open pit mining schematic diagram

METHOD FOR CONTROLLING SUBSIDENCE AREA CAUSED BY ...

1. A method for controlling a subsidence area caused by underground mining adjoining an open pit mine, wherein, comprises the following steps: a. with the advance of the open-pit mine, a goaf is formed in an underground mining face along with an advance; along with a collapse of an overlying strata, two types of damaged zones, i.e., medium and small fracture zones and large fracture zones ...

Topic 5: Mining Methods-Part I-Surface mining

 · Topic 5: Mining Methods-Part I-Surface mining 1. Topic 5: Mining Methods Part I-Surface mining Hassan Z. Harraz [email protected] 2010- 2011 Prof. Dr. H.Z. Harraz Presentation This material is intended for use in lectures, presentations and as handouts to students, and is provided in Power point format so as to allow customization for the individual needs of course …

OPEN PIT MINE PLANNING: ANALYSIS AND SYSTEM …

planning and design processes employed by surface mining oil sands operations vary in distinct ways from other commodities mined by both hard and soft rock open pit methods. The unique waste handling needs, including tailings disposal, of contemporary oil sands mining …

11.19.1 Sand And Gravel Processing

Mining methods depend primarily on the degree of cementation of the rock. In some deposits, blasting is required to loosen the material prior to processing. The material may undergo primary crushing at the mine site before being transported to the processing plant. Figure 11.19.1-2 is a flow diagram for industrial sand and gravel processing.

Uranium: How is it Mined?

Open Pit Mining. Open pit mining, also known as strip mining, is the removal of surficial soils and uneconomic rock to get at the ore below. Ore grades are normally less than 0.5%. This is type of mining is only possible if the uranium ore is near the surface (normally less than 400 ft).

Design of Surface Mine Haulage Roads

Mining Trucks. Pres. at Earthmoving Industry Conf., Central Illinois Sec., SAE, Warrendale, Pa. Apr. 15 16, 1975, 33 pp.) This organization has conducted more than 1,000 haulage truck stopping distance tests at active mine sites in British Columbia. The variety of truck makes and models included in the testing program present a representative brake

Underground Mine Backfilling in Australia Using Paste ...

Open pit (Fig. 1a) and underground mining (Fig. 1b) are two different ways of mining to recover shallow and deep ore bodies, respectively. The discussions in this paper are ... Fig. 2 Schematic diagram showing a primary-secondary stope extraction sequence and with access drives in an underground mine

Appendix E: Coal Mining and Processing Methods | Coal ...

In surface mining, the ground covering the coal seam (the overburden) is first removed to expose the coal seam for extraction. The elements of a surface mining operation are (1) topsoil removal and storage for later use, (2) drilling and blasting the strata overlying the coal seam, (3) loading and transporting this fragmented overburden material (called spoil), (4) drilling and blasting the ...

Zaldívar Copper Mine

The projected mine life is 20 years. Mining. Zaldívar uses conventional open-pit mining systems. Open-pit wall slope angles vary from 38° to 50°, while haulage ramps are 30m wide with a maximum gradient of 10%. A sequence of eight open pit stages were planned, with production in 2005 coming from stages 3 and 4 of the pit.

Mining and Extraction: Oxide Ores

Copper Mining and Extraction: Oxide Ores. Copper is refined from ores in the ground, either through underground or open-pit mines. Most of the copper ores mined today are oxide or sulfide ores. Extraction of sulfide ores is covered in more detail in Copper Mining and Extraction: Sulfide Ores (11–14), but is introduced here because an ...

Placer Dome Copper-Gold Mine

Mining. Access to the underground mine is via a decline with a portal located in the wall of the open pit, 80m below surface. Open-panel stoping accounts for recovery of around 90% of the in-situ ore, with 89mm-diameter blast holes, 20m long, being drilled to break the ore. Uphole bench stoping is used at depth. No fill is used to replace the ...

Variable-speed drives for belt-conveyor systems

ABB Process Industries - Open Pit Mining & Materials Handling, Cottbus/Germany Fig. 9: Diagnostic tools on a conveyor Summary Some of the benefits of controlled drives are • an optimum loading of the belts through controlling the belt speed, depending on the load volume, in the range of 3.0 … 6.0 m/s; reference values are supplied by

Opencast Mining

Schematic design of benches, footwall and hanging wall slope angle within stability and safety of miners and machineries and ultimate pit bottom in open-pit mine planning. The vertical height of benches varies between 5 and 10 m depending on width of the orebody, type of machineries deployed and to …

An Optimization Framework for Cut-and-Fill Mining ...

Fig. 1. A schematic diagram of stopes layout. This study is focused on the optimization of mining production phases for cut-and-fill underground mining. Fig. 2 shows the stope production phases modeled in three separate phases including advancement, extraction, and backfilling. In cut-and-fill mining, all work is done inside the stope,

Copper Mining & Extraction Process Flow Chart

 · Copper Mining & Extraction Process Flow Chart. This flowchart made of machinery icons explains or expresses in simple but clear terms the step of the Copper Mining and Copper Extraction Process. Starting from either open-pit or underground mining and using a different relevant treatment method for oxide or sulphide copper mineral (ore).

Open pit mining schematic | Mobil™

Mining operation - open pit/exploration phase. Explore equipment and application specific to your industry in the below schematic. You can click on red hotspots in the schematic or on items in the right-hand equipment menu to see corresponding lubricant information. You can then click on a specific lubricant to see more detail about that product.

Best practice and new technology in open pit mining ...

BEST PRACTICE AND NEW TECHNOLOGIES IN OPEN PIT MINING GEOTECHNICS 171 The Leica GeoMos system was commissioned at Geita Gold Mine in July 2007. A schematic diagram illustrating the GeoMos system deployed at Geita Mine is depicted in Figure 4. Screen grabs illustrating the monitor and analysing functions of the system are depicted in Figures 5

shaft mine: types of mines

The diagram depicts a cross section of three different kinds of mines, along with structural elements of the underground shaft and slope mines. The shaft mine has compartments for a skip hoist, elevators called cages, and service facilities such as ventilation ducts. In a slope mine, the miners also work at different levels, and the ore is sent to the surface in bucket hoists.

Water inrush characteristics and hazard effects during the ...

 · To exploit the deep-seated ore bodies, the mining method transitioned from open-pit mining to underground mining. The five horizontal mine roadways at elevations of −123, −213, −303, −321 and −501 m were excavated, as shown in figure 10. Changes in the groundwater head after roadway excavation were simulated in the calibrated model.

Strip Mining

The primary planning mechanism used in strip mining is the range diagram, which is a cross-sectional plan of the shape of the pit in various stages of mining. The range diagram allows the dragline or continuous excavator equipment characteristics of dig depth, reach, and physical size to be placed on the geologic dimensions of depth to seams ...

Major Mines & Projects | Akyem Mine

The mining method at the Akyem mine involves removal of ore and waste rock from an open pit mine. The open pit is an elongated structure consisting of a large western lobe (Main Pit) and a small eastern lobe (East Pit), connected near the surface. The planned pit …

Uranium Mining and Extraction from Ore

Underground and Open Pit Mining. ... [2,5] Fig. 3 shows a schematic of the in-situ leaching process, in which the leaching solution is pumped into the ore zone containing the uranium ore. The leaching solution is pumped back up into a plant for further processing. A significant concern with in-situ leaching is the contamination of the soil and ...

Copper Process Flowsheet Example

 · A simplified schematic drawing of copper flotation flowsheet. Run-of-mine open pit ore will be crushed in a gyratory crusher. The crushed ore will be processed by means of semi-autogenous and ball mill grinding followed by rougher flotation, regrind, cleaner flotation, and dewatering to produce copper concentrate.

Surface Mining Methods and Equipment

The higher productivity for open pit mining equipment also lowers costs. The necessary underground equipment for maintaining productivity is more expensive on a unit basis capacity than corresponding open pit equipment. Furthermore, the large production scale and share number of open pit mines have provided the opportunity for manufacturing

Surface Mining | Surface Mining | Mining

H.Z. Harraz Presentation Mining Methods, Surface mining. 3 35 1 Open-pit slope failure case study groundwater problems A slope failure occurred at the Cleo Open Pit (Sunrise Dam Gold Mine, Western Australia) in December 2000. At the time of failure the pit-floor was at 100 m depth below surface.

Modern Strategic Mine Planning

from open pit to underground mining, and the placement of shafts. As with financial ... Returning to financial options, Figure 1 is a schematic that depicts the management of a call option to buy a stock for a fixed price or exercise cost. The ... The bottom diagram shows that the option

Open-pit mining

Open-pit mining, also known as mega-mining, open-cast or open cut mining, is a surface mining technique of extracting rock or minerals from the earth by their removal from an open-air pit, sometimes known as a borrow.. This form of mining differs from extractive methods that require tunnelling into the earth, such as long wall mining.Open-pit mines are used when deposits of commercially useful ...

Underground Mine Backfilling in Australia Using Paste ...

 · Open pit (Fig. 1a) and underground mining (Fig. 1b) are two different ways of mining to recover shallow and deep ore bodies, respectively. The discussions in this paper are limited to backfilling underground mines, which are located from hundreds to thousands of metres below the ground level that are accessed through ramps, shafts and tunnels.

Venetia Mine

SCHEMATIC OF OPEN PIT WASTE CUTS. SCHEMATIC & STATISTICS OF CUT 3. SCHEMATIC & STATISTICS OF CUT 4. ORE EXTRACTION WORK FLOW DIAGRAM Plan & Schedule Mine Design Blast Design Drill Blast Load Haul MTP Waste Crusher. ORE PROCESSING. Primary Crusher (From Ore Extraction)-150 mm Main Stockpile Scrubbing

Motor Control Systems Analysis, Design, and Optimization ...

University of Arkansas NASA Robotic Mining Competition robot. The open-loop system is to be ... Equivalent Electric Circuit and Free-Body Diagram of the Rotor for an Armature- ... Competition Pit for NASA RMC Runs. [1] This diagram is important to consider not …

Frontiers | Variation of Open-Pit Waste Dump Specimens ...

 · Landslide is a threat for the workers, the environment, and the equipment in the waste dump of open-pit mining, and to keep the slope stable and safe is the number one priority. The present study investigated effective pressure influencing porosity, void ratio, and permeability in the open-pit waste dump. ... Schematic diagram of constant-head ...

1.1 PHASES OF A MINING PROJECT

1.1.3.1 Open-pit mining Open-pit mining is a type of strip mining in which the ore deposit extends very deep in the ground, necessitating the removal of layer upon layer of overburden and ore. In many cases, logging of trees and clear-cutting or burning of vegetation above the ore deposit may precede removal of the overburden. The

Phase Planning for Open Pit Coal Mines through Nested Pit ...

 · This paper presents a phase planning method specially designed for coal deposits with nearly horizontal, bedded coal seams. The geology of this type of deposit is modeled into a column model, instead of a block model, to avoid coal-rock mixing in blocks. A nested pit generation algorithm is developed for producing a series of nested, least-strip ratio pits with a column model as its input.

For personal use only

 · Figure 3 ‐ Schematic diagram showing staged open pit mine development. The final pit "shell" applied is the same for both the 1.5Mtpa and 2.0Mtpa mill capacity scenarios. The production schedule differs only in the rate at which mine production proceeds.

Oil Sands Extraction and Processing

Open Pit Mining. Open-pit mining is similar to traditional mineral mining operations and largely employed where oil sands reserves are closer to the surface (less than 75 metres underground). Currently, 20% of oil sands reserves are accessible via mining techniques.