. Ce ph\u00e9nom\u00e8ne s\u2019explique par la constitution du sol m\u00eame. Celui-ci est compos\u00e9 d\u2019approximativement 50\u00a0% d\u2019air, ce qui cr\u00e9e des vides. Les cavit\u00e9s se gorgeront de l\u2019eau des premiers arrosages et la glace de surface ne fera son apparition qu\u2019une fois que le sol aura atteint son seuil de saturation d\u2019eau.<\/p>\n

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Cette op\u00e9ration comporte \u00e9galement le double avantage d\u2019acc\u00e9l\u00e9rer le processus de gel du sol. Partant des principes que l\u2019air agit comme isolant et que l\u2019eau favorise le refroidissement thermique, la substitution de la deuxi\u00e8me au premier acc\u00e9l\u00e8re la cong\u00e9lation du sol. Cette cong\u00e9lation gagne en profondeur chaque jour de gel de sorte que la fonte de la glace lors du premier redoux pourra s\u2019en trouver ralentie.<\/p>\n

Les conditions de d\u00e9part des activit\u00e9s de saturation du sol correspondent id\u00e9alement aux trois jours pr\u00e9c\u00e9dant les premiers vrais jours de gel. Ces jours propices \u00e0 la saturation comportent souvent des cycles gel-d\u00e9gel. Il est \u00e0 noter que ces conditions m\u00e9t\u00e9o rendent le sol tr\u00e8s fragile et que la circulation de v\u00e9hicules quels qu\u2019ils soient doit y \u00eatre prohib\u00e9e jusqu\u2019au gel d\u00e9finitif.<\/p>\n

Le proc\u00e9d\u00e9 fait appel \u00e0 la technique de l\u2019inondation en raison du d\u00e9bit d\u2019eau \u00e0 appliquer en quantit\u00e9 imposante. Des indices se manifesteront d\u00e8s le d\u00e9part. D\u2019abord, le d\u00e9placement de la nappe d\u2019eau sur le sol permettra de visualiser l\u2019effet des d\u00e9nivellations. Ensuite et surtout, la pr\u00e9sence de points de fuite sous la bordure exigera des correctifs imm\u00e9diats.<\/p>\n

La quantit\u00e9 d\u2019eau \u00e0 r\u00e9pandre d\u00e9pendra de la capacit\u00e9 d\u2019absorption du sol. En tenant compte que cette op\u00e9ration s\u2019\u00e9tendra sur quelques jours, il est \u00e0 pr\u00e9voir qu\u2019au fur et \u00e0 mesure de l\u2019avancement des travaux, le ph\u00e9nom\u00e8ne de stagnation de l\u2019eau en surface ira en s\u2019accentuant. Il est important d\u2019\u00eatre en mouvement constamment en cours d\u2019arrosage. Une flaque ou une mare d\u2019eau laiss\u00e9e en un endroit cherchera davantage \u00e0 \u00e9vacuer son surplus par un point de fuite qu\u2019elle aura contribu\u00e9 elle-m\u00eame \u00e0 cr\u00e9er qu\u2019\u00e0 s\u2019\u00e9taler amplement sur l\u2019ensemble de la surface. Cette op\u00e9ration devrait prendre fin au moment de la p\u00e9riode de gel initial. Les pr\u00e9visions m\u00e9t\u00e9o se faisant de plus en plus pr\u00e9cises, il est de plus en facile de faire co\u00efncider la fin de l\u2019op\u00e9ration de saturation avec le d\u00e9but de la p\u00e9riode de gel.<\/p>\n

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[1] La p\u00e9riode de gel initial qui donne le d\u00e9part des premiers arrosages de montage doit s\u2019\u00e9tendre sur trois jours cons\u00e9cutifs dont les temp\u00e9ratures maximales ne doivent pas \u00eatre sup\u00e9rieures \u00e0 \u2013 4 \u00b0C.<\/em>[\/vc_column_text][vc_empty_space empty_h=\u00a0\u00bb1″][vc_separator sep_color=\u00a0\u00bbaccent\u00a0\u00bb el_width=\u00a0\u00bb75px\u00a0\u00bb el_height=\u00a0\u00bb2px\u00a0\u00bb][vc_column_text]Vid\u00e9o\u00a0–\u00a0Types de supports et saturation du sol
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[vc_row row_height_percent=\u00a0\u00bb0″ override_padding=\u00a0\u00bbyes\u00a0\u00bb h_padding=\u00a0\u00bb2″ top_padding=\u00a0\u00bb2″ bottom_padding=\u00a0\u00bb2″ overlay_alpha=\u00a0\u00bb50″ gutter_size=\u00a0\u00bb3″ shift_y=\u00a0\u00bb0″][vc_column column_width_use_pixel=\u00a0\u00bbyes\u00a0\u00bb overlay_alpha=\u00a0\u00bb50″ gutter_size=\u00a0\u00bb2″ medium_width=\u00a0\u00bb0″ shift_x=\u00a0\u00bb0″ shift_y=\u00a0\u00bb0″ z_index=\u00a0\u00bb0″ width=\u00a0\u00bb1\/1″ column_width_pixel=\u00a0\u00bb800″][vc_column_text]Cette \u00e9tape est […]<\/p>\n","protected":false},"author":11,"featured_media":0,"parent":888,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-906","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"\nSaturation du sol - Patinoires ext\u00e9rieures<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.guides-sports-loisirs.ca\/patinoires\/montage-dune-patinoire\/saturation-du-sol\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Saturation du sol - 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