{"id":3969,"date":"2022-05-30T13:20:24","date_gmt":"2022-05-30T11:20:24","guid":{"rendered":"https:\/\/www.tudc.cz\/?page_id=3969"},"modified":"2024-01-02T07:58:45","modified_gmt":"2024-01-02T06:58:45","slug":"merici-vuz-gpr","status":"publish","type":"page","link":"https:\/\/www.tudc.cz\/index.php\/merici-vuz-gpr\/","title":{"rendered":"M\u011b\u0159ic\u00ed v\u016fz GPR"},"content":{"rendered":"\n

M\u011b\u0159ic\u00ed v\u016fz pro diagnostiku t\u011blesa \u017eelezni\u010dn\u00edho spodku s vyu\u017eit\u00edm georadarov\u00e9 metody.<\/p>\n\n\n\n

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Princip m\u011b\u0159en\u00ed georadarem<\/strong><\/h2>\n\n\n\n

Princip t\u00e9to metody spo\u010d\u00edv\u00e1 ve vys\u00edl\u00e1n\u00ed a p\u0159ij\u00edm\u00e1n\u00ed odra\u017een\u00fdch radarov\u00fdch vln od fyzik\u00e1ln\u00edch rozhran\u00ed, ta tvo\u0159\u00ed nap\u0159. geologick\u00e1 rozhran\u00ed, hladina podzemn\u00ed vody, podzemn\u00ed dutiny atd. Rychlost \u0161\u00ed\u0159en\u00ed elektromagnetick\u00fdch vln je d\u00e1na p\u0159edev\u0161\u00edm relativn\u00ed permitivitou prost\u0159ed\u00ed. Permitivitu zemin do vysok\u00e9 m\u00edry ovliv\u0148uje i obsah vzduchu a vody. P\u0159i zv\u00fd\u0161en\u00ed obsahu vody se permitivita prost\u0159ed\u00ed zvy\u0161uje.<\/p>\n\n\n\n

Metodika m\u011b\u0159en\u00ed georadarem<\/strong><\/h2>\n\n\n\n

M\u011b\u0159\u00edc\u00ed jednotka SIR-30 je namontov\u00e1na uvnit\u0159 m\u011b\u0159\u00edc\u00edho vozu a propojena s ant\u00e9nami, kter\u00e9 jsou osazeny pod vozem. Vz\u00e1jemn\u00fd rozestup ant\u00e9n je 90 cm a jsou zav\u011b\u0161eny 13 cm nad spojnic\u00ed temen kolejnic. M\u011b\u0159en\u00ed je prov\u00e1d\u011bno v re\u017eimu, kdy jedna ant\u00e9na slou\u017e\u00ed z\u00e1rove\u0148 jako vys\u00edla\u010d a p\u0159ij\u00edma\u010d radarov\u00e9ho vln\u011bn\u00ed a druh\u00e1 slou\u017e\u00ed pouze jako p\u0159ij\u00edma\u010d odra\u017een\u00e9ho sign\u00e1lu z ant\u00e9ny prvn\u00ed. Z\u00e1znam je tvo\u0159en jednotliv\u00fdmi stopami se vzorkovac\u00ed frekvenc\u00ed 4 stopy (z\u00e1znamy) na jeden metr. Takto po\u0159\u00edzen\u00fd z\u00e1znam umo\u017e\u0148uje zachytit poruchy o d\u00e9lce kolem 2,5 metr\u016f a v\u011bt\u0161\u00ed. Hloubkov\u00fd dosah se v z\u00e1vislosti na permitivit\u011b zemin pohybuje mezi 1,5 \u2013 2,5 m.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Georadarov\u00e1 metoda umo\u017e\u0148uje ur\u010dit<\/strong><\/h2>\n\n\n\n
    \n
  • kontinu\u00e1ln\u00ed pr\u016fb\u011bh pl\u00e1n\u011b t\u011blesa \u017eelezni\u010dn\u00edho spodku<\/li>\n\n\n\n
  • kontinu\u00e1ln\u00ed pr\u016fb\u011bh zemn\u00ed pl\u00e1n\u011b<\/li>\n\n\n\n
  • kontinu\u00e1ln\u00ed tlou\u0161\u0165ku konstruk\u010dn\u00ed vrstvy<\/li>\n\n\n\n
  • kontinu\u00e1ln\u00ed tlou\u0161\u0165ku podkladn\u00ed vrstvy<\/li>\n\n\n\n
  • probl\u00e9mov\u00e1 m\u00edsta v t\u011blese \u017eelezni\u010dn\u00edho spodku<\/li>\n\n\n\n
  • vhodn\u00e1 m\u00edsta pro um\u00edst\u011bn\u00ed sond geotechnick\u00fdch zkou\u0161ek<\/li>\n\n\n\n
  • velikost sed\u00e1n\u00ed vrstev v t\u011blese \u017eelezni\u010dn\u00edho spodku<\/li>\n\n\n\n
  • \u017eelezobetonov\u00e9 objekty a dutiny v t\u011blese \u017eelezni\u010dn\u00edho spodku<\/li>\n<\/ul>\n\n\n\n

    Z\u00e1kladn\u00ed technick\u00e9 \u00fadaje<\/strong><\/h2>\n\n\n\n
    Rychlost m\u011b\u0159en\u00ed<\/td>0 a\u017e 130 km.h-1<\/sup><\/td><\/tr>
    Hmotnost<\/td>39 t<\/td><\/tr>
    D\u00e9lka p\u0159es n\u00e1razn\u00edky<\/td>24 500 mm<\/td><\/tr>
    Maxim\u00e1ln\u00ed v\u00fd\u0161ka<\/td>4 050 mm<\/td><\/tr>
    Nejmen\u0161\u00ed polom\u011br oblouku koleje p\u0159i pr\u016fjezdu tra\u0165ovou rychlost\u00ed<\/td>150 m<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
    \"\"<\/figure>\n\n\n\n
    \"\"<\/figure>\n\n\n\n
    \"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"

    M\u011b\u0159ic\u00ed v\u016fz pro diagnostiku t\u011blesa \u017eelezni\u010dn\u00edho spodku s vyu\u017eit\u00edm georadarov\u00e9 metody. Princip m\u011b\u0159en\u00ed georadarem Princip t\u00e9to metody spo\u010d\u00edv\u00e1 ve vys\u00edl\u00e1n\u00ed a p\u0159ij\u00edm\u00e1n\u00ed odra\u017een\u00fdch radarov\u00fdch vln od fyzik\u00e1ln\u00edch rozhran\u00ed, ta tvo\u0159\u00ed nap\u0159. geologick\u00e1 rozhran\u00ed, hladina podzemn\u00ed vody, podzemn\u00ed dutiny atd. Rychlost \u0161\u00ed\u0159en\u00ed elektromagnetick\u00fdch vln je d\u00e1na p\u0159edev\u0161\u00edm relativn\u00ed permitivitou prost\u0159ed\u00ed. Permitivitu zemin do vysok\u00e9 m\u00edry ovliv\u0148uje i […]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"ngg_post_thumbnail":0,"footnotes":""},"class_list":["post-3969","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.tudc.cz\/index.php\/wp-json\/wp\/v2\/pages\/3969","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tudc.cz\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.tudc.cz\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.tudc.cz\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tudc.cz\/index.php\/wp-json\/wp\/v2\/comments?post=3969"}],"version-history":[{"count":3,"href":"https:\/\/www.tudc.cz\/index.php\/wp-json\/wp\/v2\/pages\/3969\/revisions"}],"predecessor-version":[{"id":4210,"href":"https:\/\/www.tudc.cz\/index.php\/wp-json\/wp\/v2\/pages\/3969\/revisions\/4210"}],"wp:attachment":[{"href":"https:\/\/www.tudc.cz\/index.php\/wp-json\/wp\/v2\/media?parent=3969"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}