{"id":5134,"date":"2018-02-27T12:39:36","date_gmt":"2018-02-27T12:39:36","guid":{"rendered":"http:\/\/www.inacces.com\/?p=5134"},"modified":"2018-02-27T12:39:36","modified_gmt":"2018-02-27T12:39:36","slug":"bulonat-amb-resines-al-interior-mines","status":"publish","type":"post","link":"https:\/\/www.inacces.com\/ca\/bulonat-amb-resines-al-interior-mines\/","title":{"rendered":"Bulonat amb resines al interior de mines"},"content":{"rendered":"

A\u00a0Inacc\u00e9s estem especialitzats tamb\u00e9 en treballs en pedreres i a l’interior de mines. Per aix\u00f2 comptem amb un equip d’operaris especialitzats, dirigit per un enginyer t\u00e8cnic de mines, especialitzat en aquests tipus de projectes.<\/span><\/p>\n

El bulonat amb resines \u00e9s una de les t\u00e8cniques que molts dels nostres clients ens sol\u00b7liciten en aquest tipus d’\u00e0mbits. Es tracta de la col\u00b7locaci\u00f3 de bulons en barra d’acer tipus gewi, ancorats amb cartutxos de resina bicomponent, per a estabilitzaci\u00f3 o refor\u00e7 de la volta i parets laterals de la mina. Normalment\u00a0es fan servir \u00a0bulons en barra d’acer de 25 mm de di\u00e0metre, sent la longitud dels mateixos variable, en funci\u00f3 de la problem\u00e0tica a resoldre.<\/span><\/p>\n

Els cartutxos de resina es caracteritzen per tenir una redu\u00efda resist\u00e8ncia a la penetraci\u00f3, a l’enroscar el cargol d’ancoratge, i s\u00f3n idonis per a l’\u00fas amb trepants accionats per aire comprimit.<\/span><\/p>\n

Aquests elements de refor\u00e7 actius estan destinats a reaccionar davant el moviment de la massa rocosa, desenvolupar una for\u00e7a de refor\u00e7 i transferir aquesta for\u00e7a de tornada a la massa rocosa. Aix\u00f2 contraresta la for\u00e7a motriu i pot ser que s’aconsegueixi l’equilibri, si el total de la resist\u00e8ncia mobilitzada dins de massa rocosa \u00e9s almenys igual a la for\u00e7a motriu disponible. Els bulons modifiquen el comportament de la roca i dels estrats amb els principis del refor\u00e7. Els perns actuen de forma molt similar al formig\u00f3 armat amb acer.<\/span><\/p>\n

Els perns ancorats amb resina ofereixen avantatges enfront dels perns amb amarratge per fricci\u00f3 en proporcionar una major for\u00e7a d’adher\u00e8ncia en situacions on es troben roques intensament fracturades o febles. Tamb\u00e9 tenen un rendiment m\u00e9s fiable que els perns per fricci\u00f3 si estan subjectes a vibracions.<\/span><\/p>\n

Els perns ancorats amb resina proporcionen una for\u00e7a d’ancoratge per metre lineal molt m\u00e9s gran que els perns de fricci\u00f3 (split sets). Els perns de fricci\u00f3 tendeixen a fallar si estan sotmesos a cisallament.<\/span><\/p>\n

Els bulons, que millor s’adapten a aplicacions de ancorats amb resina, tenen una superf\u00edcie exterior aspra o corrugada per incrementar l’efic\u00e0cia de la uni\u00f3, la resist\u00e8ncia de fricci\u00f3, la millora de la transfer\u00e8ncia de les c\u00e0rregues i la capacitat de barreja de les resines .<\/span><\/p>\n

A l’interior de mines dels mitjans d’elevaci\u00f3 utilitzats s\u00f3n plataformes elevadores de personal, sempre el\u00e8ctriques, ja que la ventilaci\u00f3 a l’interior de la mina fa desaconsellable la utilitzaci\u00f3 de plataformes amb motor di\u00e8sel. \u00c9s important tenir en compte els nivells de gasos que hi ha a l’interior de mines per a aix\u00f2 Inacc\u00e9s compta amb mesuradors a l’efecte que tant ens indiquen el percentatge d’oxigen com de la resta de gasos que hi pugui haver. El percentatge d’oxigen no ha de ser inferior al 20,5%. Si no \u00e9s factible mantenir aquest nivell amb aportaci\u00f3 d’aire fresc, haur\u00e0 de realitzar el treball amb equips respiratoris semiaut\u00f2noms o aut\u00f2noms, segons el cas.<\/span><\/p>\n

\"\"

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

A\u00a0Inacc\u00e9s estem especialitzats tamb\u00e9 en treballs en pedreres i a l’interior de mines. Per aix\u00f2 comptem amb un equip d’operaris especialitzats, dirigit per un enginyer t\u00e8cnic de mines, especialitzat en aquests tipus de projectes. El bulonat amb resines \u00e9s una de les t\u00e8cniques que molts dels nostres clients ens sol\u00b7liciten en aquest tipus d’\u00e0mbits. Es…<\/p>\n","protected":false},"author":4,"featured_media":5126,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[42],"tags":[],"class_list":["post-5134","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sense-categoria"],"yoast_head":"\nBulonat amb resines al interior de mines - Inacces<\/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.inacces.com\/ca\/bulonat-amb-resines-al-interior-mines\/\" \/>\n<meta property=\"og:locale\" content=\"ca_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Bulonat amb resines al interior de mines - Inacces\" \/>\n<meta property=\"og:description\" content=\"A\u00a0Inacc\u00e9s estem especialitzats tamb\u00e9 en treballs en pedreres i a l’interior de mines. Per aix\u00f2 comptem amb un equip d’operaris especialitzats, dirigit per un enginyer t\u00e8cnic de mines, especialitzat en aquests tipus de projectes. El bulonat amb resines \u00e9s una de les t\u00e8cniques que molts dels nostres clients ens sol\u00b7liciten en aquest tipus d’\u00e0mbits. 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