Abstract: In the Mining Sector, Safety is utmost important factor. The major goal of this article was to reduce the Mine Accidents with respect Mine Haulage and Transportation system in underground Coal mines. Total 11 major hazards are identified as Principal Hazards in Indian coal mines, as per DGMS Circular of 2016 for which Principal ...
bunkers and from the bunkers the coal is transported into Washery by the Trucks after weighing on 60T Lorry weigh bridge. Transportation of Coal by Trucks is not under this scope. After washing and other arrangements the grade Coal converted to G9 G12 washed G9 grade coal, after weighment on 60T Lorry weighbridge,
namely the movement of ore/coal, persons, materials and equipment. Ore/coal transport has either been by locomotivehauled mine cars, belt conveyors or rubbertired trucks. The transport of persons, materials and equipment has either been by railmounted track systems or trackless systems/movable vehicles. Each system described above is still
A semicontinuous process system consisting of a singlebucket excavator, truck, crushing station, and belt conveyor is the main coal mining process system of a largescale hard coal openpit mine. Through analyzing the coal mining production process, the key issues of coal mining truck flow optimization are obtained. Statistical method of using triangular fuzzy numbers analyzes the key time ...
The machine is very useful in mines where seepage is excessive or where rain water forms muck, or where coal pillars are extracted by opencast method. It is quite convenient for cutting garland drains and sump. In Indian coal mines only small backhoes of capacity to m³ are used for special purposes stated above.
JOURNAL OF COAL SCIENCE ENGINEERING (CHINA) DOI /s pp 313319 Sep. 2012 Mining truck scheduling with stochastic maintenance cost Erkan TOPAL1, Salih RAMAZAN2 1. Mining Engineering Department, Western Australia School of Mines, Curtin University of Technology, Kalgoorlie, WA 6433, Australia 2.
This study established a truck dispatching model adopting 01 decision variables to rationally allocate truck transportation in openpit mines, maximize the total loading and unloading volume of trucks, and solve the problem of the inability of the truck dispatching model to guide production in openpit mines because of nonspecific results. The model considers loading and unloading logical ...
Most notably these include highwall mining machines, load haul dump vehicles (LHDs), rock drills, and haulage trucks. ... Pursuit of accurate navigation and control of continuous mining machines for coal mining, Proc. 4th Int. Symp. Mine Mech. Autom. (Brisbane 1997) pp. ... Autonomous mine truck, Mining Mag. 175(5), 287288 (1996)
A lowprofile intermediate haulage truck. Used to transfer coal from a loading or mining machine to an underground loading point, mine railway, or belt conveyor system. Skip. A selfdumping bucket for hoisting ore or rock in a shaft. Stacker. A large machine used in bulk material handling. For piling bulk material onto a stockpile.
The first doublepower transmission mining truck for use in an underground mine was designed in China for a full load of 35 t, a speed of 25 km·h −1, and a maximum climbing slope of %, as shown in Fig. 14. In addition to its unmanned driving function, the truck is capable of vehicle lanespace detection and intelligent auxiliary driving ...
Approximately, 40% of the total energy used in surface mines is related to diesel consumption. Truck haulage is responsible for a majority of this. This chapter introduces the principal equipment used to load and haul materials in mines, namely trucks, electric rope shovels, hydraulic excavators and crushing and conveying systems.
Safety features in tippers / trucks01) Cabin guard extension canopy shall cover the operators cabin fully. 02) Exhaust / retarder brake device to control the speed of truck while operating down the gradient. DGMS (tech) circular 02 of 2004 In dumpers, retarders are provided to slow the speed of engine in such cases. In tippers, manufacturers are now providing exhaust brake as an extra ...
Transport activities in openpit mines contribute to a large portion of total energy consumption. Most truck scheduling studies still take a traditional approach to autonomous mining trucks, which does not fully exploit the strengths of the autonomous trucks that can perform more accurate speed control compared to conventional manned trucks. In this paper, a mixedinteger programming model is ...
The framework is used for allocating trucks by route according to their operating performances in a truckshovel system of an openpit mine, so as to maximize the overall productivity of the fleet.
![[PDF] The comparison of automatic and manual loading in an underground ...](/pmulwvg/327.jpg)
Has PDF. Author. More Filters ... 2005; Abstract This work is a survey on the automation of loadhauldump trucks in underground mining. Background on the purpose of LHD ... purpose of this paper is to evaluate and analyse the production and maintenance performance of a manual and a semi‐automatic load haul dump (LHD) machine to find ...
trucks and shovels within a mine field are presented. Keywords: Opencut mining, truckandshovel systems, block model, LerchsGrossman algorithm, application domain. DOI: /S It is well known from the global and Russia's experience in open mineral mining that loadhaul
truck arrive for loading and the rate of truck service by shovels, justified and defined in [7, 8]. The results of calculating the functional criterion are summarized in Table 2. Table 2. The results of calculating the functional criterion for assessing the STS operation quality at openpit coal mines Indicators Mines
Trajectory planning for a heavyduty mining truck near the loading/dumping sites of an openpit mine is difficult. As opposed to trajectory planning for a smallsized passenger car in a parking ...
Mist spray systems have been introduced and the trucks are being covered by tarpaulin. Fog canon, wheel washing system, mechanical road sweepers etc. are being deployed for control of air pollution. In last two years, Coal/Lignite PSUs have deployed/installed 283 mist sprayer/fog canon, 11 wheel washing, 18 mechanical road sweeper and 59 CAAQMS.
Diesel is also used for operating hauling machines (dump trucks) in opencast mine and accounts for 56% of the total diesel consumption. In this paper, a methodology is proposed for calculating overall energy consumption in major energy intensive mining processes such as loading and hauling operations of the coal mine.
This paper describes an autonomous loading system for loadhauldump (LHD) machines used in underground mining. The loading of fragmented rocks from draw points is a complex task due to many factors including: bucketrock interaction forces that are difficult to model, humidity that increases cohesion forces, and the possible presence of boulders. The proposed system is designed to integrate ...
Abstract. Robots are being utilised for mining applications since 1976. However, since 2002, robots are widely into mining from conception to end product or even endusers. Lidar sensors connect robot with a realtime map making it travel safely but detects and avoids obstacles on its own. Autonomous Mobile Robots (AMR) are widely used to ...
Autoloading without modification of the truck. The NALON N8 is a system for the automated loading and unloading of trucks and containers. The system is va lid for any truck with no need for modifications, and has a capacity of 150 pallets per hour. The NALON N8 can work on multiple loading docks, thereby increasing productivity.
Loadandhaul operation. The loadandhaul operation can be seen as a continuous cycle that is made up of different production steps or activities. The loadhaul cycle time is the total time to complete a full cycle. The critical cycle steps, as time fractions of the total cycle, have been identified by Krause (2006):
2. The Collinsville Coal Mine equipped with high precision guidance from GPS. 3. Arizona mine uses localised network which uses different highend computer networking system. It tracks the movement of each truck and shovel and then decide when a shovel will need a truck to load, and which truck will be nearby.
Miners, mine operators, and contractors have important roles to play in mine safety. Mine safety can be substantially improved by preventing accidents that involve powered haulage equipment. Accidents involving powered haulage equipment have historically accounted for a large number of the fatalities and serious injuries in mining.
Both LHDs and mining trucks (figure 2) can be used in underground mines and fitted with automatic systems. However, while the former have a bucket and can therefore load the ore/minerals, the latter can be used only for transportation. In open cast mining, it is common to use larger trucks than those used in underground mines.
Mining vehicles follow specific routes (safety) For mining sites to be safe, removing human labor from the equation is an effective way to do so. While for the operation to be 100% autonomy is not possible, but just the mining vehicles, it is possible. The autonomous mining trucks can travel between sites employing midway checkpoints
To improve the purity of coal and prevent damage to the coal mining machine, it is necessary to identify coal and rock in underground coal mines. At the same time, the mined coal needs to be purified to remove rock and gangue. These two procedures are manually operated by workers in most coal mines. The realization of automatic identification and purification is not only conducive to the ...
The truck dispatching problem in openpit mines is formulated into an integer programming problem in order to optimally determine the trip numbers of trucks from a shovel (dump site) to a dump ...
The description of modern control miningandtransport complex systems shows that operator control is currently used. During the replacement with robotic control systems, automatic and automated ...
In these projects, the boring machines drill through rocks characterized with different properties. In coal mines, coal is one of the major types of sedimentary rocks with low uniaxial compression strength (UCS) (<120 MPa). The drilling depth in coal mines can reach 600 m, and the maximum diameter of back reaming reaches 5 m.
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