rock bolts dsi uses

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  • Mechanical Rock Bolts - DSI Underground

    In comparison to similar 30t rock bolts, the DSI-PEAK Bolt is shorter and uses a larger hole size to reduce back pressure on bolt thrust. The system’s 2:1 FASLOC resin provides effective mixing in up to 30mm bore holes and reliable top anchoring with reduced bolt lengths.

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  • The New DSI-PEAK Rock Bolt Challenges ... - Roof Bolts

    Geotechnical Systems - Rock and Roof Bolts. At DSI Australia, we are a leading manufacturer & supplier of specialist strata reinforcement products to the underground mining sectors. We offer a comprehensive range of rock and roof bolts as well as accessories. To learn more, please visit DSI Australia's Mining website: Rock and Roof Bolts

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  • Rock and Roof Bolts - DSI Civil

    Rock Bolt Properties - DSI USA.

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  • Rock Bolt Properties - DSI USA

    A29 (gr75 for USA) 5/8' Bolt. 5/8' Bolt. 3/4' Bolt. 7/8' Bolt. Yield Strength, min. 15,600 lbs. (69 kN) 17,000 lbs.

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  • Mechanical Rock Bolts - DSI Underground Canada

    Main Advantages. Efficient, practically proven, and reliable rock reinforcement system. Combination of an immediate point anchorage and a fully grouted rock bolt. Immediate load-bearing capacity after installation by the mechanical anchor. Fast installation and flexible postgrouting behind the working face.

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  • CT-Bolt™ Combination Rock Bolt - DSI Underground

    DSI Underground is Australia’s largest manufacturer & supplier of specialist strata reinforcement & support products to the underground coal & metalliferous mining sectors. DSI Underground is also a major exporter of these products to the Asia-Pacific Region. DSI Underground has successfully established its Mining Business Sector.

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  • Rock Bolts - Roof Bolts - Resin Anchoring - DSI ...

    Manufactured from a special hot rolled deformed bar designed by DSI Underground. This bolt features a rib pattern which actively assists with mixing the chemical anchors during installation. The deformed bar rib pattern improves load transfer properties. The rolled thread strength nominally equals the column strength of the bar.

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  • High Strength Bar - DSI Underground Australia - Rock

    Uses Cement cartridges were developed to anchor mine and tunnel rock bolts (rebar and threadbar) and to anchor steel dowels in concrete. Advantages. Convenient easy to handle cartridge form; Fast curing compared to ordinary cement grouts; Controlled setting times; No on-site mixing, just immerse in water; Thixotropic and non-shrink

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  • Cement Cartridges - DSI Underground Canada

    Domed Plates are compatible with DSI Underground Rock Bolts fitted with matching dome balls. Domed Plates are complimentary to the Dome Ball and overcome the problems of surface angularity. They allow the development of a good torque tension ratio. The Domed Plate and Dome Ball assembly provides up to 18° angle of tilt.

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  • Mechanical Rock Bolts - DSI Underground

    0.40' (10.16 mm) Thread Size (left and right) I. All Bolts. 5/8”- 11 UNC. 3/4”- 10 UNC. 7/8”-9 UNC. All dimensions in accordance with ASTM F432 & CSA M430-90 specifications. Technical Data. C1060 Steel.

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  • Mechanical Rock Bolts - DSI Underground Canada

    DYWIDAG THREADBAR Properties and Hardware Dimensions. 27th March 2018. 265.50 KB Download.

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  • Rock Bolt Properties - DSI USA

    Innovative solution using DYWIDAG Rock Bolts for cavern construction in India. At the request of Jaiprakash Industries Ltd., Delhi, DSI developed a specialized DYWIDAG Rock Bolting System that was successfully used for the construction of several hydro caverns in Northern India.

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  • Innovative solution using DYWIDAG Rock Bolts for

    0.60. Key Features. DSI Underground expansion shells hold in any rock strata which is sufficiently competent to provide an adequate anchorage. They are designed to anchor in soft ground or hard rock. In good strata, the anchorage exceeds the ultimate strength of the steel bolt. All expansion shells require a competent strata in the anchor zone.

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  • Expansion Shell ASES - DSI Underground Australia -

    The Dynamic OMEGA-BOLT ® is an evolution of the DSI Underground OMEGA-BOLT ® a high pressure inflatable friction bolt, used to secure a great variety of ground conditions, subjected to different stress conditions. All OMEGA-BOLT ® systems are based on a steel tube, longitudinally formed in its typical omega (Ω) shape and made pressure tight by welded bushings on each end.

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  • Rock Bolts & Spiles - DSI Canada

    Rock Bolts. Rock Bolts are generally formed from solid threadbar systems, i.e. bar, nut, couplers and plates. The steel threadbar is used to bond unstable rock to stable sections, beyond the face, and requires both capacity for tensile and shear loads.

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  • Dynamic OMEGA-BOLT® - DSI Underground Canada

    This approach uses rock bolts on the face to secure unstable masses of rock in position. The high tensile steel mesh is used to support the rock between the bolt positions. By strategically placing the rock bolts in low points or depressions on the rock face, the mesh can be secured around outcrops of …

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  • Rock Bolts - DYWIDAG-Systems International UK

    2018-9-21 · installation. For short term applications the bolts are generally left ungrouted. For more permanent applications or in rock in which corrosive groundwater is present, the space between the bolt and the rock can be filled with cement or resin grout. Dowels or anchor bars generally consist of deformed steel bars which are grouted into the rock.

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  • Rock Bolts & Spiles - DSI Canada

    Which rock bolt system is the best one to use depends on a variety of factors, which have to be considered in each individual case. DSI Underground has longtime experience in the development, production and supply of mechanical anchors and rock bolts.

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  • Mechanical Anchors, Resin and Rebar Rock Bolts - DSI ...

    Expansion Shell Anchors Rock Bolts with Expansion Shell. Extremely fast and easy installation. Immediate load bearing capacity in the borehole. Galvanized version available. Retensionable. Various angle compensation designs available.

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  • DYWIDAG Rock Bolts - DSI EMEA

    The Dynamic OMEGA-BOLT ® is an evolution of the DSI Underground OMEGA-BOLT ® a high pressure inflatable friction bolt, used to secure a great variety of ground conditions, subjected to different stress conditions. All OMEGA-BOLT ® systems are based on a steel tube, longitudinally formed in its typical omega (Ω) shape and made pressure tight by welded bushings on each end.

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  • Dynamic OMEGA-BOLT® - DSI Underground Canada

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  • Rock Bolt Properties - DSI Canada

    2017-8-10 · Anchors and Rock Bolts - COMBI-BOLT Combination Rock Bolt. The COMBI-BOLT is a unique combination rock bolt system. It offers the combined advantages of an immediate point anchorage and subsequently a fully grouted rock bolt. A two-step installation procedure allows fast installation and immediate anchorage, separate and independent grouting ...

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  • COMBI-BOLT Combination Rock Bolt - DSI Schaum

    DSI delivered #8 grade 75: S 520/690 N/mm² epoxy-coated GEWI® Bars from their local factory in Toughkenamon, PA. These bars were installed together with accessories such as hex nuts, eyebolts and anchor plates for use as rock anchors for stabilizing the steep slope wall above the step-street.

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  • New York Step-Street Stabilized Using GEWI ® Rock

    It consists of two resin encapsulated roof bolts, DSI THREADBAR ® #7, eight feet long, two truss couplers, installed with the bolts, two lengths of strand with wedge and barrel assemblies pre-seated on one end, a center 'dog-bone' style transition coupler, and two sets of wedges used to tension and seat the cross member after installation of ...

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  • Improved safety with DSI Trusses - DSI Underground

    Cable Bolt. 270 ksi, low relaxation cable per ASTM A416. Supplied in any length, black or galvanized cable. Point anchored active bolt, tensioned after installation utilizing the hydraulic tensioning jack. Point-anchored passive bolt with pre-seated head. Wedge barrel shaped to accept 1 …

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  • Cable Bolt - DSI Underground Canada

    Mining rock bolts Products. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including, Mining rock bolts, quarry, aggregate, and different kinds of minerals.

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  • DYWIDAG Rock Bolts - DSI EMEA

    Expansion Shell Anchors Rock Bolts with Expansion Shell. Extremely fast and easy installation. Immediate load bearing capacity in the borehole. Galvanized version available. Retensionable. Various angle compensation designs available.

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  • Mechanical Anchors, Resin and Rebar Rock Bolts - DSI ...

    Which rock bolt system is the best one to use depends on a variety of factors, which have to be considered in each individual case. DSI Underground has longtime experience in the development, production and supply of mechanical anchors and rock bolts.

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  • The Leeville Mine: DSI GRP Rock Bolts and DSI Inject ...

    The Leeville Mine: DSI GRP Rock Bolts and DSI Inject Systems ensure Safety in Aggressive Environments. The Newmont Mining Corporation was founded in 1921 in the USA and is a globally leading producer of gold and copper. Approx. 16km north-west of the town of Carlin in Nevada, the company operates the Leeville Underground Mining Complex.

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  • GRP Anchors and Rock Bolts - DSI Schaum Chemie

    GRP Anchors and Rock Bolts are used as an alternative to conventional ground control elements made of steel. Thanks to the rapid development of production technologies and a higher amount of mechanical excavation, GRP systems have gained importance in underground construction around the world. Fields of application of GRP Anchors and Rock Bolts ...

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  • THREADBAR and Rebar Bolts (SN-Anchors) - DSI

    2019-5-29 · Rebar Bolts (SN-Anchors) Field-proven bolting system. Effective and standardized installation. Embedding of the tension member in grout ensures optimal bond strength. Low sensitivity concerning the actual diameter of the borehole. ALWAGRIP special rib geometry for optimized bond strength available on request.

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  • New York Step-Street Stabilized Using GEWI ® Rock

    DSI delivered #8 grade 75: S 520/690 N/mm² epoxy-coated GEWI® Bars from their local factory in Toughkenamon, PA. These bars were installed together with accessories such as hex nuts, eyebolts and anchor plates for use as rock anchors for stabilizing the steep slope wall above the step-street.

    Get Price
  • Stabilisation Systems - DYWIDAG-Systems

    This approach uses rock bolts on the face to secure unstable masses of rock in position. The high tensile steel mesh is used to support the rock between the bolt positions. By strategically placing the rock bolts in low points or depressions on the rock face, the mesh can be secured around outcrops of …

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  • Mine Rock, Cable & Specialty Bolts BC | DSI | SPS

    Mining products from Dywidag-Systems International (DSI) have long been regarded for their quality, ease of use, and longevity. SPS Mining Supplies Ltd. in Smithers is proud to supply quality DSI drilling fluids, mine rock, cable and specialty bolts to facilitate BC …

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  • The Mandacarú Tunnel in Bahia: DYWIDAG Rock Bolts

    DSI Underground Brasil supported the owner and consulting engineers during the selection of a rock bolt system suitable for use in these conditions. To stabilize the tunnel excavation, DSI produced the necessary DYWIDAG THREADBAR Rock Bolts as well as resin cartridges and supplied them to the jobsite just-in-time.

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  • Rock Anchoring and Bolt Systems

    2020-2-29 · anchors and tensioning procedures for rock bolts are detailed in this publication. Failure to follow approved practices, may result in failure. 3. The applied safety factor for a product will depend on the degree of hazard or risk involved in the product application. This safety factor is governed by national codes, local codes

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  • GRP Anchors and Rock Bolts - DSI Schaum Chemie

    GRP Anchors and Rock Bolts are used as an alternative to conventional ground control elements made of steel. Thanks to the rapid development of production technologies and a higher amount of mechanical excavation, GRP systems have gained importance in underground construction around the world. Fields of application of GRP Anchors and Rock Bolts ...

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  • DYWIDAG Rock Bolts - DSI Middle East

    Expansion Shell Anchors Rock Bolts with Expansion Shell. Extremely fast and easy installation. Immediate load bearing capacity in the borehole. Galvanized version available. Retensionable. Various angle compensation designs available.

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  • DSI Rock Bolts stabilize Excavation in historic Mine ...

    DSI Rock Bolts stabilize Excavation in historic Mine: Rehabilitation of the Rayas Shaft. The historic town of Guanajuato is a four hours’ drive north-west of Mexico City in an area in which silver and gold have been extracted from underground mines for more than four centuries.

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  • Anchors and Rock Bolts - DSI Schaum Chemie

    2017-8-10 · Anchors and Rock Bolts - OMEGA-BOLT ® Expandable Friction Bolt The main application of the OMEGA-BOLT ® Expandable Friction Bolt is temporary rock reinforcement in Mining and Tunneling. Bonding forces between the friction bolt and the rock mass are caused by form closure and friction transfer between the borehole wall and the rock bolt which is expanded by hydraulic pressure.

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  • DYWIDAG GRP Anchors and Rock Bolts

    2013-9-17 · GRP Anchors and Rock Bolts are used as an alternative to conventional ground control elements made of steel. Thanks to the rapid development of production technologies and a higher amount of mechanical excavation, GRP systems have gained importance in underground construction around the world. Fields of application of GRP Anchors and

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  • OMEGA-BOLT® Expandable Friction Bolts - DSI

    Basic Concept The main application of the OMEGA-BOLT ® expandable friction bolt is temporary rock reinforcement for Underground applications. Bonding forces between the friction bolt and the ground are caused by form closure (mechanical interlocking) and friction transfer between the borehole wall and the bolt, which is expanded by hydraulic pressure.

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  • DYWI Inject Systems - Anchors and Rock Bolts

    2013-9-27 · Cable bolts: quick connector ®DYWI Drill Hollow Bar System or GRP hollow bars: injection adapter Injection hose Different types and dimensions available upon request Optional packer systems Targeted injection of resins DYWI® Inject SILO 8044 – Silicate Injection Resin for Anchors and Rock Bolts 8

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  • DSI Underground signs an exclusive distribution

    2016-7-2 · July 2016, DSI Underground signed an agreement to manufacture and sell patented Dynamic OMEGA-BOLT ® with Northern Mining Products (NMP) of Luleå, Sweden. In their quest for higher grade ore, underground mines around the world are going deeper and deeper, where rock mass is often highly stressed by the weight of overlaying strata and by tectonic forces.

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  • DYWI(R) Drill Hollow Bar System - DSI Underground

    2019-7-6 · Rock and Soil Nail Basic Concept Soil nailing is a construction technique generally used for the stabilization of naturally unstable slopes or securing of over-steepened existing slopes, as well as the stabilization of retaining walls or embankments. For Underground applications, soil nails are also referred to as rock nails or bolts.

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  • DYWI Drill Hollow Bar System - DYWIDAG Systems

    2019-4-30 · Uses: intermediate or granular soils, soft mudstones SPT 0-55 Thread: R51 Ø 115 mm Flat face Full face carbide for broken rock or harder ground 30° forward flush Uses: fractured ground, broken rock, medium rock UCS 80 MN/mm² Thread: R25, R32, R38 Øs 42, 51, 76, 90 mm Flat face, Tungsten Carbide button bit

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