{"id":1488,"date":"2018-10-30T00:00:00","date_gmt":"2018-10-29T16:00:00","guid":{"rendered":"http:\/\/www.osaces.com\/?p=1488"},"modified":"2018-10-30T00:00:00","modified_gmt":"2018-10-29T16:00:00","slug":"youyongchiweishenmeyidingyaoyoushenshuiqu","status":"publish","type":"post","link":"http:\/\/www.osaces.com\/fr\/youyongchiweishenmeyidingyaoyoushenshuiqu\/","title":{"rendered":"Pourquoi une piscine doit-elle \u00eatre profonde ?"},"content":{"rendered":"

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Q : Pourquoi une piscine doit-elle \u00eatre profonde ?<\/span><\/strong><\/span><\/p>\n

Avant la construction de la piscine, le personnel du piscinier planifiera l'emplacement de la zone d'eau profonde, alors pourquoi est-il n\u00e9cessaire d'am\u00e9nager une zone d'eau profonde pour la piscine ?<\/span><\/p>\n

r\u00e9pondre<\/span><\/strong>En fait, qu'il s'agisse d'eau profonde ou d'eau peu profonde, la flottabilit\u00e9 est la m\u00eame lorsqu'une personne nage, la flottabilit\u00e9 ne change pas mais la tra\u00een\u00e9e diminue.
S'il est vrai que la flottabilit\u00e9 reste inchang\u00e9e, la tra\u00een\u00e9e est r\u00e9duite, en particulier parce que les vagues cr\u00e9\u00e9es par l'eau descendent jusqu'au fond de la piscine et se r\u00e9fl\u00e9chissent, cr\u00e9ant une tra\u00een\u00e9e sur la personne ; plus l'eau est profonde, moins la tra\u00een\u00e9e est r\u00e9fl\u00e9chie, et plus cela prend de temps.
Globalement, la r\u00e9sistance en natation provient de trois sources principales :<\/span><\/p>\n

<\/span>1\u3001R\u00e9sistance \u00e0 la forme<\/span>
<\/span>C'est \u00e9galement la r\u00e9sistance caus\u00e9e par la forme de la personne, c'est pourquoi la posture du corps est soulign\u00e9e dans les cours de natation, et les instructeurs demandent aux \u00e9l\u00e8ves de garder leur corps aussi plat que possible pour r\u00e9duire la surface de la section transversale, r\u00e9duisant ainsi la r\u00e9sistance de la forme.<\/span>
<\/span>Vous pouvez simplement faire une petite exp\u00e9rience : la paume perpendiculaire \u00e0 la surface de l'eau pousse l'eau vers l'avant ; la paume plate, parall\u00e8le \u00e0 la surface de l'eau, pousse l'eau vers l'avant. Il est certain que le premier effort est d\u00fb au fait que la surface de la section transversale est grande, que la forme de la r\u00e9sistance est grande et que l'on ressent donc plus d'effort.<\/span><\/span><\/p>\n

2,<\/span><\/span>r\u00e9sistance de surface<\/span>
<\/span><\/p>\n

Il s'agit d'un ph\u00e9nom\u00e8ne que la personne moyenne peut moins ressentir en raison de sa banalit\u00e9, principalement sous la forme d'une r\u00e9sistance cr\u00e9\u00e9e par le frottement entre la surface de l'objet (le nageur) et l'eau ; en g\u00e9n\u00e9ral, plus l'eau est lisse, moins il y a de r\u00e9sistance ; la personne moyenne devrait \u00eatre \u00e0 peu pr\u00e8s la m\u00eame.<\/span><\/span><\/p>\n

3\u3001R\u00e9sistance aux vagues d'eau<\/span>
<\/span><\/p>\n

Comme son nom l'indique, il s'agit de la r\u00e9sistance caus\u00e9e par les vagues d'eau aux personnes. En bref, nous regardons g\u00e9n\u00e9ralement la natation pour voir l'\u00e9claboussure, l'\u00e9claboussure est importante, la r\u00e9sistance est \u00e9galement importante, plus la vitesse est \u00e9lev\u00e9e, plus les vagues d'eau seront importantes, plus la r\u00e9sistance sera importante. C'est \u00e9galement la raison pour laquelle il est n\u00e9cessaire d'installer une piscine profonde.<\/span>
<\/span>Plus l'eau est profonde, moins la perturbation sera r\u00e9fl\u00e9chie et moins il y aura de r\u00e9sistance aux vagues. En outre, la profondeur de l'eau permet \u00e0 l'athl\u00e8te de contourner plus facilement la r\u00e9sistance des vagues en plongeant (car la r\u00e9sistance des vagues est moindre sous l'eau qu'\u00e0 la surface).<\/span><\/span><\/p>\n

C'est pourquoi les piscines standard pour les comp\u00e9titions internationales atteignent aujourd'hui le niveau de l'Union europ\u00e9enne.<\/span>3<\/span>La raison de la profondeur d'eau d'un m\u00e8tre.<\/span><\/span><\/p>\n


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<\/p>","protected":false},"excerpt":{"rendered":"

Q : Pourquoi une piscine doit-elle avoir une zone d'eau profonde ? Avant la construction d'une piscine, le personnel du piscinier pr\u00e9voit la zone d'eau profonde lors de la conception, alors pourquoi [...]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[125],"tags":[],"yoast_head":"\n\u6e38\u6cf3\u6c60\u4e3a\u4ec0\u4e48\u4e00\u5b9a\u8981\u6709\u6df1\u6c34\u533a\uff1f - \u5965\u5229\u4ed5\uff08\u5e7f\u5dde\uff09\u5eb7\u4f53\u8bbe\u5907\u6709\u9650\u516c\u53f8<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/www.osaces.com\/fr\/youyongchiweishenmeyidingyaoyoushenshuiqu\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u6e38\u6cf3\u6c60\u4e3a\u4ec0\u4e48\u4e00\u5b9a\u8981\u6709\u6df1\u6c34\u533a\uff1f - \u5965\u5229\u4ed5\uff08\u5e7f\u5dde\uff09\u5eb7\u4f53\u8bbe\u5907\u6709\u9650\u516c\u53f8\" \/>\n<meta property=\"og:description\" content=\"\u95ee\uff1a\u6e38\u6cf3\u6c60\u4e3a\u4ec0\u4e48\u4e00\u5b9a\u8981\u6709\u6df1\u6c34\u533a\uff1f \u5728\u6cf3\u6c60\u65bd\u5de5\u524d\uff0c\u6cf3\u6c60\u516c\u53f8\u7684\u4eba\u4f1a\u5728\u8bbe\u8ba1\u7684\u65f6\u5019\u63d0\u524d\u89c4\u5212\u597d\u6df1\u6c34\u533a\u7684\u4f4d\u7f6e\uff0c\u90a3\u4e48\u4e3a\u4ec0\u4e48\u8981 […]\" \/>\n<meta property=\"og:url\" content=\"http:\/\/www.osaces.com\/fr\/youyongchiweishenmeyidingyaoyoushenshuiqu\/\" \/>\n<meta property=\"og:site_name\" content=\"\u5965\u5229\u4ed5\uff08\u5e7f\u5dde\uff09\u5eb7\u4f53\u8bbe\u5907\u6709\u9650\u516c\u53f8\" \/>\n<meta property=\"article:published_time\" content=\"2018-10-29T16:00:00+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"http:\/\/www.osaces.com\/#website\",\"url\":\"http:\/\/www.osaces.com\/\",\"name\":\"\u5965\u5229\u4ed5\uff08\u5e7f\u5dde\uff09\u5eb7\u4f53\u8bbe\u5907\u6709\u9650\u516c\u53f8\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"http:\/\/www.osaces.com\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"WebPage\",\"@id\":\"http:\/\/www.osaces.com\/youyongchiweishenmeyidingyaoyoushenshuiqu\/#webpage\",\"url\":\"http:\/\/www.osaces.com\/youyongchiweishenmeyidingyaoyoushenshuiqu\/\",\"name\":\"\u6e38\u6cf3\u6c60\u4e3a\u4ec0\u4e48\u4e00\u5b9a\u8981\u6709\u6df1\u6c34\u533a\uff1f - 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