{"id":908,"date":"2025-09-23T09:30:10","date_gmt":"2025-09-23T07:30:10","guid":{"rendered":"https:\/\/powermining.fi\/?page_id=908"},"modified":"2026-09-29T09:15:52","modified_gmt":"2026-09-29T07:15:52","slug":"rock-reinforcement","status":"publish","type":"page","link":"https:\/\/powermining.fi\/en\/palvelut\/kallion-lujitus\/","title":{"rendered":"Rock Reinforcement in Tunnel Construction"},"content":{"rendered":"

The safety and durability of a tunnel depend on the rock remaining stable after excavation. Proper rock reinforcement ensures structural safety, extends service life, and prevents rock falls <\/span>or the collapse of rock<\/span> cavities. We use industry-leading methods to ensure the safety and quality <\/span>of every project in accordance with the plans<\/span>.<\/span><\/p>\n

In infrastructure projects,<\/b> teemme kaikki lujitusty\u00f6t: pultitukset, ruiskubetonoinnit rb-robotilla tai k\u00e4sinruiskutuksena sek\u00e4 verkotukset. <\/span>In confined spaces,<\/span> we also handle work stages manually<\/span> \u2014 <\/span>including drilling, shotcreting, and mesh installation.\u00a0<\/span><\/p>\n

In mining projects,<\/b> we perform cable bolting, mesh installation, and all types of rock bolting with our own equipment.\u00a0<\/span><\/p>\n

Rock Bolting<\/span><\/h2>\n

Rock bolting is one of the most common reinforcement methods. In bolting, holes are drilled into the rock, <\/span>and ribbed steel or anchor bolts are grouted into them with cement<\/span> harjater\u00e4s- tai kiila-ankkuripultteja <\/span>sitomaan kallio louhinnan j\u00e4lkeen vahvaksi rakenteeksi. Pulttien avulla estet\u00e4\u00e4n kiven irtoaminen ja mahdollistetaan kalliomassan pitk\u00e4aikainen kest\u00e4vyys. Pultitus <\/span>Bolting is often combined <\/span>with other reinforcement solutions, such as shotcreting.<\/span><\/p>\n

Shotcreting<\/span><\/h2>\n

Shotcreting is an effective way to strengthen and protect tunnel walls and roofs. A layer of concrete sprayed onto the rock surface with compressed air prevents weathering.\u00a0\u00a0<\/span><\/p>\n

Applications: <\/span><\/h3>\n
    \n
  • Tunneleiden sein\u00e4- ja kattopintojen lujittaminen<\/span><\/li>\n
  • Penkkojen ja sein\u00e4mien turvaruiskubetonointi<\/span><\/li>\n
  • Ep\u00e4tasaisten pintojen lujittava tasoiterappaus<\/span><\/li>\n<\/ul>\n

    Mesh Reinforcement<\/span><\/h2>\n

    Safety can also be improved with mesh reinforcement, which prevents rocks and boulders from falling from tunnel walls and roofs. The steel mesh is fastened to the rock with bolts,<\/span> pinta voidaan tarvittaessa my\u00f6s ruiskubetonoida.<\/span><\/p>\n

    Applications:<\/h3>\n
      \n
    • Teiden varsilla olevat<\/span>\u00a0avoleikkaukset (est\u00e4m\u00e4\u00e4n kivien tippumista ajotielle). <\/span><\/li>\n
    • Slowing tunnel deformation in mining sites.<\/span><\/li>\n<\/ul>\n

      \"Robolt<\/p>\n

      Safety<\/span><\/h2>\n

      Kallion lujituttamisella estet\u00e4\u00e4n kivien irtoamiset ja sortumat, jolloin tunnelitiloista saadaan pitk\u00e4ik\u00e4isi\u00e4 ja k\u00e4ytt\u00e4jille turvallisua<\/span>. Laadukkaasti toteutettu lujitusty\u00f6 on keskeinen osa toiminnallista kalliotilaa sek\u00e4 turvallista kaivosymp\u00e4rist\u00f6\u00e4<\/span>.<\/span><\/p>","protected":false},"excerpt":{"rendered":"

      Mining, rock support, scaling and loading. We engage in all phases of rock construction.<\/p>","protected":false},"author":5,"featured_media":907,"parent":89,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-908","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/powermining.fi\/en\/wp-json\/wp\/v2\/pages\/908","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/powermining.fi\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/powermining.fi\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/powermining.fi\/en\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/powermining.fi\/en\/wp-json\/wp\/v2\/comments?post=908"}],"version-history":[{"count":9,"href":"https:\/\/powermining.fi\/en\/wp-json\/wp\/v2\/pages\/908\/revisions"}],"predecessor-version":[{"id":1014,"href":"https:\/\/powermining.fi\/en\/wp-json\/wp\/v2\/pages\/908\/revisions\/1014"}],"up":[{"embeddable":true,"href":"https:\/\/powermining.fi\/en\/wp-json\/wp\/v2\/pages\/89"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/powermining.fi\/en\/wp-json\/wp\/v2\/media\/907"}],"wp:attachment":[{"href":"https:\/\/powermining.fi\/en\/wp-json\/wp\/v2\/media?parent=908"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}