Standard Test Method for Rock Bolt Anchor Pull Test
1.1 The objective of this test method is to measure the working and ultimate capacities of a rock bolt anchor. This method does not measure the entire roof support system. …
(PDF) Rock Bolt Anchor Pull Test Standard D 4435
Scope* 1.1 The objective of this test method is to measure the working and ultimate capacities of a rock bolt anchor.
Effect of grout properties on the pull-out load …
The patterns of failure in a pull-out test are visualized by an X-ray CT scanner to supply the basic data on the bond failure of rock bolts and cable bolts. In the pull-out test, a comparison was ...
Pull Test Kit 30 toncapacity
Rock Bolt / Soil Nail Pull Test Collar IMPORTANT - NOTE ORIENTATION OF COLLAR • The pull test kit consists of two assemblies: - a mechanical assembly which includes a claw, stand, nut, & spindle ... • When testing Split Set, Swellex, or forged …
Swellex Rock Bolts
Pull testing Swellex rock bolts is a simple process. Of all the rock bolt types, a Swellex rock bolt actually has the simplest pull test operation. Swellex Applications: Swellex rock bolts are incredibly adaptable and can be utilized for mining and tunneling, among other types of excavation. Using Swellex pattern bolts to support, reinforce, or ...
OMEGA-BOLT ® Friction Stabilizer
General Features. The DSI Underground OMEGA-BOLT ® is an expandable rock bolt with excellent elongation properties designed to accommodate ground movement. The OMEGA-BOLT ® is a folded steel tube with a welded ferrule on each end.; The OMEGA-BOLT ® lt is safe and easy to install. The OMEGA-BOLT ® is inserted into the drilled hole and inflated using high …
Mechanical properties of rock bolt and analysis for the full …
In the pull-out sliding process of rock bolt, with the increase of tensile load P 0, ... The results from pull-out test and mechanical calculation show that in the pull-process, from the application of pull-out force to the final complete sliding failure, the sliding deformation of bolt roughly experienced three stages: elastic deformation ...
Performance of the Swellex bolt in hard and soft rocks
Laboratory-scale pull-out tests of the rock bolt, installed in a thick steel tube, were performed to investigate the friction behavior between the steel tube and the smooth wall of a drilled hole ...
Rock bolting and pull out test on rebar bolts
Figure 8 – Friction anchored rock bolt. Injection of Swellex (, 2012). ... Figure 14 –The figure shows the influence of w/c ratio on the bolt pull - out testing. Maximum pull out load decreases as the w/c ratio gets higher (Kilic, Yasar and Celik, 2002).
Swellex Rock Bolts
Of all the rock bolt types, a Swellex rock bolt actually has the simplest pull test operation. Swellex Applications: Swellex rock bolts are incredibly adaptable and can be utilized for mining and …
Secoroc Rock Drilling Tools SWELLEX ROCK BOLTS
offers SwellexTM rock bolts as a unique, safe and reliable system of rock support, with the development of safer and more efficient Rock reinforcement products such as: • …
An Overview of the Use of Rockbolts as Support Tools in …
Frictional-anchored rockbolts are divided into two categories based on the mode of operation, namely: swellex bolts and split set bolts. 3.3.1 Swellex Bolts. ... Kristjánsson G (2014) Rock bolting and pull-out test on rebar bolts. Norwegian University of …
Inflatable rock bolt bond strength versus rock mass rating …
The purpose of this paper is to establish confidence in anticipated minimum bond strength for inflatable rock bolts by comparing the bond strength to variable geotechnical conditions using the rock mass rating (RMR) system. To investigate a correlation between these parameters, the minimum bond strength of pull-out tested inflatable rock bolts was compared …
IS 11309 (1985): Method of conducting pull-out test on …
method for conducting pull-out test on anchor bars and rock bolts is a full-column-grouted rock bolt or bar with cement-sand grout or resin and rock bolt is ungrouted mechanically anchored bolt. The anchorage may be of any type that is lot wedge type, expansion shell type, etc.
SWELLEX IN WEAK AND SOFT ROCK DESIGN GUIDELINES
A laboratory test has been carried out where Super Swellex rock bolts were installed in a man-made low strength material. The stress distribution, displacement and pull-out force were monitored ...
Swellex Rock Bolts, Swellex Bolts -ZongXiang
The Swellex rock bolt is made out of a welded steel tube folded on itself and sealed at one extremity, while the other extremity is set with a special head bushing used for inflation and retaining of the face plates typically used in rock bolting. ... In fact, a Swellex rock bolt has the easiest pull test operation of any rock bolt type ...
RS2 Documentation | Swellex / Split Set
The Add Pull Out Force option allows the user to simulate the effect of a pull-out test on a bolt, by applying a tensile force to the beginning of the bolt. To use this option, select the Add Pull Out …
IS 11309 (1985): Method of conducting pull-out test on …
1.1 This standard lays down the method for conducting anchor pull-out test in rock and the evaluation of bond strength between reinforcement and grout concrete or grout concrete and …
Swellex
7 Swellex rock bolts Swellex load capacity Description Minimum breaking load, expanded profile (kN) Minimum yielding load, expanded profile (kN) Minimum elongation "A5" (%) Profile diameter (mm) Material thickness (mm) Original tube diameter (mm) Injection bushing diameter (mm) Bushing head (mm) Bore hole diameter (mm) Expansion pressure (bar) Pm12 110 90 10 28 2 …
Swellex Rock Bolts, Rock Bolts-ZongXiang
The Swellex rock bolt is made out of a welded steel tube folded on itself and sealed at one extremity, while the other extremity is set with a special head bushing used for inflation and retaining of the face plates typically used in rock bolting. ... In fact, a Swellex rock bolt has the easiest pull test operation of any rock bolt type ...
SS-39 pull tester
SS-39 pull test equipment The pull tester consists of two assemblies: the hydraulic portion which includes the cylinder, gage, pump, hose and adapter; and the mechanical portion which …
ASTM D4435 Pull Out Test Rock Bolt
ASTM D4435 Pull Out Test Rock Bolt - Free download as PDF File (.pdf), Text File (.txt) or read online for free. As a reference for pull out test
Pull Out Test Apparatus for Short Term Strength
Pull Out Test Apparatus is used to measure short term strength of an installed rockbolt under field conditions. The strength is measured by a pull test, in which bolt head displacement is measured as a function of applied bolt oad to give a …
34th International Conference on Ground Control in …
Most underground mines in Nevada use Swellex-type inflatable rock bolts due to their simple and fast installation procedure. ... bolt pull-out test values measured in metric tonnes per meter and
Tension Jack/Pull Test Kit
• When testing Split Set, Swellex, or forged head bolts, the pull collar must be put onto the bolt BEFORE installation of the bolt • 30 ton units available for sale or rent • Comes complete with wooden crate ™ ™™ • Pull test collars available upon request Tension Jack/Pull Test Kit 30 ton capacity Complete Assembly
What Is a Rock Bolt? Working and Uses
This creates a robust bond that resists pull-out and lateral movement. Resin grouted bolts are particularly effective in tunneling, mining, and slope stabilization applications. Swellex Rock Bolts. Swellex rock bolts are flexible and expandable, making them ideal for unstable ground conditions, particularly in underground mining and tunneling.
Swellex spartan | Epiroc US
The Spartan has the same quality assurance a other Swellex bolt on the market.The pull test results obtained at AYMAR, S.A.U. is evidence of that. ... The efficiency, speed, economic approach using the Swellex Spartan series of rock bolts resulted in a high degree of customer satisfaction. ... Reach out to us and Epiroc representative will ...
RS3 Documentation | Swellex / Split Sets
Bolts with face plates are drawn with a small rectangular icon at the beginning of the bolt, to indicate the presence of the face plate. Add Pull Out Force. The Add Pull Out Force option allows you to simulate the effect of a pull-out test on a bolt, by applying a tensile force to the beginning of the bolt. To use this option, select the Add ...
Epiroc Swellex Brochure
Swellex ® The Swellex rockbolt is a sealed steel tube folded on itself which upon installation is expanded with high water pressure offering strong performance and interaction with rock mass, assurance of perfect installation for every bolt and quick installation. The extensive application range, speed and quality
Analysis of Inflatable Rock Bolts
type of inflatable rock bolt, called the Swellex, was in-vented in the 1980s (Wijk and Skogberg 1982). A few other types of inflatable rock bolts have appeared on the market in recent years, for example, the Omega (Player et al. 2009) and the EX300 ERB (Bjurholt 2007). Inflatable rock bolts have been used for rock support, particularly in