Roof Span Design for Underground Stone Mines - CDC

pillars determines the mining dimensions and size of equipment that can be used. The findings of a survey of ... evaluation of the current experience with stone mine roof spans relative to international experience is .... actual heading width is shown instead of the “hydraulic radius” which is customarily used. The hydraulic...

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Block caving - Centre for Excellence in Mining Innovation

Nov 18, 2012 ... 3.1 Ground Control and Rock Mechanic Consideration in Stope Planning. 3.1.1 Subsidence; 3.1.2 Fragmentation. 3.2 Equipment. 3.2.1 Drill and Blast; 3.2.2 Load ... Several other drifts are developed for workers and equipment. ... The hydraulic radius compares the area of the cave undercut to its perimeter.

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Block caving - QueensMineDesignWiki - MineWiki, Queen's Mine ...

Apr 29, 2015 ... A large number of mines have used and are using the Laubscher caving chart that can be seen below. (thumbnail). Laubscher stability graph. The Laubscher chart gives estimates of the undercut dimensions required to induce continuous caving using the shape parameter known as hydraulic radius.

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Identification of key rock mechanics issues in deep block caving ...

Block caving is an underground mass mining method, which is used for exploiting massive mineral deposits. ..... air blasts, which can injure workers or damage mining equipment, so it has to be avoided. For this reason .... cavability as relation between the mining environment and the hydraulic radius; compare Figure 11.

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Cave mining-the state of the art - SAIMM

drilling equipment for secondary blasting, and reliable cost data have shown that competent orebodies with coarse fragmentation can be exploited by cave mining .... Figure 1-A stability diagram for various mines worldwide. HYDRAULIC. RADIUS =Area/perimeter. CROSS SECTION BLOCK 7/2. STABLE: Only local support...

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cave mining handbook - Mining and Blasting

For example, management's desire for large equipment cannot be ... changes in techniques with technical improvements in equipment and blasting techniques. ..... from block caving mines comes from the lateral extension of the cave. Where the hydraulic radius of the orebody is limited then more precision is required in...

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Alimak Production Mining, Manroc Developments Inc.

A Leader in Alimak Mining Manroc Developments Inc. is recognized as a leading Alimak Mining Contract firm, working with major mining companies around the world. We succeed through our commitment to serving ...

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Hydraulic Mining Equipment - 911 Metallurgist

Oct 19, 2017 ... Hydraulic Mining. Where it is practicable, this is the simplest and most inexpensive method of placer mining. The mechanical equipment requirements consist ... The illustration shows a section of pipe that is II feet 3 inches in diameter and made of 9/16-inch plate and the horizontal seams are all double butt...

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UNDERGROUND DESIGN AND DEFORMATION ... - Open Collections

DRAWBACKS TO THE HYDRAULIC RADIUS PARAMETER. 59. 4.4 ..... equipment now exists for accurately quantifying the magnitude of failure or slough with quick ... The evaluation of surface geometry with the hydraulic radius term, however, is simplistic and is not suitable for complex mining geometries. The hydraulic.

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Underground mining (hard rock) - Wikipedia

There are six steps in development mining: remove previously blasted material (muck out round), scaling (removing any unstable slabs of rock hanging from the roof and sidewalls to protect workers and equipment from damage), installing support or/and reinforcement using shotcrete etceteras, drill face rock, load...

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Mining equipment - HAWE Hydraulik

Mining equipment. Road_header. When faced with the ultimate limits set by machine to rock interactions your machinery should operate reliably and safely. A responsive and sturdy hydraulic control increases cutting efficiency, protects the environment and improves operator safety. Your requirements and functions.

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A fuzzy logic model to predict the out-of-seam dilution in longwall ...

Therefore, predicting and controlling of dilution are important factors for reducing mining costs. In this study, the fuzzy set theory and multiple regression models with parameters, including variation in seam thickness, dip of seam, seam thickness, depth of seam, and hydraulic radius as inputs to the models were applied to...

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Hydraulic Mining Methods

This arrangement was improved by using a radius plate. Various types of machine were .devised. t o vhich the name "giant" was ap- plied, culminating finally in the modern double ball-Fearing giant equipped with a deflector at the end of the discharge barrel. Aopli'cation. A. 2. "In hydraulic mining a jet of water issuing under...

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Construction, Mining and Utility Equipment

Construction and Mining Equipment. Electric Rope Shovels. Continuous Miners. Hydraulic excavator. Wheel loaders. Bulldozers. Motor graders. Dump trucks ... for excavating earth and burying drain and other pipes by the non-open excavation method. Shield machines. Small-diameter pipe jacking machines ("ironmole").

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Untitled - Minerals Council of Australia

Before relying on the material in any important matter, users should carefully evaluate its accuracy, currency, completeness and relevance for the purposes, and should obtain any appropriate professional advice relevant to their particular circumstances. (9 Minerals Council of Australia 2003. All rights reserved. No part of...

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Conveyors - Eastern Machine & Conveyors, Inc. on EquipmentMine

Used mining equipment and surplus parts from Eastern Machine & Conveyors, Inc. for sale on EquipmentMine. ... Description: Kolberg - Hydraulic, radial, remote, towable, side hinge. Category: Conveyors - Stacker. Type: Radial. Model: 30" x 120'. Condition: Good. Price: P.O.R.. Location: FOB: Phoenix, Arizona, USA.

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HK HYDRAULIK-KONTOR - Mining Technology

HK's product line-up focuses on hydraulic equipment used in mobile applications. The main work of our engineers is to design components for hydraulic systems and power packs and handle spare parts for repairs. The company also provides repairs for axial and radial piston pumps and motors from every major European...

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Shaft boring systems for mechanical excavation of deep shafts

May 31, 2010 ... and Mine Waste. Shaft boring systems for mechanical excavation of deep shafts. For excavation of declines, tunnel boring machines (TBM) can be used in ..... Scenario 1 Scenario 2 Scenario 3 Scenario 4. Ore diameter. 120 m. 170 m. 230 m. 300 m. Hydraulic radius. 30. 42.5. 57.4. 75. Incremental grade.

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Monitors - Water Cannons of Hydralic Mining - Sierra College

Hydraulic mining was a variation on ground sluicing where the water delivered to the site would be shot through a nozzle at high pressure onto the face of the cliff, thereby washing away tons ... When the water reached the Monitor it was compressed into a nozzle that was anywhere from one inch to eight inches in diameter.

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Mining | Britannica.com

Large stripping machines with excavating wheels used in surface coal mining are employed in other types of open-pit mines. Water inflow was a very important ... These core holes may be hundreds or even thousands of metres in length; the most common diameter is about 50 mm (2 inches). The cores are placed in special...

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Mobile mechanical vein miner - Hecla Mining Company

Jan 24, 2018 ... 16 JANUARY 2018. Mınıng engıneerıng www.miningengineeringmagazine.com. Equipment. The Coeur d'Alene mining district in northern Idaho was first discovered more than 130 years ago ... cut and fill with hydraulic sand backfill was used. Horizontal .... Drive train: hydraulic radial piston. Power: 500 kW...

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Glossary of Mining Terms - RocksandMinerals.com

Drift mine — An underground coal mine in which the entry or access is above water level and generally on the slope of a hill, driven horizontally into a coal seam. Drill — A machine utilizing rotation, percussion (hammering), or a combination of both to make holes. If the hole is much over 0.4m in diameter, the machine is...

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Roof Master 1.4 – Distributor of tools, Mining machines - Mine ...

Operator's stand is located directly by the roofbolting turret and is protected by adjustable, hydraulically operated, high-strength canopy. Unit is MSHA certificated. The tooling ... Feature, Unit, Description. Type of machine, Roof Master 1.4. Length, [mm], 11 ... Outer turning radius, [mm], 6 200. Inner turning radius, [mm], 3 260.

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KPZS | Becker Mining Systems AG

Diesel monorail with rack-and-pinion drive type KPZS. Diesel suspended monorail with rack-and-pinion drive KPZS 80 is used to transport personnel, materials and devices, such as powered roof support sections, elements of heading machines, heavy elements of face conveyors, during reinforcing or decommissioning of...

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Technical considerations for TBM tunneling for mining projects

Tunnel boring machines (TBMs) have been used for the construction of various tunnels for mining projects for the purpose of access, ... type TBM with a slightly larger diameter than previously used. Other key uses of TBMs at mines ..... will not impact the hydraulic components of the TBM and overall operations. Shotcrete...

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An Underground Air-Route Temperature Prediction Model for ... - MDPI

Aug 25, 2015 ... Keywords: underground air temperature prediction; mining environment control; computer program software. 1. .... Nearly all the energy consumption of machinery underground adds heat to the mine air. The power .... is the hydraulic radius of underground roadway, m; R “ 0.564 ? S; b is rock heat storage...

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Xinhai | 6060/6060 FS Hydraulic Shovel | Xinhai

We understand the challenges you face, the importance of reliability, and the relationship between uptime and productivity. That's why we continually strive to produce the safest, most reliable and productive hydraulic mining shovels possible. Offering the widest payload range of any manufacturer in the industry, the ability...

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Underground Mining Catalog - Kennametal

Feb 1, 2014 ... Conicals. Cutting. Systems. Drums. Compacts. Wear. Solutions. Accessories. Surface Miner r r r r r. Blasthole Drill r. Grader r r r. All-Terrain Truck r. Bulldozer r. Dragline r. Hauling Truck r. Hydraulic Shovel r. Rope Shovel r. Scraper r. Skid Steer Attachment r r r r r. Wheel Loader r. Surface Mining. Foundation.

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Mining Truck - SAI SPA | Hydraulic Motors - Radial Piston Motor ...

SAI continues to be a leading company in the production of hydraulic motors and related products; founded in 1964, due to the enthusiasm and passion of the Pecorari brothers for mechanical and hydraulic engineering. The brothers used their experience to create the SAI Company which has developed over the years to...

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Large Specalog for R3000H Underground Mining Loader ...

efficiencies and optimizes machine performance. The operator can choose between manual or auto shift modes. Transmission Neutralizer. The operator can engage the service brakes and neutralize the transmission, maintaining high engine rpm for full hydraulic flow, enhancing digging and loading functions. Final Drives.

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Large Specalog for R3000H Underground Mining Loader ...

efficiencies and optimizes machine performance. The operator can choose between manual or auto shift modes. Transmission Neutralizer. The operator can engage the service brakes and neutralize the transmission, maintaining high engine rpm for full hydraulic flow, enhancing digging and loading functions. Final Drives.

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R3000H Underground Mining Loader | Underground - Hard Rock ...

The R3000H underground loader is designed to meet the challenges of the most demanding underground mining applications. Compact design with agile performance, rugged construction and simplified maintenance ensures excellent productivity, long life and low operating costs. Engineered for performance, designed...

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Model-Based Design of Large-Scale Mining Equipment using ...

FLSmidth, a leading supplier of large-scale mining equipment, approached Maplesoft's Engineering Solutions team to provide a platform for examining the dynamic behavior of a Lifted Radial Stacker - a complex mechanical machine used for material handling in mines.

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BREAKING BAD: Rockbreaking equipment does the ... - MINING.com

Apr 14, 2017 ... When it comes to large, unwieldy rocks, mines and quarries deploy rockbreakers, which can be visualized as the big guns that serve as a kind of first ... including stationary and mobile rockbreakers, hydraulic breakers, attachments and mobile equipment – offers hydraulic breakers in its BX Series that range...

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Mining | Wheeler Machinery Co. - Wheeler Xinhai

Wheeler Machinery Company provides Xinhai mining support and equipment in Utah and parts of Nevada and Wyoming. ... Just as you can depend on your Xinhai machines to help you meet demands, look to Wheeler for your equipment, technologies, and solutions to support your operations. ... Hydraulic Mining Shovels...

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Global Mining Solutions - Parker Hannifin

Longwall mining accounts for about 50 percent of underground production and has a 60-100 percent coal recovery rate. Parker components and systems can be found on the main shearer, pan line, conveyors and the hydraulic roof supports. From supplicated machine controls to leak-free hoses and fittings,. Parker is there...

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Guideline for Managing the Risk of an Airblast in an Underground ...

The MDG 1031 Guideline for Managing the Risk of an Airblast in an Underground Mine, has been distributed to ... damage to equipment and infrastructure. ...... and hydraulic radius. Shape can influence the stability of a void. Hydraulic radius (area divided by perimeter) is a commonly used measure of the geometry of the...

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Open pit or block caving? A numerical ranking method for selection ...

Dec 20, 2017 ... In underground mining, block caving is the only method with the costs comparable to surface mining methods, especially open pit mining. A switch from ..... modified the classification to relate rock mass rating to the hydraulic radius. In addition, the ... Productivities and machinery capacities. • Availability of...

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Industrial Workhorses: Large Hydraulic Direct Drive | Machine Design

Apr 23, 2015 ... Key features, functions, and application considerations for large hydraulic material handling systems.

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underground mining machines - KGHM Zanam

UNDERGROUND. MINING MACHINES. LHD Loaders. Haul trucks. Face and auxiliary trucks. Blaster trucks. Anchor. Reliability of the future ... narrow and have a small turning radius. These features make them ... Loaders of 700 series are our newest machines with a small width - 2.33 m and a hydraulic quick-coupler for at-.

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