2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:42
Mankind's need for minerals is great. Every day, not only oil or gas is produced on our planet. A problematic, but at the same time, a developed industry is the development of coal deposits. The main place of extraction of this mineral is a quarry. That is, a mining enterprise designed to develop a deposit in an open way. For mining, deep cuts are made in the earth's crust, opening access to the target - coal.
Key problems in the extractive industry
Coal mining is more than just quarrying. The other side of the coin is the transportation of the obtained raw materials to processing enterprises. It is not economically feasible to build a huge conveyor in a quarry that throws coal upwards, since its design will be subjected to constant overloads, as a result of which it will become unusable after a couple of months of operation. Laying tracks for rail transport is also very problematic, since access to the maximum depth of the quarry occurs along a spiral path. Therefore, the only true solution to the problem of transportation is the largest BelAZ - a mining dump truck of the Belarusianproduction.
Why a mining truck?
Why use such a large vehicle? This is advantageous due to its power and load capacity. Just imagine that an ordinary truck-type tractor is capable of transporting only 20 tons of cargo, while the largest BelAZ moves 450 tons without problems. So, after small calculations, we get that such a special vehicle is capable of replacing almost 23 trucks. If we take into account the not very convenient conditions for moving vehicles along the quarry spiral road, then a dump truck of this size is simply irreplaceable.
Dump Truck Benefits
If we continue the theme of the advantages that mining dump trucks have, then they give odds to other modes of transport in the following parameters:
- The largest BelAZ has good maneuverability, allowing you to work in relatively tight areas, as well as in places where hard-to-reach faces are formed.
- Small costs for the construction and maintenance of a temporary road in a quarry. If you need a good road surface to move an ordinary truck tractor (at least a gravel road carefully leveled by a bulldozer), then the largest BelAZ trucks are able to climb uphill with a constant slope of 12% and a temporary one - 18%. As a result, the quarry can be more compact.
- The cross-country ability of mining dump trucks is much higher than that of conventional heavy trucks. This is achieved thanks to the huge size of the wheels and the careful designtheir drive designs. So, the largest BelAZ has record-breaking wheels, the diameter of which is about 4 meters.
- In combination with a single-bucket excavator, a mining truck will ensure maximum productivity of field development.
Road transport has one significant drawback when compared to rail transport - high fuel costs. However, in view of the circumstances described above, you can close your eyes to it. Therefore, a mining dump truck is indispensable in organizing the transportation of ore rocks over short distances, followed by loading onto a train.
Lineup
The relevance of the design stimulates vehicle manufacturers to develop a wide range of mining dump trucks. Many machine-building enterprises around the world are engaged in the release of such "giants". One of them was organized in September 1948 in the BSSR. There are photographs in which the largest BelAZ trucks of that time work for the benefit of the Soviet socialist society at large mining enterprises.
Today, the plant has significantly expanded its product range. We classify cars by carrying capacity:
- 30 tons - 7540A, 7540C, 7540B.
- 45 tons – 77547, 75473.
- 55 tons - 7555B, 7555E.
- 90 tons – 7557.
- 110-136 tons - 75137, 75135.
- 154-160 tons – 7517.
- 200-220 tons - 75302, 75306.
- 320 tons – 7560.
A leader who became pridedevelopers, is the largest BelAZ 7571 dump truck with a carrying capacity of 450 tons.
Product implementation examples
During its operation, the plant in the Belarusian city of Zhodino has significantly expanded its customer base, so today it boasts every third mining dump truck in the world with its own logo on the body. As for the record holder described above, the largest BelAZ successfully operates in the Kemerovo region of Russia. The dimensions of the mining dump truck are really amazing: length - 20.6 meters; width - 9, 87 meters; height - more than 8 meters. Fuel consumption at maximum load on both power plants is almost 600 liters per hour.
There are other regions of the world where dump trucks from Belarus help to extract minerals. So, for example, in January of this year, the operation of BelAZ trucks with a carrying capacity of 110 tons began in the Tavan Tolgoi field, located in the Gobi Desert (Mongolia).
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