Pre spotting and double sided loading are techniques known to improve throughput and reduce costs in open pit mining Surprisingly many mines abandon this proven methodology when safety questions are asked In fact most open pit mines can use this technique safely and to great effect when all departments work together to find a way
Keywords Shovel truck mismatch Productivity Bunching Spillage TKPH 1 Introduction The use of shovel truck combinations for loading and hauling of material in surface mining is highly capital intensive and hence the need to put proper measures in place to improve efficiencies Shovel truck systems constitute about 50% to 60% of total
The computer based truck shovel DISPATCH system currently operating at the Tyrone mine of Phelps Dodge Corp in New Mexico is an excellent example of succesful application of information systems
An electric mining shovel often referred to as a mining rope shovel or an electric rope shovel is designed specifically to dig and load material in surface mines The electric mining shovel uses electric motors gear reducers drums and wire rope to actuate the digging loading and propelling motions
The loading process in truck and shovel operations is often modelled as a stochastic process due to the high variability An analysis of the haul truck payload data
Application of the proposed methodology resulted in considerable improvements in loading and haulage operations at Figure 16—Regular vs Dispatching 3 month plan The Journal of The Southern African Institute of Mining and Metallurgy A stochastic simulation framework for truck and shovel selection and sizing in open pit mines Table I
Energy efficiency of loading and hauling operations depends on the equipment operating conditions mine planning and operator s performance [13] Of 36 MVA transformers for the mining process Electric shovel is powered from a 33/ kV 16 MVA step down transformer at the substation Alternating current AC is supplied to the shovel
Purpose The purpose of the paper is to provide open pit mining operations with practical strategies and insights to optimize truck loading and hauling cycles ultimately leading to enhanced productivity and economic advantages Methods The objectives are to minimize loading time optimize the haul road network enhance truck performance and optimize
DETERMINATION OF SHOVEL TRUCK PRODUCTIVITIES IN OPEN PIT MINES NGUYEN Hoang1 DOAN Trong Luat2 LE Thi Thu Hoa1 DO Ngoc Hoan1 PHAM Van Viet1 1 Hanoi University of Mining and Geology Hanoi
Shovel truck systems are a prevalent loading and hauling system in surface mining operations The loading units are typically wheel loaders WL hydraulic excavators HEX or rope excavators The trucks can be off highway trucks OHT articulated dump trucks or coal haulers as in coal mining Generally truck fleet sizes increase with
Keywords Surface Mining; Equipment Selection; sizing Equipment Fleet Selection 1 Introduction The production process in a mine is divided into four parts of drilling blasting loading and hauling The later two aspects loading and hauling allocate more than half of the total mining cost
In a mine haul trucks move material from a source to a sink A source such as a shovel fills these haul trucks which then move the material to the sinks which are dumps or crushers The generic mining simulation model process The load and haul optimization solution that was created works by importing two different files into the
In the paper 12 operational delays in loading and hauling using shovel truck system have been discussed Their effects on availability and utilization of the load and haul system have also been
S V Manyele 603 dumped into the truck The problem regarding shovel based payload manage ment is provision of timely accurate and clear data for consistent loading opera
Thesis Title Optimization of truck and shovel for haulage system in the Cao Son Mine Viet Nam using queuing theory Calculation process and 48 51 DISCUSSION Cloading Cost per unit time of shovel Chauling Cost per unit time of a truck Qn Production per hour of fleet 8 CHAPTER 1
Excavator Face Shovel Productivity YY YYY YY Direct Digging YY YYY YY Mobility YYY Flexibility YYY YY L&C QC hammer ripper QC Bucket selection YYY YYY Y Key Rating Selection/Boulder handling YY YYY Y poor Truck loading side loading side or rear side loading Y fair Loading level pit floor bench or floor floor YY good/excellent
Open pit mining operations involve loading and hauling of material from the pit to the processing plant or waste dump depending on the ore grade These two activities account for more than 50% of total operating costs of the mine There are several loading and hauling systems that are employed depending on the geometry of the ore body This study applies a
In open pit mines the blast operation should be effectively optimized leading to minimization of production costs through the application of specific technical specifications However there is inadequate information in the literature to link blasting to comminution stages To this end the effective parameters for the performance of mining unit operations were
surface mines In a surface mining operation materials handling system is composed of loading hauling and dumping Shovel truck systems are most common in open pit mining Shovel truck refers to a load haul dump mining system involving any combination of loading units and trucks The most important factor in every operation is profitability
Truck/Shovel Haulage Systems Meredith Augusta May Thesis submitted to the faculty of the Virginia Polytechnic Institute and State University in partial fulfillment of the requirements for the degree of Master of Science In Mining & Minerals Engineering Erik C Westman Chair Gerald H Luttrell Kramer D Luxbacher 19 December 2012 Blacksburg VA
Shovel truck systems for loading and hauling material in open pit mines are now routinely analysed using simulation models or off the shelf simulation software packages which can be very
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