{"id":4229,"date":"2025-11-12T08:57:30","date_gmt":"2025-11-12T07:57:30","guid":{"rendered":"https:\/\/mtps.fr\/specific-earthworks\/"},"modified":"2026-02-09T11:53:55","modified_gmt":"2026-02-09T10:53:55","slug":"specific-earthworks","status":"publish","type":"page","link":"https:\/\/mtps.fr\/en\/our-business\/activities\/specific-earthworks\/","title":{"rendered":"Specific earthworks"},"content":{"rendered":"\n
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Various excavation conditions : <\/h3>\n\n\n\n
    \n
  • rock excavation using Blasting techniques and HRB<\/li>\n\n\n\n
  • soil excavations in unstable areas<\/li>\n\n\n\n
  • excavations in confined spaces<\/li>\n\n\n\n
  • under immersion conditions<\/li>\n\n\n\n
  • tunnel excavations<\/li>\n\n\n\n
  • excavations in urban areas<\/li>\n\n\n\n
  • mountain and steep slope excavations<\/li>\n<\/ul>\n<\/div>\n\n\n\n
    \n
    \"\"
    Rock-breaking with HRB<\/figcaption><\/figure>\n<\/div><\/div>\n<\/div>\n\n
    \n
    \n

    Techniques used :<\/h3>\n\n\n\n
      \n
    • HRB<\/li>\n\n\n\n
    • blasting, with or without pre-cutting<\/li>\n\n\n\n
    • open-air blasting or tunnel blasting<\/li>\n\n\n\n
    • trench blasting<\/li>\n\n\n\n
    • excavator and dump trucks<\/li>\n\n\n\n
    • retaining sructures as work progresses<\/li>\n\n\n\n
    • prior injection<\/li>\n\n\n\n
    • prior nailing<\/li>\n\n\n\n
    • excavation using a spider excavator<\/li>\n<\/ul>\n<\/div>\n\n\n\n
      \n
      \"\"
      Excavator and dump trucks \u2013 rehabilitation of a mining site<\/figcaption><\/figure>\n<\/div><\/div>\n<\/div>\n\n

      Major earthworks<\/h2>\n\n

      2 excavation stations each with one excavator and two A25 dumpers for clearing out rubble, plus a bull and compactor for embankment works. Redevelopment of an industrial site \u2013 volume 250 000 000 m3 <\/p>\n\n

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

      Three 25-ton excavators and one 5-ton excavator<\/p>\n<\/div><\/div>\n\n

      \n

      A 30-ton excavator<\/p>\n<\/div>

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

      Open-air blasting<\/h2>\n\n
      \n
      \n
      \"\"
      Drilling on major landslide on hillside , excavator on stable ground (16-m axle offset)<\/figcaption><\/figure>\n<\/div>\n\n
      \n
      \"\"
      Blasting of a 2800 m3-unstable mass, on route des Aldudes in the Basque Country<\/figcaption><\/figure>\n<\/div><\/div>\n\n\n\n
      \n
      \"\"<\/figure>\n<\/div><\/div>\n<\/div>\n\n

      Earthworks at rocky outcrop<\/h2>\n\n
      \n
      \n
      \"\"
      After completion: optimized safety and vibility<\/figcaption><\/figure>\n<\/div><\/div>\n\n\n\n
      \n
      \"\"
      Pre-cutting of the famed \u201cRoc Vilain\u201d RD 118 (Tarn 81).\nApproximate volume 5000 m3<\/figcaption><\/figure>\n<\/div>\n\n
      \n
      \"\"
      Pre-cutting of the famed \u201cRoc Vilain\u201d RD 118 (Tarn 81).Approximate volume 5000 m3<\/figcaption><\/figure>\n<\/div><\/div>\n<\/div>\n\n

      Ground blasting and explosives<\/h2>\n\n
      \n
      \n
      \"\"
      \nComprehensive 3-D localization of the hole to verify drill locations and place the charges accordingly<\/figcaption><\/figure>\n<\/div>\n\n
      \n
      \"\"
      Transport of explosives by helicopter, here 850 kg to be detonated in a mountain area (2500 m \u2013 Pyr\u00e9n\u00e9es)<\/figcaption><\/figure>\n<\/div><\/div>\n\n\n\n
      \n
      \"\"
      Installation of vibration sensors to ensure allowed thresholds are respected<\/figcaption><\/figure>\n<\/div>\n\n
      \n
      \"\"
      Blasting to secure an old mine shaft in a high-mountain area (2500 m)<\/figcaption><\/figure>\n<\/div><\/div>\n<\/div>\n\n

      Safety Blasting<\/h2>\n\n
      \n
      \n
      \"\"
      Deepening the 7-m tunnel to install a new turbine (drilled-shaft type).<\/figcaption><\/figure>\n<\/div><\/div>\n\n\n\n
      \n
      \"\"
      CFL drilling in mine shaft to create a 20-ml deep, 3-m diameter ventilation well et de 3 m de diam\u00e8tre<\/figcaption><\/figure>\n<\/div><\/div>\n<\/div>\n\n
      \"\"<\/figure>
      \n

      Preventive explosion taking into account an EDF tunnel located less than 30 ml away, and additionnallythe work site spills into the Parc National des Pyr\u00e9n\u00e9es<\/p>\n<\/div><\/div>\n\n

      \n

      Blast in tunnel under a hydroelectric power plant. After breaking up the calotte and carrying out the blast, we remove the guards of the clamshell <\/p>\n<\/div>

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

      Controlled blasting<\/h2>\n\n
      \n
      \n
      \"\"
      T23-water drilling for stone trap in EDF tunnel<\/figcaption><\/figure>\n<\/div><\/div>\n\n\n\n
      \n
      \"\"
      Blasting for sanitation trench, we came within 0,5 m of the church wall.<\/figcaption><\/figure>\n<\/div><\/div>\n<\/div>\n\n
      \"\"<\/figure>
      \n

      Trench blasting, including in the tunnel to install sheathing and a 20000V EDF cable. Very hard granite terrain,length of trench 4,8 km<\/p>\n<\/div><\/div>\n\n

      \n

      Blasting between two houses and above a terrace to extend the back of the propertyand penetrate into the mountain<\/p>\n<\/div>

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

      Rock-breaking with HRB<\/h2>\n\n
      \n
      \n
      \"\"
      Rock being cut out after pre-cutting, 954 HD carrier \u2013 4,5-ton HRB.<\/figcaption><\/figure>\n<\/div><\/div>\n\n\n\n
      \n
      \"\"
      Rock breaking for a plunge pool using 2,5-ton HRB<\/figcaption><\/figure>\n<\/div><\/div>\n<\/div>\n\n
      \n
      \n
      \"\"
      Rock breaking in a tunnel using 300 kg- HRB\n<\/figcaption><\/figure>\n<\/div><\/div>\n\n\n\n
      \n
      \"\"
      Manual rock breaking using a hydraulic hammer then a sledgehammer then a square hammer\u2026<\/figcaption><\/figure>\n<\/div><\/div>\n<\/div>\n\n

      Small size tunnels<\/h2>\n\n
      \n
      \n
      \"\"
      Realization of a water separation network.Installing the gate system in trenches (tunnel)<\/figcaption><\/figure>\n<\/div>\n\n
      \n
      \"\"
      Cleaning out of a very small-size tunnel.\nManual cleaning-out using a home-made cart<\/figcaption><\/figure>\n<\/div><\/div>\n\n\n\n
      \n
      \"\"
      After separating the wastewater and rainwater networks reinforcement,\ninjection and drainage operations take place. Urban tunnel. <\/figcaption><\/figure>\n<\/div>\n\n
      \n
      \"\"
      Drilling prior to draining in a small-size tunnel feeding a hydroelectric power plant. (Andorre). <\/figcaption><\/figure>\n<\/div><\/div>\n<\/div>\n\n

      Large-size tunnels or galleries <\/h2>\n\n
      \n
      \n
      \"\"
      Shutting down a mine shaft \u2013 Transfer of the materials with St 2500 with bucket<\/figcaption><\/figure>\n<\/div><\/div>\n\n\n\n
      \n
      \"\"
      Shoveling materials into another gallery with St 2500 with shovel arm.<\/figcaption><\/figure>\n<\/div><\/div>\n<\/div>\n\n
      \n
      \n
      \"\"
      After consolidating the footings and reinforcing the beams, installation of piping and water-separation systems <\/figcaption><\/figure>\n<\/div><\/div>\n\n\n\n
      \n
      \"\"
      Ascending drilling using an articulated arm and a turret at 360\u00b0 in a steep descending passageway<\/figcaption><\/figure>\n<\/div><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

      Various excavation conditions : Techniques used : Major earthworks 2 excavation stations each with one excavator and two A25 dumpers for clearing out rubble, plus a bull and compactor for embankment works. Redevelopment of an industrial site \u2013 volume 250 000 000 m3 Three 25-ton excavators and one 5-ton excavator A 30-ton excavator Open-air blasting […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":4405,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-sidebar-activite.php","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-4229","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"\nSpecific earthworks - MTPS<\/title>\n<meta name=\"description\" content=\"Various excavation conditions : rock excavation using Blasting techniques and HRB soil excavations in unstable areas excavations in confined spaces under\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mtps.fr\/en\/our-business\/activities\/specific-earthworks\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Specific earthworks - 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