{"id":6797,"date":"2022-06-18T20:01:00","date_gmt":"2022-06-18T18:01:00","guid":{"rendered":"https:\/\/beta.svetkamene.eu\/?p=2534"},"modified":"2022-06-10T10:38:01","modified_gmt":"2022-06-10T08:38:01","slug":"kamen-tezeny-stejnym-zpusobem-jako-uhli-2","status":"publish","type":"post","link":"https:\/\/svetkamene.eu\/index.php\/cs\/2022\/06\/18\/kamen-tezeny-stejnym-zpusobem-jako-uhli-2\/","title":{"rendered":"K\u00c1MEN T\u011a\u017dEN\u00dd STEJN\u00ddM ZP\u016eSOBEM JAKO UHL\u00cd"},"content":{"rendered":"\n

P\u0159i hled\u00e1n\u00ed zaj\u00edmavost\u00ed na internetu jsme narazili na fotografii kamenn\u00e9ho dolu, ve kter\u00e9m neprob\u00edh\u00e1 povrchov\u00e1 t\u011b\u017eba, ale hlubinn\u00e1. V\u011bd\u011bli jsme u\u017e o jednom takov\u00e9m dole v It\u00e1lii, av\u0161ak na fotografi\u00edch byl vid\u011bt zcela jin\u00fd materi\u00e1l. Uk\u00e1zalo se, \u017ee se jedn\u00e1 o d\u016fl na ostrov\u011b Portland v ji\u017en\u00ed \u010d\u00e1sti Velk\u00e9 Brit\u00e1nie a \u017ee materi\u00e1lem, kter\u00fd se zde t\u011b\u017e\u00ed, je oolitick\u00fd v\u00e1penec.<\/strong><\/p>\n\n\n\n

<\/div>\n\n\n\n

Ostrov Portland, kter\u00fd se nach\u00e1z\u00ed v hrabstv\u00ed Dorset v Laman\u0161sk\u00e9m pr\u016flivu, m\u00e1 v\u00fdhradn\u011b v\u00e1pencov\u00e9 podlo\u017e\u00ed. Ostrov m\u011b\u0159\u00ed na d\u00e9lku 6 kilometr\u016f a na \u0161\u00ed\u0159ku m\u00e1 2,4 kilometru. A\u010dkoli je pova\u017eov\u00e1n za ostrov, je \u00fazkou \u0161\u00edj\u00ed propojen\u00fd s britskou pevninou.<\/p>\n\n\n

\n
\"T\u011b\u017eba<\/figure><\/div>\n\n\n
<\/div>\n\n\n\n

T\u011b\u017eba v\u00e1pence m\u00e1 na ostrov\u011b Portland dlouhou historii. Po\u010d\u00e1tky t\u011b\u017eby portlandsk\u00e9ho v\u00e1pence sahaj\u00ed a\u017e do starov\u011bku, kdy byl tento materi\u00e1l vyu\u017e\u00edv\u00e1n k vyrob\u011b sarkof\u00e1g\u016f. V 11. stolet\u00ed byl na Portlandu pou\u017eit jako stavebn\u00ed materi\u00e1l pro stavbu kr\u00e1lovsk\u00e9ho hradu Vil\u00e9ma II Ry\u0161av\u00e9ho. Od 14. stolet\u00ed se pou\u017e\u00edval p\u0159i stavb\u00e1ch budov v Lond\u00fdn\u011b. Dlouh\u00e1 historie t\u011b\u017eby v\u00e1pence je dnes patrn\u00e1 po cel\u00e9m ostrov\u011b ve v\u00edce ne\u017e 80 lomech, z nich\u017e n\u011bkter\u00e9 jsou st\u00e1le v provozu.<\/p>\n\n\n\n

Od roku 1930 provozuje t\u011b\u017ebu portlandsk\u00e9ho v\u00e1pence soukrom\u00e1 spole\u010dnost Albion Stone ve dvou dolech: Jordans a Bowers.<\/p>\n\n\n

\n
\"T\u011b\u017eba<\/figure><\/div>\n\n\n
<\/div>\n\n\n\n

D\u016fl Jordans funguje od konce 19. stolet\u00ed. V\u011bt\u0161ina z\u00e1sob situovan\u00fdch v ji\u017en\u00ed \u010d\u00e1sti lo\u017eiska se nach\u00e1z\u00ed na pozemc\u00edch m\u00edstn\u00edho kriketov\u00e9ho klubu a \u0161koln\u00edch tenisov\u00fdch kurt\u016f. Aby se zabr\u00e1nilo \u0161kod\u00e1m na povrchu, odehr\u00e1v\u00e1 se t\u011b\u017eba v podzem\u00ed, co\u017e je z\u00e1rove\u0148 jedin\u00fd zp\u016fsob t\u011b\u017eby, kter\u00fd je povolen m\u00edstn\u00edm geologick\u00fdm \u00fa\u0159adem.<\/p>\n\n\n\n

Severn\u00ed \u010d\u00e1st lo\u017eiska byla vyhl\u00e1\u0161ena chr\u00e1n\u011bnou oblast\u00ed, tzv. \u201em\u00edstem zvl\u00e1\u0161tn\u00edho v\u00fdzkumn\u00e9ho z\u00e1jmu\u201c, anglicky \u201eSite of Special Scientific Interest\u201c (SSSI). To znamen\u00e1, \u017ee v z\u00e1jmu ochrany \u017eivotn\u00edho prost\u0159ed\u00ed se t\u011b\u017eba mus\u00ed odehr\u00e1vat zp\u016fsobem vylu\u010duj\u00edc\u00edm zne\u010di\u0161t\u011bn\u00ed, hluk a jin\u00e9 potenci\u00e1ln\u011b \u0161kodliv\u00e9 vlivy.<\/p>\n\n\n\n

Kamenolom v Bowers je provozov\u00e1n od 18. stolet\u00ed. Rovn\u011b\u017e t\u011b\u017eba v tomto lomu prob\u00edh\u00e1 dnes ji\u017e zcela pod povrchem. Nov\u00fd d\u016fl Bowers, kter\u00fd byl otev\u0159en v roce 2015, zp\u0159\u00edstupnil pro t\u011b\u017ebu obrovsk\u00e9 z\u00e1soby, kter\u00e9 se nach\u00e1z\u00ed pod \u0161koln\u00edmi h\u0159i\u0161ti ji\u017en\u00edm a na v\u00fdchodn\u00edm sm\u011brem od p\u016fvodn\u00edho lomu Bowers.<\/p>\n\n\n\n

Zaj\u00edmavost\u00ed spojenou s kamenictv\u00edm na ostrov\u011b Portland je to, \u017ee obyvatel\u00e9 ostrova nepou\u017e\u00edvaj\u00ed pro ozna\u010den\u00ed kr\u00e1l\u00edka slovo rabbit, ale \u0159\u00edkaj\u00ed bunny, co\u017e m\u00e1 sv\u016fj prap\u016fvod ve starod\u00e1vn\u00e9 pov\u011b\u0159e roz\u0161\u00ed\u0159en\u00e9 mezi d\u011bln\u00edky v lomu, podle n\u00ed\u017e m\u011bli m\u00edt kr\u00e1l\u00edci na sv\u011bdom\u00ed nebezpe\u010dn\u00e9 skaln\u00ed sesuvy.<\/p>\n\n\n\n

<\/div>\n\n\n\n

Zdroj: Kurier kamieniarski<\/a><\/p>\n\n\n\n

Autor: Dariusz Wawrzynkiewicz   |   Publikov\u00e1no: 24. z\u00e1\u0159\u00ed 2019
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P\u0159i hled\u00e1n\u00ed zaj\u00edmavost\u00ed na internetu jsme narazili na fotografii kamenn\u00e9ho dolu, ve kter\u00e9m neprob\u00edh\u00e1 povrchov\u00e1…<\/p>\n","protected":false},"author":16,"featured_media":2535,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0},"categories":[372],"tags":[],"yoast_head":"\nK\u00c1MEN T\u011a\u017dEN\u00dd STEJN\u00ddM ZP\u016eSOBEM JAKO UHL\u00cd - Sv\u011bt Kamene<\/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.kurierkamieniarski.pl\/artykuly\/o-kamieniu\/1108-kamie-wydobywany-jak-wgiel.html\" \/>\n<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"K\u00c1MEN T\u011a\u017dEN\u00dd STEJN\u00ddM ZP\u016eSOBEM JAKO UHL\u00cd - Sv\u011bt Kamene\" \/>\n<meta property=\"og:description\" content=\"P\u0159i hled\u00e1n\u00ed zaj\u00edmavost\u00ed na internetu jsme narazili na fotografii kamenn\u00e9ho dolu, ve kter\u00e9m neprob\u00edh\u00e1 povrchov\u00e1...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.kurierkamieniarski.pl\/artykuly\/o-kamieniu\/1108-kamie-wydobywany-jak-wgiel.html\" \/>\n<meta property=\"og:site_name\" content=\"Sv\u011bt Kamene\" \/>\n<meta property=\"article:published_time\" content=\"2022-06-18T18:01:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-06-10T08:38:01+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/svetkamene.eu\/wp-content\/uploads\/2021\/01\/101zs2.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"640\" \/>\n\t<meta property=\"og:image:height\" content=\"439\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Napsal(a)\" \/>\n\t<meta name=\"twitter:data1\" content=\"Darius Wawrzynkiewicz\" \/>\n\t<meta name=\"twitter:label2\" content=\"Odhadovan\u00e1 doba \u010dten\u00ed\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minuty\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"https:\/\/svetkamene.eu\/#website\",\"url\":\"https:\/\/svetkamene.eu\/\",\"name\":\"Sv\u011bt Kamene\",\"description\":\"Port\u00e1l informuj\u00edc\u00ed o v\u0161em co souvis\u00ed s kamenem\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/svetkamene.eu\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"cs\"},{\"@type\":\"ImageObject\",\"inLanguage\":\"cs\",\"@id\":\"https:\/\/www.kurierkamieniarski.pl\/artykuly\/o-kamieniu\/1108-kamie-wydobywany-jak-wgiel.html#primaryimage\",\"url\":\"https:\/\/svetkamene.eu\/wp-content\/uploads\/2021\/01\/101zs2.jpg\",\"contentUrl\":\"https:\/\/svetkamene.eu\/wp-content\/uploads\/2021\/01\/101zs2.jpg\",\"width\":640,\"height\":439,\"caption\":\"pohled do hlubinn\u00e9ho dolu, kde se t\u011b\u017e\u00ed k\u00e1men, dlouh\u00e1 m\u00edstnost, bodov\u00e1 sv\u011btla a n\u011bkolik lid\u00ed \u0159e\u0161\u00edc\u00ed t\u011b\u017ebu\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.kurierkamieniarski.pl\/artykuly\/o-kamieniu\/1108-kamie-wydobywany-jak-wgiel.html#webpage\",\"url\":\"https:\/\/www.kurierkamieniarski.pl\/artykuly\/o-kamieniu\/1108-kamie-wydobywany-jak-wgiel.html\",\"name\":\"K\u00c1MEN T\u011a\u017dEN\u00dd STEJN\u00ddM ZP\u016eSOBEM JAKO UHL\u00cd - 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