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At King Drill and Blast Services (KDB), we provide safe, cost-efficient and Innovative blasting services to the Australian open-cut and underground mining industry. KDB can provide Total Blasting Solution which includes emulsion manufacturing, explosives supply, dangerous goods logistics, blasting design, blasting service , down the hole …
Get PriceThe C620H Jack-less blast hole drill is designed to drills holes ranging from diameter of 4-1/2 inch (114.3mm) to 6-1/2 inch (165.1mm) to a maximum depth of 118 ft (36m). The C620H is a built for high efficiency and productivity to drill in medium to hard Limestone, Dolomite quarries and Aggregate mines. View More.
Get Price2008-5-22 · DTH hammers, with the piston in the hole, tend to drill straighter holes at greater depth as compared to OTH drifters. The air-driven piston hammer causes the bit to rapidly impact the rock while the bit is slowly turned. DTH hammers are efficient in hard-rock types. With the hammer in the hole, drill-pipe vibrations are …
Get Price2019-3-12 · BLAST HOLE DRILLING SERVICES. Blast hole drilling requires considerable skill and technical competence . to ensure accurate holes that achieve an optimal distribution of explosive . energy. An effective blast delivers finer ore fragmentation, higher waste mining productivity and minimal down-stream costs …
Get Price2019-2-21 · Increase pattern sizes – increased pattern sizes means increased production utilisation. Evaluate the cost of your re-drills and the effects on production. Walking a drill for 6 hours to complete a single re-drill in the middle of a production blast may not be worth it – However, a cluster of holes at the back of a pattern …
Get Price2014-6-11 · BLAST DESIGN (Figure 8-2) Staggered pattern (Figure 8-3) Sing (Figure 8-1) Square or rectangular pattern. 114 DELAY PATTERNS ... When contemplating a change in drill hole size, compare the area of influence associated with the respective. 119 holes. Whereas a three-inch diameter hole has an area of 7.07 square inches, the six-inch diameter hole …
Get Price2014-4-2 · with an uncomplicated, first-approximation method for designing blast patterns, considering geologic structure, and to show the valid use of the technique by comparing drill and blast pattern dimensions used in the quarry with those determined by the presented method. The author visited 12 lime
Get Price2018-1-23 · Blast hole drill 1. SEMINAR ON BLAST DRILL HOLES Presented by:- PAVANKUMAR 2. WHAT IS BLAST HOLE DRILL ? It is a technique used in mining whereby a hole is drilled into the surface of the rock, packed with explosive material and detonated. 3. DESCRIPTION Blast hole drilling is most commonly used in the exploration of minerals. Blast hole …
Get Price2015-12-7 · Blasting contractors should lay out the drill pattern based on a surveyed profile of the face. At a minimum, a profile survey should be done after drilling and before loading so that the proper explosive load can be determined for each blast hole based on the survey and drill log. A best practice would be to profile both …
Get Price2019-3-12 · BLAST HOLE DRILLING SERVICES. Blast hole drilling requires considerable skill and technical competence . to ensure accurate holes that achieve an optimal distribution of explosive . energy. An effective blast delivers finer ore fragmentation, higher waste mining productivity and minimal down-stream costs …
Get PriceBlast Hole Casings Request a Quote. Custom made blast casings, with no minimum order size, makes Yazoo the clear choice for mining and blasting contractors. Water Guard Blast Hole Casings from Yazoo Mills. In the blasting and mining industries, time is never on anyone’s side. The jobs are plentiful and need done as quickly as …
Get Price2015-12-7 · Blasting contractors should lay out the drill pattern based on a surveyed profile of the face. At a minimum, a profile survey should be done after drilling and before loading so that the proper explosive load can be determined for each blast hole based on the survey and drill log. A best practice would be to profile both …
Get PriceAt King Drill and Blast Services (KDB), we provide safe, cost-efficient and Innovative blasting services to the Australian open-cut and underground mining industry. KDB can provide Total Blasting Solution which includes emulsion manufacturing, explosives supply, dangerous goods logistics, blasting design, blasting service , down the hole …
Get Price2019-11-28 · The drill bit plays an important role in the drilling process of the water well rig. The quality of a drill bit directly affects the efficiency of water well drilling and the quality of hole formation. Therefore, we need to pay attention to the choice and use of the drill bit. During the drilling process, […]
Get Price2014-4-2 · with an uncomplicated, first-approximation method for designing blast patterns, considering geologic structure, and to show the valid use of the technique by comparing drill and blast pattern dimensions used in the quarry with those determined by the presented method. The author visited 12 lime
Get Price2019-2-21 · 2. u0007For hole firing instantaneously along a row, the KS should be equal to 2; 3. u0007For holes firing on a delay, the KS should be between 1.0 and 2.0 – and typically between 1.2 and 1.8. This is because the blasting is four-dimensional, as timing is a crucial part of the design.
Get PriceA pattern of parallel blastholes is drilled into the rock face at the end of the drift. The diameter of these holes ranges from 38 to 64 mm (1.5 to 2.5 inches), but in general one or more larger-diameter uncharged holes are also drilled as part of the initial…. Read More. In coal mining: Drilling and blasting.
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Get PriceBlast Hole Casings Request a Quote. Custom made blast casings, with no minimum order size, makes Yazoo the clear choice for mining and blasting contractors. Water Guard Blast Hole Casings from Yazoo Mills. In the blasting and mining industries, time is never on anyone’s side. The jobs are plentiful and need done as quickly as …
Get Price2014-6-11 · BLAST DESIGN (Figure 8-2) Staggered pattern (Figure 8-3) Sing (Figure 8-1) Square or rectangular pattern. 114 DELAY PATTERNS ... When contemplating a change in drill hole size, compare the area of influence associated with the respective. 119 holes. Whereas a three-inch diameter hole has an area of 7.07 square inches, the six-inch diameter hole …
Get PriceThis will allow the adjustment of the pattern and even eliminate the centre hole for stopes with widths less than 1.6 m (5.2 ft). EQUIPMENT It is planned to use either an Atlas Copco Simba H-157 or a Tamrock Quasar NV. Attached Documents. Blast hole layout - narrow stope (Picture)
Get PriceBuyer is interested to receive quotations for the following RFQ - Product Name: Drilling Equipment And Tools Specifications : Type: Diamond Blades, Accessories Chisel Drill For Drill Chip Drill For Angle Grinder Chip Drill For Hole Drilling Machine Water Saws Underlying Blade Water Saws Overlying Blade Material: Stainless …
Get Price2011-9-1 · Break it Better – Mine Blast Fragmentation. Jack Eloranta of Eloranta & Associates stresses the importance of timing a blast properly. “It may take days or weeks to drill out a pattern and loading might take hours or days. But, the time span that really matters is the interval from the detonation of one hole to the time the adjacent hole …
Get Price2015-6-10 · Stemming. In this video Anthony Konya of KonyaInc.com explains stemming and stemming calculations. Stemming is a material that is put inside of a blast hole to help prevent gases from escaping. While stemming is typically put in the top of a blast hole, it can also be used to help bridge mud seams or weak layers.
Get Price2020-6-2 · Blast design. A holistic approach to the drill and blast process starts with a well-designed blast pattern, effectively executed using high-precision drills; it includes proven fragmentation analysis and blast monitoring solutions that minimise loss and dilution and delivers the data necessary for the next blast pattern design; …
Get Price2019-2-21 · 2. u0007For hole firing instantaneously along a row, the KS should be equal to 2; 3. u0007For holes firing on a delay, the KS should be between 1.0 and 2.0 – and typically between 1.2 and 1.8. This is because the blasting is four-dimensional, as timing is a crucial part of the design.
Get Price2019-1-1 · Air decking is a widely used controlled blasting technique that requires an air space in the blast hole above the explosive charge .The purpose of this air space, called a deck or air-deck, is to allow for the gases generated during the detonation process to fill the void instead of being forced into the adjacent rock mass .A …
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Get PriceThis will allow the adjustment of the pattern and even eliminate the centre hole for stopes with widths less than 1.6 m (5.2 ft). EQUIPMENT It is planned to use either an Atlas Copco Simba H-157 or a Tamrock Quasar NV. Attached Documents. Blast hole layout - narrow stope (Picture)
Get PriceDrill and blast designs are crucial for downstream mining success. Knowing how to layout and load blast holes, run blast reports, edit holes, and adjust explosive tie-ins will help you create effective designs and increase blast accuracy and blast safety. Register for Open Pit Drill and Blast to learn: Best practices for drill pattern design.
Get Price2015-6-10 · Stemming. In this video Anthony Konya of KonyaInc.com explains stemming and stemming calculations. Stemming is a material that is put inside of a blast hole to help prevent gases from escaping. While stemming is typically put in the top of a blast hole, it can also be used to help bridge mud seams or weak layers.
Get PriceHarlsan Down the Hole rods are optimised for production efficiency. The drill rods incorporate design features to maximise durability and wear resistance; and the ease of make and break operations. The engineering focus on extending drill rod life helps to lower the cost of production focused drill and blast programs.
Get PriceBlast Parameters DATA A DATA B Initiation System Burden 6.5 m Primer Code Spacing 7.0 m Description Pattern Staggered Primer Mass Bench Height 15.0 m Subdrill 2.0 m Labour Hole Angle 0.0 degrees Size of Shot Crew Drill Code DF311 Hours to load Drill Diameter 311.0 mm Number of Hole 40.0 Wet Holes 100.0 % Rock Data Wet Hole …
Get Price2020-4-22 · Blast volume (V) = B x S x BH x N Blasted tonnes (T) = 3V x Density of rock in t/m Volume of blasthole (Vb) = π x D2/4000 x L Mass of explosive per hole (kg) = Volume of hole length charged x Explosive density PF (kg/m3) = Total explosives in the blast/blast volume PF (kg/t) = Total explosives in the blast…
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Get Price2015-9-17 · Blast Pattern – The plan view of the drill holes as laid out for blasting. Blast Plan – A written procedure that details the methods and manner by which a Project blaster will comply with pertinent laws, …
Get PriceSTOPEMATE™ ROCK DRILL Rock Drill and Blast Rig Technical Overview. Open the catalog to page 1. ... POSITIONING SYSTEM A key feature of the StopeMate is the ability to drill a complete drop raise pattern from a single position, ensuring parallel holes which is a critical consideration in longhole drilling, where straight holes …
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Get PriceMinePlan Operational Engineering includes several features that integrate and streamline your drill and blast workflow. MinePlan Blast provides a rapid design utility which enables users to create and store templates, complete bootleg analysis and create safety exclusion zones for equipment and personnel based on actual terrain …
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