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  • The New DSI-PEAK Rock Bolt Challenges Conventional

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

    Anchors and rock bolts, which are commonly assigned the general term 'rock bolts', are used for rock reinforcement in Mining and Tunneling. Rock bolts limit the loosening of blocks out of the rock mass and shear displacements. Furthermore, the frictional force between individual rock layers is increased. Anchors with a variable anchor ...

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  • Mechanical Rock Bolts - DSI Underground Canada

    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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  • Kinloc - DSI Underground Australia - Rock Bolts

    Kinloc Bolts are supplied in standard packs of 150 bolts. Only DSI Underground rock bolt components should be used to enable the optimum performance of the bolt system to be obtained. DSI Underground Mining Products Division is Quality Assured to ISO 9001:2015, Registration QMS 41328. Published: January 2017 All dimensions, weights, quantities ...

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

    2019-5-29u2002·u2002Bolts increase the self-supporting ability of the ground and limit the loosening of blocks as well as shear displacements. Furthermore, the frictional force between individual ground layers is increased. Common bolt types, such as SN-Anchors or a THREADBAR, are fully grouted over the entire length and are usually installed un-tensioned.

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  • DYWIDAG GRP Anchors and Rock Bolts

    2013-9-17u2002·u2002GRP 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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  • Rock Bolts - Roof Bolts - Resin Anchoring - DSI ...

    DSI (DSI) is Australia's largest manufacturer & supplier of specialist strata reinforcement & support products to the underground coal & metalliferous mining sectors.DSI is also a major exporter of these products to the Asia-Pacific Region.

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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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  • The Rogun Dam: DSI supplies DYWIDAG Rock Bolts for the ...

    The Rogun Dam: DSI supplies DYWIDAG Rock Bolts for the World's highest Dam. The Rogun Dam is a dam under construction on the Vakhsh River in central Tajikistan. The dam is one of 10 hydroelectric projects that are planned or in operation along the river. Originally, construction work began in 1980, but was time and again delayed and stopped ...

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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.

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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.

    Get Price
  • DSI New Developments in Yieldable Rock Bolts

    2019-12-12u2002·u20021 DSI New Developments in Yieldable Rock Bolts 2012 Dynamic Ground Support Application Symposium Thursday, September 13th, 2012 Renn Oler, Engineering Director Dywidag Systems International (DSI) Underground Sys Inc.

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  • The Rogun Dam: DSI supplies DYWIDAG Rock Bolts for the ...

    The Rogun Dam: DSI supplies DYWIDAG Rock Bolts for the World's highest Dam. The Rogun Dam is a dam under construction on the Vakhsh River in central Tajikistan. The dam is one of 10 hydroelectric projects that are planned or in operation along the river. Originally, construction work began in 1980, but was time and again delayed and stopped ...

    Get Price
  • DYWIDAG GRP Anchors and Rock Bolts

    2013-9-17u2002·u2002GRP 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

    Get Price
  • Rock Anchoring and Bolt Systems

    2020-2-29u2002·u2002anchors 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.

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  • Geotechnical Systems - DSI Underground

    2019-7-6u2002·u2002DSI offers all established systems in specialized civil engineering. The product range includes ground anchors, micropiles and soil and rock bolts. GEWl® and GEWl® Plus Threadbars that are threadable along their entire lengths, tensioning bars, DYWI® Drill Hollow Bars and prestressing steel strands that are used as load-bearing tendons.

    Get Price
  • ROCK BOLTING SOLUTIONS. - Minova

    2020-11-24u2002·u2002The split bolt is made of a high strength steel and uses a spring-based design with an interference fit, creating immediate load transfer between the bolt and the rock mass once the bolt is fully inserted. PRODUCT DESCRIPTION Resin Bolts Used with Minova Lokset capsules, the bolts are inserted into the borehole after the capsule is set in place.

    Get Price
  • Ground Control Solutions for Tunneling and Mining

    2014-5-9u2002·u2002Rock Bolts Fields of Application 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.

    Get Price
  • Dywidag DYWI Drill Hollow Bar System - DSI France

    2019-4-30u2002·u2002Uses: 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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  • New York Step-Street Stabilized Using GEWI ® Rock Bolts ...

    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
  • Ground Control Solutions for Tunneling and Mining

    2014-5-9u2002·u2002Rock Bolts Fields of Application 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.

    Get Price
  • Geotechnical Systems - DSI Underground

    2019-7-6u2002·u2002DSI offers all established systems in specialized civil engineering. The product range includes ground anchors, micropiles and soil and rock bolts. GEWl® and GEWl® Plus Threadbars that are threadable along their entire lengths, tensioning bars, DYWI® Drill Hollow Bars and prestressing steel strands that are used as load-bearing tendons.

    Get Price
  • ROCK BOLTING SOLUTIONS. - Minova

    2020-11-24u2002·u2002The split bolt is made of a high strength steel and uses a spring-based design with an interference fit, creating immediate load transfer between the bolt and the rock mass once the bolt is fully inserted. PRODUCT DESCRIPTION Resin Bolts Used with Minova Lokset capsules, the bolts are inserted into the borehole after the capsule is set in place.

    Get Price
  • Dywidag DYWI Drill Hollow Bar System - DSI France

    2019-4-30u2002·u2002Uses: 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

    Get Price
  • MITTAL ENGINEERING - Suppliers of Rock Bolts

    MITTAL ENGINEERING - Suppliers of Rock Bolts. Products:-. Rock Bolts ( Roof Bolts) Roof bolting follows the principle of fastening the loose rocks near the surface to the solid rock above, by means of anchor bolts, instead of supporting it from below. Rock Bolts not only support the surface rock but also assist it to act as a load carrying element.

    Get Price
  • Solutions for Rock Bolting

    2010-5-18u2002·u2002cable and rock bolts in underground mines, our innovative solutions improve cycle times for both cable and rock bolt installation, while increasing worker safety and strata control. Tested in operational mines and exposed to the most challenging of working conditions, our solutions for grouting

    Get Price
  • A critical review on the developments of rock support ...

    2020-9-1u2002·u2002A rebar bolt is bonded to the grout/rock along its entire length, mainly through the mechanical interlock between the bolt ribs and the grout. Rebar has the advantage of high load-bearing capacity; however, it tolerates small deformations prior to failure, making it a strong but stiff rock bolt.

    Get Price
  • ROCKS AND THEIR USES - Coal Education

    2018-1-5u2002·u2002Introduce students to different types of rocks and their uses. Background Information: Rocks normally consist of several minerals, some essential, some accessory. A rock may be thought of as a 'mineral environment.' Each rock type was formed under certain specific conditions, resulting in the formation of a fairly predictable group of minerals.

    Get Price
  • What are the differences between rock dowels and rock

    In essence, rock bolts start to support the rock as soon as they are tensioned and the rock does not have time to start to move before the rock bolt becomes effective. This question is taken from book named – A Self Learning Manual – Mastering Different Fields of Civil Engineering Works (VC-Q-A-Method) by Vincent T. H. CHU.

    Get Price
  • New York Step-Street Stabilized Using GEWI ® Rock Bolts ...

    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 …

    Get Price
  • Ground Control Solutions for Tunneling and Mining

    2014-5-9u2002·u2002Rock Bolts Fields of Application 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.

    Get Price
  • Geotechnical Systems - DSI Underground

    2019-7-6u2002·u2002DSI offers all established systems in specialized civil engineering. The product range includes ground anchors, micropiles and soil and rock bolts. GEWl® and GEWl® Plus Threadbars that are threadable along their entire lengths, tensioning bars, DYWI® Drill Hollow Bars and prestressing steel strands that are used as load-bearing tendons.

    Get Price
  • ROCK BOLTING SOLUTIONS. - Minova

    2020-11-24u2002·u2002The split bolt is made of a high strength steel and uses a spring-based design with an interference fit, creating immediate load transfer between the bolt and the rock mass once the bolt is fully inserted. PRODUCT DESCRIPTION Resin Bolts Used with Minova Lokset capsules, the bolts are inserted into the borehole after the capsule is set in place.

    Get Price
  • Dywidag DYWI Drill Hollow Bar System - DSI France

    2019-4-30u2002·u2002Uses: 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

    Get Price
  • MITTAL ENGINEERING - Suppliers of Rock Bolts

    MITTAL ENGINEERING - Suppliers of Rock Bolts. Products:-. Rock Bolts ( Roof Bolts) Roof bolting follows the principle of fastening the loose rocks near the surface to the solid rock above, by means of anchor bolts, instead of supporting it from below. Rock Bolts not only support the surface rock but also assist it to act as a load carrying element.

    Get Price
  • Solutions for Rock Bolting

    2010-5-18u2002·u2002cable and rock bolts in underground mines, our innovative solutions improve cycle times for both cable and rock bolt installation, while increasing worker safety and strata control. Tested in operational mines and exposed to the most challenging of working conditions, our solutions for grouting

    Get Price
  • A critical review on the developments of rock support ...

    2020-9-1u2002·u2002A rebar bolt is bonded to the grout/rock along its entire length, mainly through the mechanical interlock between the bolt ribs and the grout. Rebar has the advantage of high load-bearing capacity; however, it tolerates small deformations prior …

    Get Price
  • ROCKS AND THEIR USES - Coal Education

    2018-1-5u2002·u2002Introduce students to different types of rocks and their uses. Background Information: Rocks normally consist of several minerals, some essential, some accessory. A rock may be thought of as a 'mineral environment.' Each rock type was formed under certain specific conditions, resulting in the formation of a fairly predictable group of minerals.

    Get Price
  • What are the differences between rock dowels and rock

    In essence, rock bolts start to support the rock as soon as they are tensioned and the rock does not have time to start to move before the rock bolt becomes effective. This question is taken from book named – A Self Learning Manual – Mastering Different Fields of Civil Engineering Works (VC-Q-A-Method) by Vincent T. H. CHU.

    Get Price
  • DSI Rock Bolt Accessories.pdf - INDEX SECTION B ROCK BOLT ...

    View DSI Rock Bolt Accessories.pdf from CIVL 4811 at TAFE NSW - Sydney Institute. INDEX SECTION B ROCK BOLT ACCESSORIES PRODUCT GROUP ROCK BOLT PLATES BUTTERFLIES DRAGONFLIES ROCK BOLT FITTINGS CABLE

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  • DSI Rock Bolt Catalogue.pdf - INDEX SECTION A ROCK AND ...

    View DSI Rock Bolt Catalogue.pdf from CIVL 4811 at TAFE NSW - Sydney Institute. INDEX SECTION A ROCK AND ROOF BOLTS PRODUCT GROUP CHEMICAL OR RESIN ANCHOR BOLTS (CEMENTITIOUS) EXPANSION SHELL

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  • Mine Rock, Cable & Specialty Bolts BC

    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 and the Yukon mines with highly reliable products.

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  • EXPANDABLE ROCK BOLT WITH INDICATOR OF CLAMPING -

    The rock bolt according to the invention which is designed for clamping in the borehole 101 of a rock massif 1 is formed in its basic design according to the FIG. 1 with a expansion body 2 whose cross section has a deformed shape, for instance a C-profile, trefoil, quatrefoil, sixfoil, star with various number of tails, teardrop etc. as it is ...

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  • DSI's development cable bolt cometh - MiningMonthly.com

    2012-2-23u2002·u2002The addition to DSI's flexibolt range comes in 3.5m, 6m and 8m bolts. It is designed to overcome installation problems – such as the location of the drill pot – associated with some of the later model bolting methods and machines. Bolts are delivered to site assembled and ready for installation. The bolt uses a HI-ten strand cable ...

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  • Insulated types of rock bolts for Varied Uses - Alibaba.com

    Check out high-strength, lightweight types of rock bolts at Alibaba.com for distinct uses. These trusty types of rock bolts are flame-retardant FRP products.

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  • Method of using a dome headed roof bolt - DSI Underground ...

    2013-3-20u2002·u2002Method for combining resin bonding and mechanical anchoring of a bolt in a rock formation: 1983-12-13: Calandra, Jr. 4410296: Rock bolt overload warning device: 1983-10-18: Unrug: 4310266: Friction rock stabilizer and method of inserting same in an earth structure bore: 1982-01-12: Malsbury et al. 4299515: Rock reinforcement system: 1981-11-10 ...

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  • Behavior of Fiber Glass Bolts, Rock Bolts and Cable Bolts ...

    2016-1-6u2002·u2002This paper experimentally compares the shear behavior of fiber glass (FG) bolt, rock bolt (steel rebar bolt) and cable bolt for the bolt contribution to bolted concrete surface shear strength, and bolt failure mode. Two double shear apparatuses of different size were used for the study. The tensile strength, the shear strength and the deformation modulus of bolt control the shear …

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  • Critical embedment length and bond strength of fully ...

    2016-10-1u2002·u2002Every rock bolt specimen is labelled with three digits after the letter B. The first digit represents the parameter of water-cement ratio, the second represents the group of the embedment length, and the third represents the sequence number of the specimen in the group. The rock bolts were tested after curing for seven to nine days. 4.1.1.

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  • An evaluation of the bond strength of multiple resin bolt ...

    function of the strength and stiffness of the bond between the bolt and the rock. In the case of resin bolts, Campbell et al (2004) assert that this bond is provided by the resin mix as, in a fully resin-bonded rock bolt, the load transfer to the bolt is dependent on the shear stress capable of being generated on the interfaces of the rock and ...

    Get Price
  • New York Step-Street Stabilized Using GEWI ® Rock Bolts ...

    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
  • Ground Control Solutions for Tunneling and Mining

    2014-5-9u2002·u2002Rock Bolts Fields of Application 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.

    Get Price
  • Geotechnical Systems - DSI Underground

    2019-7-6u2002·u2002DSI offers all established systems in specialized civil engineering. The product range includes ground anchors, micropiles and soil and rock bolts. GEWl® and GEWl® Plus Threadbars that are threadable along their entire lengths, tensioning bars, DYWI® Drill Hollow Bars and prestressing steel strands that are used as load-bearing tendons.

    Get Price
  • ROCK BOLTING SOLUTIONS. - Minova

    2020-11-24u2002·u2002The split bolt is made of a high strength steel and uses a spring-based design with an interference fit, creating immediate load transfer between the bolt and the rock mass once the bolt is fully inserted. PRODUCT DESCRIPTION Resin Bolts Used with Minova Lokset capsules, the bolts are inserted into the borehole after the capsule is set in place.

    Get Price
  • Dywidag DYWI Drill Hollow Bar System - DSI France

    2019-4-30u2002·u2002Uses: 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

    Get Price
  • MITTAL ENGINEERING - Suppliers of Rock Bolts

    MITTAL ENGINEERING - Suppliers of Rock Bolts. Products:-. Rock Bolts ( Roof Bolts) Roof bolting follows the principle of fastening the loose rocks near the surface to the solid rock above, by means of anchor bolts, instead of supporting it from below. Rock Bolts not only support the surface rock but also assist it to act as a load carrying element.

    Get Price
  • Solutions for Rock Bolting

    2010-5-18u2002·u2002cable and rock bolts in underground mines, our innovative solutions improve cycle times for both cable and rock bolt installation, while increasing worker safety and strata control. Tested in operational mines and exposed to the most challenging of working conditions, our solutions for grouting

    Get Price
  • A critical review on the developments of rock support ...

    2020-9-1u2002·u2002A rebar bolt is bonded to the grout/rock along its entire length, mainly through the mechanical interlock between the bolt ribs and the grout. Rebar has the advantage of high load-bearing capacity; however, it tolerates small deformations prior to failure, making it a strong but stiff rock bolt.

    Get Price
  • ROCKS AND THEIR USES - Coal Education

    2018-1-5u2002·u2002Introduce students to different types of rocks and their uses. Background Information: Rocks normally consist of several minerals, some essential, some accessory. A rock may be thought of as a 'mineral environment.' Each rock type was formed under certain specific conditions, resulting in the formation of a fairly predictable group of minerals.

    Get Price
  • What are the differences between rock dowels and rock

    In essence, rock bolts start to support the rock as soon as they are tensioned and the rock does not have time to start to move before the rock bolt becomes effective. This question is taken from book named – A Self Learning Manual – Mastering Different Fields of Civil Engineering Works (VC-Q-A-Method) by Vincent T. H. CHU.

    Get Price