{"id":20869,"date":"2026-07-21T09:10:00","date_gmt":"2026-07-21T06:10:00","guid":{"rendered":"https:\/\/setmakina.com\/?p=20869"},"modified":"2026-09-09T13:11:19","modified_gmt":"2026-09-09T10:11:19","slug":"forage-vs-sciage-extraction-granit","status":"publish","type":"post","link":"https:\/\/setmakina.com\/fr\/non-categorise\/forage-vs-sciage-extraction-granit\/","title":{"rendered":"Forage ou sciage pour l&#8217;extraction du granit ? Comparaison du co\u00fbt au m\u00e8tre cube"},"content":{"rendered":"\n<!-- ============================================================\n     SET MAKINA \u2014 Article FR : Forage ou sciage pour l extraction du granit\n\n     SYSTEME DE MARQUE (identique a tous les articles) :\n     - Bleu principal : #468dcb\n     - Bleu fonce     : #1a3a5c\n     - Orange CTA     : #FF6600\n     - Texte          : #2d2d2d\n     - Bordures       : #e4e8ed   |   Fond clair : #f4f8fc\n     - Police         : Open Sans (Google Fonts)\n\n     UTILISATION DANS WORDPRESS :\n     Editeur de blocs -> Ajouter un bloc (+) -> HTML personnalise\n     -> coller l integralite du contenu ci-dessous\n     ============================================================ -->\n\n<link rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\">\n<link href=\"https:\/\/fonts.googleapis.com\/css2?family=Open+Sans:wght@400;600;700&#038;display=swap\" rel=\"stylesheet\">\n\n<style>\n  \/* \u2500\u2500 All styles scoped to .sm-post to avoid theme conflicts \u2500\u2500 *\/\n\n  .sm-post *,\n  .sm-post *::before,\n  .sm-post *::after { box-sizing: border-box; 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color: #FF6600; font-weight: 700; }\n  .sm-post .sm-related li a {\n    color: #1a3a5c !important;\n    font-weight: 600;\n    border-bottom: none !important;\n  }\n  .sm-post .sm-related li a:hover { color: #468dcb !important; }\n\n  \/* \u2500\u2500 Disclaimer \u2500\u2500 *\/\n  .sm-post .sm-disclaimer {\n    font-size: 12px;\n    color: #aaa;\n    line-height: 1.6;\n    padding: 16px 0 0;\n    border-top: 1px solid #eee;\n    margin-top: 32px;\n  }\n\n  \/* \u2500\u2500 Responsive breakpoints \u2500\u2500 *\/\n  @media (max-width: 680px) {\n    .sm-post h2 { font-size: 19px; }\n    .sm-post .sm-rock-grid { grid-template-columns: 1fr; }\n    .sm-post .sm-product-grid { grid-template-columns: 1fr; }\n    .sm-post .sm-related ul { grid-template-columns: 1fr; }\n    .sm-post .sm-cta { padding: 32px 24px; }\n    .sm-post .sm-cta h3 { font-size: 18px; }\n    .sm-post .sm-factor { flex-direction: column; gap: 12px; }\n    .sm-post .sm-factor-num { width: 36px; height: 36px; }\n  }\n<\/style>\n\n<article class=\"sm-post\">\n\n  <p class=\"sm-lead\">\n    Dans l&#8217;exploitation du marbre, la question est tranch\u00e9e depuis des d\u00e9cennies&nbsp;: le sciage au fil diamant\u00e9 est la m\u00e9thode d&#8217;extraction principale presque partout. Dans le granit, la question forage ou sciage reste ouverte sur chaque nouveau projet \u2014 et se tromper peut doubler ou tripler le co\u00fbt de production de chaque m\u00e8tre cube. L&#8217;extraction par forage et le sciage au fil diamant\u00e9 sont deux m\u00e9thodes \u00e9prouv\u00e9es, mais leurs structures de co\u00fbts sont tr\u00e8s diff\u00e9rentes, et c&#8217;est la duret\u00e9 de la pierre qui d\u00e9cide laquelle porte l&#8217;\u00e9conomie du projet. Cet article compare les deux m\u00e9thodes au m\u00e8tre cube et explique dans quels cas chacune \u2014 ou une combinaison des deux \u2014 constitue le bon plan.\n  <\/p>\n\n  <div class=\"sm-takeaways\">\n    <div class=\"sm-tk-title\">\u00c0 retenir<\/div>\n    <ul>\n      <li>La duret\u00e9 du granit (6\u20137 Mohs, sous l&#8217;effet du quartz) fait du fil diamant\u00e9 le <strong>poste de consommables dominant<\/strong>&nbsp;: la consommation de fil par m\u00b2 grimpe fortement avec la duret\u00e9, alors que les co\u00fbts de forage augmentent bien plus lentement.<\/li>\n      <li>Dans les \u00e9tudes de faisabilit\u00e9 granit de Set Makina, l&#8217;extraction par forage peut se r\u00e9v\u00e9ler <strong>jusqu&#8217;\u00e0 six fois plus \u00e9conomique au m\u00e8tre cube<\/strong> que le sciage au fil dans un granit dur.<\/li>\n      <li>C&#8217;est pourquoi la plupart des carri\u00e8res de granit dans le monde extraient encore principalement par <strong>m\u00e9thodes de forage<\/strong>, en r\u00e9servant le sciage au fil \u00e0 des usages s\u00e9lectifs \u2014 l&#8217;inverse de la pratique du marbre.<\/li>\n      <li>La recherche ind\u00e9pendante aboutit \u00e0 la m\u00eame conclusion&nbsp;: l&#8217;exploitation des pierres dures s&#8217;appuie principalement sur les technologies de forage, le fil diamant\u00e9 \u00e9tant surtout adopt\u00e9 pour les coupes primaires, et une <strong>m\u00e9thode mixte<\/strong> donne souvent le meilleur rendement en blocs.<\/li>\n      <li>Les deux m\u00e9thodes surpassent nettement le tir non contr\u00f4l\u00e9 en mati\u00e8re de r\u00e9cup\u00e9ration des blocs. La question n&#8217;est pas de savoir s&#8217;il faut travailler avec pr\u00e9cision, mais quelle m\u00e9thode de pr\u00e9cision votre pierre peut supporter \u00e9conomiquement.<\/li>\n    <\/ul>\n  <\/div>\n\n  <h2><span class=\"sm-num\">01<\/span>Pourquoi marbre et granit donnent des r\u00e9ponses diff\u00e9rentes<\/h2>\n\n  <p>\n    L&#8217;\u00e9conomie de l&#8217;extraction commence par la min\u00e9ralogie. Le marbre est compos\u00e9 de calcite, \u00e0 environ 3 \u00e0 3,5 sur l&#8217;<a href=\"https:\/\/www.britannica.com\/science\/Mohs-hardness\" target=\"_blank\" rel=\"noopener noreferrer\">\u00e9chelle de duret\u00e9 de Mohs<\/a>. Le granit est une roche \u00e0 quartz et feldspath situ\u00e9e entre 6 et 7, et c&#8217;est le quartz \u2014 \u00e0 7 Mohs \u2014 que le fil diamant\u00e9 doit abraser \u00e0 chaque passage. Couper un m\u00e8tre carr\u00e9 de granit consomme plusieurs fois plus de fil diamant\u00e9 que le m\u00eame m\u00e8tre carr\u00e9 de marbre, et le fil se facture au m\u00e8tre, diamants compris.\n  <\/p>\n\n  <p>\n    Le forage se comporte autrement. Un perforateur \u00e0 percussion fracture la roche par \u00e9nergie d&#8217;impact au lieu de l&#8217;abraser&nbsp;: ses consommables \u2014 taillants, tiges et air comprim\u00e9 \u2014 voient leur co\u00fbt augmenter avec la duret\u00e9 bien plus lentement que le fil diamant\u00e9. Dans le marbre, le fil reste assez bon march\u00e9 au m\u00e8tre carr\u00e9 pour que le sciage l&#8217;emporte sur la vitesse, la qualit\u00e9 de surface et le rendement. Dans le granit, le co\u00fbt du fil au m\u00e8tre carr\u00e9 monte fortement, et l&#8217;\u00e9quilibre bascule vers le forage.\n  <\/p>\n\n  <div class=\"sm-callout\">\n    <p><strong>Le principe central&nbsp;:<\/strong> quand la duret\u00e9 de la pierre augmente, les co\u00fbts de sciage augmentent fortement tandis que les co\u00fbts de forage augmentent lentement. Le marbre se situe d&#8217;un c\u00f4t\u00e9 du point de croisement&nbsp;; le granit de l&#8217;autre.<\/p>\n    <p>Tout plan d&#8217;extraction qui ignore ce fait \u2014 par exemple un cahier des charges qui transpose la pratique du marbre sur du granit \u2014 comporte un probl\u00e8me de co\u00fbt int\u00e9gr\u00e9 avant m\u00eame le premier bloc lib\u00e9r\u00e9.<\/p>\n  <\/div>\n\n  <h2><span class=\"sm-num\">02<\/span>Forage ou sciage&nbsp;: les deux m\u00e9thodes d&#8217;extraction du granit<\/h2>\n\n  <div class=\"sm-factors\">\n\n    <div class=\"sm-factor\">\n      <div class=\"sm-factor-num\">1<\/div>\n      <div class=\"sm-factor-body\">\n        <h3>Extraction par forage et fendage<\/h3>\n        <p>\n          Des rang\u00e9es de trous rapproch\u00e9s sont for\u00e9es le long des plans de s\u00e9paration pr\u00e9vus \u2014 verticalement et horizontalement \u2014 au moyen de <a href=\"https:\/\/setmakina.com\/fr\/perforateur-pneumatique-roche\/\">perforateurs pneumatiques<\/a> ou hydrauliques. Le bloc est ensuite s\u00e9par\u00e9 le long de la ligne for\u00e9e par fendage contr\u00f4l\u00e9&nbsp;: fendeuses hydrauliques, <a href=\"https:\/\/setmakina.com\/fr\/produits\/lame-de-fendage\/\" target=\"_blank\" rel=\"noopener\">coins et contre-coins<\/a>, mortier expansif, ou cordeau d\u00e9tonant soigneusement dos\u00e9 (fendage dynamique).\n        <\/p>\n        <p>\n          La m\u00e9thode exige un parc de foreuses, un compresseur et une maille de forage rigoureuse, et elle produit une surface de s\u00e9paration l\u00e9g\u00e8rement plus rugueuse qu&#8217;une coupe au fil.\n        <\/p>\n      <\/div>\n    <\/div>\n\n    <div class=\"sm-factor\">\n      <div class=\"sm-factor-num\">2<\/div>\n      <div class=\"sm-factor-body\">\n        <h3>Sciage au fil diamant\u00e9<\/h3>\n        <p>\n          Une boucle de fil diamant\u00e9 est enfil\u00e9e \u00e0 travers deux trous for\u00e9s s\u00e9cants, puis traverse la roche sous l&#8217;action d&#8217;une <a href=\"https:\/\/setmakina.com\/fr\/expertise-technique\/scie-a-fil-sur-rails-vs-portique\/\" target=\"_blank\" rel=\"noopener\">scie \u00e0 fil sur rails<\/a> qui recule le long de ses rails. La surface obtenue est lisse et pr\u00e9cise, la perte de mati\u00e8re au trait de coupe est minime, et la g\u00e9om\u00e9trie est exactement ma\u00eetris\u00e9e.\n        <\/p>\n        <p>\n          Le poste de co\u00fbt dominant est le fil lui-m\u00eame, dont la consommation au m\u00e8tre carr\u00e9 d\u00e9pend fortement de la pierre \u2014 et du respect de la bonne <a href=\"https:\/\/setmakina.com\/fr\/expertise-technique\/vitesse-coupe-fil-diamante-granit\/\" target=\"_blank\" rel=\"noopener\">vitesse de coupe pour le granit<\/a>, g\u00e9n\u00e9ralement 25 \u00e0 40 m\/s avec r\u00e9gulation variable.\n        <\/p>\n      <\/div>\n    <\/div>\n\n  <\/div>\n\n  <p>\n    Notez que m\u00eame un plan \u00ab&nbsp;tout sciage&nbsp;\u00bb suppose du forage&nbsp;: chaque coupe au fil part de trous d&#8217;enfilage for\u00e9s. La vraie question est de savoir quelle m\u00e9thode r\u00e9alise le travail principal de s\u00e9paration, m\u00e8tre cube apr\u00e8s m\u00e8tre cube.\n  <\/p>\n\n  <h2><span class=\"sm-num\">03<\/span>Co\u00fbt au m\u00e8tre cube&nbsp;: o\u00f9 part l&#8217;argent<\/h2>\n\n  <p>\n    Le tableau ci-dessous compare les deux m\u00e9thodes sur les postes de co\u00fbt qui d\u00e9terminent le prix de revient d&#8217;une exploitation de granit. Dans les \u00e9tudes de faisabilit\u00e9 modulaires de Set Makina pour carri\u00e8res de granit, les totaux favorisent syst\u00e9matiquement le forage pour le travail principal de s\u00e9paration en granit dur \u2014 dans un rapport qui peut atteindre <strong>six pour un au m\u00e8tre cube<\/strong> dans une pierre riche en quartz.\n  <\/p>\n\n  <div class=\"sm-table-wrap\">\n    <table>\n      <thead>\n        <tr>\n          <th>Poste de co\u00fbt<\/th>\n          <th>Extraction par forage<\/th>\n          <th>Sciage au fil diamant\u00e9<\/th>\n        <\/tr>\n      <\/thead>\n      <tbody>\n        <tr>\n          <td>Consommable principal<\/td>\n          <td>Taillants et tiges \u2014 co\u00fbt peu sensible \u00e0 la duret\u00e9<\/td>\n          <td>Fil diamant\u00e9 \u2014 co\u00fbt tr\u00e8s sensible \u00e0 la duret\u00e9 et \u00e0 la teneur en quartz<\/td>\n        <\/tr>\n        <tr>\n          <td>\u00c9nergie<\/td>\n          <td>Air comprim\u00e9 ou puissance hydraulique pour le parc de foreuses<\/td>\n          <td>Entra\u00eenement \u00e9lectrique 50\u2013100 HP en marche continue pendant des heures<\/td>\n        <\/tr>\n        <tr>\n          <td>Sensibilit\u00e9 \u00e0 la duret\u00e9<\/td>\n          <td>Faible<\/td>\n          <td>\u00c9lev\u00e9e \u2014 la faiblesse d\u00e9terminante sur le granit<\/td>\n        <\/tr>\n        <tr>\n          <td>Qualit\u00e9 de surface<\/td>\n          <td>Surface de fendage rugueuse le long de la ligne for\u00e9e<\/td>\n          <td>Surface sci\u00e9e lisse et pr\u00e9cise<\/td>\n        <\/tr>\n        <tr>\n          <td>Ma\u00eetrise de la g\u00e9om\u00e9trie<\/td>\n          <td>Bonne, avec un espacement et un alignement rigoureux des trous<\/td>\n          <td>Excellente \u2014 plans exacts<\/td>\n        <\/tr>\n        <tr>\n          <td>R\u00e9cup\u00e9ration des blocs vs tir<\/td>\n          <td>\u00c9lev\u00e9e \u2014 s\u00e9paration contr\u00f4l\u00e9e, faibles vibrations<\/td>\n          <td>\u00c9lev\u00e9e \u2014 aucun choc, microfissuration minimale<\/td>\n        <\/tr>\n        <tr>\n          <td>R\u00f4le courant en granit dur<\/td>\n          <td>M\u00e9thode principale de s\u00e9paration pour le volume de production<\/td>\n          <td>Usage s\u00e9lectif&nbsp;: coupes primaires, faces exactes, zones d\u00e9licates<\/td>\n        <\/tr>\n      <\/tbody>\n    <\/table>\n  <\/div>\n\n  <p>\n    Cette r\u00e9partition des r\u00f4les n&#8217;est pas seulement la conclusion de terrain de Set Makina. Une <a href=\"https:\/\/www.researchgate.net\/publication\/283325491_Quarrying_by_explosive_and_diamond_wire_in_hard_dimension_stones\" target=\"_blank\" rel=\"noopener noreferrer\">\u00e9tude sur l&#8217;exploitation des pierres de taille dures en Italie<\/a> observe que la d\u00e9coupe dans les carri\u00e8res de granit s&#8217;appuie principalement sur des technologies de forage, le fil diamant\u00e9 \u00e9tant surtout adopt\u00e9 pour les coupes primaires \u2014 et conclut que l&#8217;usage mixte du fendage dynamique et du fil diamant\u00e9 offre le meilleur rendement en blocs avec le moins de d\u00e9chets. Autrement dit, la r\u00e9gion d&#8217;exploitation de pierre dure la plus exp\u00e9riment\u00e9e au monde est parvenue \u00e0 la m\u00eame division du travail que celle pr\u00e9dite par le tableau de co\u00fbts.\n  <\/p>\n\n  <div class=\"sm-callout sm-callout-warn\">\n    <p><strong>Une pr\u00e9cision sur le tir&nbsp;:<\/strong> cette comparaison oppose deux m\u00e9thodes pr\u00e9cises et contr\u00f4l\u00e9es. Le tir non ma\u00eetris\u00e9 rel\u00e8ve d&#8217;une tout autre question \u2014 des <a href=\"https:\/\/www.researchgate.net\/publication\/324132286_Comparative_analysis_of_different_techniques_used_for_dimension_stone_mining\" target=\"_blank\" rel=\"noopener noreferrer\">travaux comparatifs sur l&#8217;exploitation des pierres de taille<\/a> montrent que les m\u00e9thodes contr\u00f4l\u00e9es offrent une r\u00e9cup\u00e9ration, un chiffre d&#8217;affaires et une r\u00e9duction des d\u00e9chets nettement sup\u00e9rieurs au tir brut ou aux poudres expansives.<\/p>\n    <p>Le choix ne se pose jamais entre \u00ab&nbsp;tir bon march\u00e9&nbsp;\u00bb et \u00ab&nbsp;pr\u00e9cision co\u00fbteuse&nbsp;\u00bb&nbsp;; il porte sur la m\u00e9thode de pr\u00e9cision que l&#8217;\u00e9conomie de votre pierre peut supporter.<\/p>\n  <\/div>\n\n  <h2><span class=\"sm-num\">04<\/span>Quand le sciage au fil garde toute sa place dans le granit<\/h2>\n\n  <p>\n    Le rapport de six pour un d\u00e9crit la s\u00e9paration en masse dans un granit dur \u2014 il ne rend pas la scie \u00e0 fil obsol\u00e8te. Le sciage reste le bon outil dans le granit chaque fois que la g\u00e9om\u00e9trie et la surface comptent davantage que le co\u00fbt au m\u00e8tre cube&nbsp;:\n  <\/p>\n\n  <ul>\n    <li><strong>Les coupes primaires de gradin<\/strong> qui \u00e9tablissent la g\u00e9om\u00e9trie exacte de travail d&#8217;un nouveau gradin&nbsp;;<\/li>\n    <li><strong>La face finale du bloc<\/strong>, o\u00f9 une surface lisse et exacte augmente la valeur commerciale du bloc&nbsp;;<\/li>\n    <li><strong>Les granits plus tendres<\/strong>, \u00e0 faible teneur en quartz, o\u00f9 la consommation de fil reste mod\u00e9r\u00e9e et o\u00f9 l&#8217;\u00e9quilibre revient vers le sciage&nbsp;;<\/li>\n    <li><strong>Les zones sensibles<\/strong> o\u00f9 m\u00eame l&#8217;\u00e9nergie d&#8217;un fendage contr\u00f4l\u00e9 est ind\u00e9sirable&nbsp;: proximit\u00e9 de failles, de fractures ou de pierre \u00e0 forte valeur.<\/li>\n  <\/ul>\n\n  <p>\n    La technologie des perles compte \u00e9galement&nbsp;: des perles diamant\u00e9es fritt\u00e9es, une duret\u00e9 de liant correcte et une concentration en diamant adapt\u00e9e \u00e0 la pierre modifient sensiblement la dur\u00e9e de vie du fil dans le granit. Les travaux sur <a href=\"https:\/\/www.nature.com\/articles\/s41598-024-54625-5\" target=\"_blank\" rel=\"noopener noreferrer\">l&#8217;usure des outils diamant\u00e9s et les propri\u00e9t\u00e9s des roches<\/a> confirment \u00e0 quel point la performance de coupe d\u00e9pend de l&#8217;ad\u00e9quation entre l&#8217;outil et la roche. Nous traiterons la s\u00e9lection du fil en d\u00e9tail dans un article d\u00e9di\u00e9.\n  <\/p>\n\n  <p>\n    Une extraction de granit productive est donc g\u00e9n\u00e9ralement une <strong>op\u00e9ration combin\u00e9e<\/strong>&nbsp;: un parc de foreuses qui assure le volume, et des scies \u00e0 fil qui assurent la pr\u00e9cision. C&#8217;est exactement ainsi que sont \u00e9quip\u00e9es les exploitations priv\u00e9es de granit performantes que nous visitons \u2014 les foreuses d&#8217;abord, les scies \u00e0 fil l\u00e0 o\u00f9 elles se rentabilisent.\n  <\/p>\n\n  <div class=\"sm-callout\">\n    <p><strong>Ce que cela donne concr\u00e8tement&nbsp;:<\/strong> la liste d&#8217;\u00e9quipement de r\u00e9f\u00e9rence de Set Makina pour une carri\u00e8re de granit produisant 1 000 m\u00b3 de blocs par mois s&#8217;articule autour d&#8217;un parc de forage \u2014 foreuses \u00e0 colonne pneumatiques avec marteau fond-de-trou, machines de forage en ligne verticales et horizontales, et dix perforateurs \u00e0 main aliment\u00e9s par deux compresseurs de 20 \u00e0 25 m\u00b3\/min.<\/p>\n    <p>Les machines \u00e0 fil diamant\u00e9 de cette m\u00eame liste sont dimensionn\u00e9es par fonction, et non par habitude&nbsp;: <strong>50 \u00e0 60 HP pour les coupes primaires, 25 HP pour la division secondaire, et 15 HP pour l&#8217;\u00e9quarrissage des blocs<\/strong>. Chaque machine tire sa place du tableau de co\u00fbts ci-dessus \u2014 le parc, c&#8217;est ce tableau traduit en acier.<\/p>\n  <\/div>\n\n  <h2><span class=\"sm-num\">05<\/span>4 questions qui d\u00e9terminent votre plan d&#8217;extraction<\/h2>\n\n  <ol class=\"sm-checklist\">\n    <li>\n      <div>\n        <div class=\"sm-q-title\">Quelle est la duret\u00e9 et l&#8217;abrasivit\u00e9 r\u00e9elles de votre pierre \u2014 mesur\u00e9es, pas suppos\u00e9es&nbsp;?<\/div>\n        <p class=\"sm-q-text\">Obtenez la teneur en quartz et la duret\u00e9 \u00e0 partir de carottes avant de choisir vos \u00e9quipements. Le point de croisement entre l&#8217;\u00e9conomie du forage et celle du sciage se d\u00e9place \u00e0 chaque point de pourcentage de quartz.<\/p>\n      <\/div>\n    <\/li>\n    <li>\n      <div>\n        <div class=\"sm-q-title\">Combien co\u00fbtent r\u00e9ellement une coupe d&#8217;essai et une ligne de forage d&#8217;essai sur votre pierre&nbsp;?<\/div>\n        <p class=\"sm-q-text\">R\u00e9alisez les deux sur le gisement et mesurez&nbsp;: le fil consomm\u00e9 par m\u00b2 coup\u00e9, et les m\u00e8tres for\u00e9s plus les taillants par m\u00b2 fendu. Vos propres chiffres valent mieux que n&#8217;importe quel catalogue \u2014 notre guide sur le <a href=\"https:\/\/setmakina.com\/fr\/expertise-technique\/reduire-cout-metre-fore-carriere\/\" target=\"_blank\" rel=\"noopener\">co\u00fbt au m\u00e8tre for\u00e9<\/a> montre comment les construire.<\/p>\n      <\/div>\n    <\/li>\n    <li>\n      <div>\n        <div class=\"sm-q-title\">Votre parc de forage est-il dimensionn\u00e9 pour la production, et pas seulement pour les trous d&#8217;enfilage&nbsp;?<\/div>\n        <p class=\"sm-q-text\">Dans le granit, le forage est la m\u00e9thode de production&nbsp;: les foreuses et le compresseur qui les alimente d\u00e9terminent la production journali\u00e8re. Le sous-dimensionnement de l&#8217;alimentation en air est le goulot d&#8217;\u00e9tranglement le plus fr\u00e9quent que nous corrigeons sur le terrain.<\/p>\n      <\/div>\n    <\/li>\n    <li>\n      <div>\n        <div class=\"sm-q-title\">O\u00f9 exactement la scie \u00e0 fil va-t-elle se rentabiliser&nbsp;?<\/div>\n        <p class=\"sm-q-text\">Affectez la scie \u00e0 fil aux coupes primaires et aux faces finales d\u00e8s le premier jour, et sp\u00e9cifiez-la correctement&nbsp;: ch\u00e2ssis sur rails, vitesse variable par variateur, et fil adapt\u00e9 \u00e0 la pierre.<\/p>\n      <\/div>\n    <\/li>\n  <\/ol>\n\n  <p>\n    Set Makina \u00e9quipe les deux volets de ce plan depuis une source unique&nbsp;: perforateurs pneumatiques TIGER et unit\u00e9s <a href=\"https:\/\/setmakina.com\/fr\/produits\/tiger-smart-drill-diesel-2\/\" target=\"_blank\" rel=\"noopener\">TIGER SMART DRILL<\/a> avec compresseurs assortis pour le parc de forage, et la scie \u00e0 fil sur rails <a href=\"https:\/\/setmakina.com\/fr\/produits\/tiger-granfill-2\/\" target=\"_blank\" rel=\"noopener\">TIGER GRANFILL<\/a> avec du <a href=\"https:\/\/setmakina.com\/fr\/produits\/fil-diamante-outils\/\" target=\"_blank\" rel=\"noopener\">fil diamant\u00e9<\/a> sp\u00e9cifi\u00e9 pour le granit. Pour le volet s\u00e9lection de machine, commencez par notre guide de r\u00e9f\u00e9rence sur le <a href=\"https:\/\/setmakina.com\/fr\/expertise-technique\/scie-fil-diamante-carriere-marbre-granit\/\" target=\"_blank\" rel=\"noopener\">choix d&#8217;une scie \u00e0 fil diamant\u00e9 pour le marbre et le granit<\/a>.\n  <\/p>\n\n  <h2><span class=\"sm-num\">06<\/span>Questions fr\u00e9quentes<\/h2>\n\n  <div class=\"sm-faq\">\n\n    <div class=\"sm-faq-item\">\n      <h3>Forage ou sciage&nbsp;: quelle m\u00e9thode est la moins ch\u00e8re pour le granit&nbsp;?<\/h3>\n      <p>Pour le travail principal de s\u00e9paration en granit dur, l&#8217;extraction par forage revient g\u00e9n\u00e9ralement bien moins cher au m\u00e8tre cube \u2014 jusqu&#8217;\u00e0 six fois moins dans les \u00e9tudes de faisabilit\u00e9 de Set Makina pour du granit riche en quartz \u2014 parce que la consommation de fil diamant\u00e9 cro\u00eet fortement avec la duret\u00e9 de la pierre, alors que les consommables de forage y sont peu sensibles.<\/p>\n    <\/div>\n\n    <div class=\"sm-faq-item\">\n      <h3>Pourquoi le sciage au fil est-il la norme pour le marbre et pas pour le granit&nbsp;?<\/h3>\n      <p>Le marbre est tendre (3\u20133,5 Mohs)&nbsp;: la consommation de fil par m\u00e8tre carr\u00e9 reste faible et le sciage l&#8217;emporte sur la vitesse et la qualit\u00e9 de surface. Le quartz du granit (7 Mohs) multiplie la consommation de fil, ce qui d\u00e9place l&#8217;\u00e9conomie vers le forage pour la production en volume.<\/p>\n    <\/div>\n\n    <div class=\"sm-faq-item\">\n      <h3>Les carri\u00e8res de granit utilisent-elles les deux m\u00e9thodes ensemble&nbsp;?<\/h3>\n      <p>Les plus productives, oui. La recherche sur l&#8217;exploitation des pierres de taille dures et l&#8217;exp\u00e9rience de terrain de Set Makina convergent vers un plan combin\u00e9&nbsp;: le forage pour le volume de production, le sciage au fil pour les coupes primaires et les faces finales exactes.<\/p>\n    <\/div>\n\n    <div class=\"sm-faq-item\">\n      <h3>L&#8217;extraction par forage ab\u00eeme-t-elle les blocs&nbsp;?<\/h3>\n      <p>Pas lorsqu&#8217;elle est bien conduite. Le fendage contr\u00f4l\u00e9 le long d&#8217;une ligne de forage rigoureuse est une m\u00e9thode \u00e0 faibles vibrations offrant une r\u00e9cup\u00e9ration \u00e9lev\u00e9e&nbsp;: comme le sciage au fil, et contrairement au tir brut, elle \u00e9vite l&#8217;\u00e9nergie de choc qui propage des microfissures dans la pierre commerciale.<\/p>\n    <\/div>\n\n  <\/div>\n\n  <div class=\"sm-cta\">\n    <h3>Vous pr\u00e9parez un investissement en carri\u00e8re de granit&nbsp;?<\/h3>\n    <p>Envoyez-nous les donn\u00e9es de votre pierre et votre objectif de production. Notre \u00e9quipe d&#8217;ing\u00e9nierie pr\u00e9pare des \u00e9tudes de faisabilit\u00e9 modulaires pour les exploitations de granit&nbsp;: liste d&#8217;\u00e9quipement, consommables et co\u00fbt au m\u00e8tre cube, calcul\u00e9s \u00e0 partir de votre gisement et non de moyennes.<\/p>\n    <a href=\"https:\/\/setmakina.com\/fr\/contactez-nous\/#action\" target=\"_blank\" rel=\"noopener\">Demander une \u00e9valuation technique<\/a>\n  <\/div>\n\n  <div class=\"sm-footer-meta\">\n    <span>Revue technique&nbsp;: <span class=\"sm-author\">Adnan Sara\u00e7o\u011flu, ing\u00e9nieur des mines (MBA), fondateur de Set Makina<\/span><\/span>\n    <span style=\"color:#ddd;\"> | <\/span>\n    <span class=\"sm-cert\">\n      <svg width=\"12\" height=\"12\" viewBox=\"0 0 24 24\" fill=\"#1a3a5c\"><path d=\"M12 1L3 5v6c0 5.55 3.84 10.74 9 12 5.16-1.26 9-6.45 9-12V5l-9-4z\"\/><\/svg>\n      ISO 9001\n    <\/span>\n    <span class=\"sm-cert\">Marquage CE<\/span>\n    <span class=\"sm-cert\">Certifi\u00e9 ATEX<\/span>\n    <span class=\"sm-cert\">Depuis 1991<\/span>\n  <\/div>\n\n  <div class=\"sm-related\">\n    <div class=\"sm-related-title\">\u00c0 lire \u00e9galement<\/div>\n    <ul>\n      <li><a href=\"https:\/\/setmakina.com\/fr\/expertise-technique\/vitesse-coupe-fil-diamante-granit\/\" target=\"_blank\" rel=\"noopener\">Vitesse de coupe du fil diamant\u00e9 pour le granit<\/a><\/li>\n      <li><a href=\"https:\/\/setmakina.com\/fr\/expertise-technique\/scie-a-fil-sur-rails-vs-portique\/\" target=\"_blank\" rel=\"noopener\">Scie \u00e0 fil sur rails ou \u00e0 portique<\/a><\/li>\n      <li><a href=\"https:\/\/setmakina.com\/fr\/expertise-technique\/reduire-cout-metre-fore-carriere\/\" target=\"_blank\" rel=\"noopener\">R\u00e9duire le co\u00fbt au m\u00e8tre for\u00e9<\/a><\/li>\n      <li><a href=\"https:\/\/setmakina.com\/fr\/expertise-technique\/liste-equipement-carriere-granit\/\" target=\"_blank\" rel=\"noopener\">Liste d&#8217;\u00e9quipement pour carri\u00e8re de granit<\/a><\/li>\n      <li><a href=\"https:\/\/setmakina.com\/fr\/produits\/tiger-smart-drill-diesel-2\/\" target=\"_blank\" rel=\"noopener\">TIGER SMART DRILL<\/a><\/li>\n      <li><a href=\"https:\/\/setmakina.com\/fr\/carriere-de-granit\/\" target=\"_blank\" rel=\"noopener\">Solutions pour carri\u00e8re de granit<\/a><\/li>\n    <\/ul>\n  <\/div>\n\n  <p class=\"sm-disclaimer\">\n    Les relations de co\u00fbt pr\u00e9sent\u00e9es dans cet article refl\u00e8tent les travaux de faisabilit\u00e9 de Set Makina et la recherche publi\u00e9e sur l&#8217;exploitation en carri\u00e8re&nbsp;; les co\u00fbts r\u00e9els d\u00e9pendent des propri\u00e9t\u00e9s de la pierre, du prix de l&#8217;\u00e9nergie, de la main-d&#8217;\u0153uvre et des conditions du site. Le rapport de six pour un concerne un granit dur et riche en quartz et doit \u00eatre valid\u00e9 par des coupes et des forages d&#8217;essai sur le gisement concern\u00e9.\n  <\/p>\n\n<\/article>\n\n\n\n<p class=\"\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dans l&#8217;exploitation du marbre, la question est tranch\u00e9e depuis des d\u00e9cennies&nbsp;: le sciage au fil diamant\u00e9 est la m\u00e9thode d&#8217;extraction principale presque partout. Dans le granit, la question forage ou sciage reste ouverte sur chaque nouveau projet \u2014 et se tromper peut doubler ou tripler le co\u00fbt de production de chaque m\u00e8tre cube. L&#8217;extraction par&#8230;<\/p>\n","protected":false},"author":2,"featured_media":20880,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"nf_dc_page":"","_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":true,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[57],"tags":[],"class_list":["post-20869","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-non-categorise"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.0 (Yoast SEO v28.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Forage ou sciage pour l&#039;extraction du granit | Set Makina<\/title>\n<meta name=\"description\" content=\"Forage ou sciage au fil diamant\u00e9 pour extraire le granit ? 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