DD292297B5 - Method of excavation using a bucket wheel excavator - Google Patents

Description

Dor Massonanteil when cutting into a new block of the 1st and 2nd cut is on the stationary belt system, and the rest of the mass fraction is loaded and transported via the guided in front of the device retractable tape anlage.

Ausführungsbelsptel

The invention will be explained in more detail below with reference to a Ausführungsboispieles. The accompanying drawings show

Fig. 1: Abbauschema a parallel operation with use positions of a bucket wheel excavator Fig. 2: Mining cross-section in Strossenbereich.

A bucket wheel excavator 1 is about the Verladegeration 2 (device positions b and d) on a scraping belt 3 on scraping, which lies in the direction of degradation in front of the device on the working plane 13 in the rolling earth 18. The belt system 3 transfers the space dimensions to a stationary belt installation 12 arranged at right angles to it.

Via a ramp 16, which lies in the area of the stationary conveyor system 12 and is cut by the bucket wheel excavator 1 itself, the bucket wheel excavator 1 wins the first cut 7 from the device position a, thereby producing the working plane 14. The lane 4 of the bucket wheel excavator 1 and the lane 5 of the loading device 2 are guided on the newly cut working plane 14. The thickness of the first cut 7 is dependent on the possible amount of lifting the Verladeauslegers in Punki the transfer to the belt system 3; 12 set. After obtaining the first section 7 in the direction of the grouting 11 to the head embankment 9, there is an empty transport of the bucket wheel excavator 1 and of the loading device 2 until the beginning of the straw. Thereafter, the bucket wheel excavator 1 cuts across a ramp 17 in the second section 8 (device position c) with the working plane 15 a. While the lane 6 of the bucket wheel excavator 1 runs on the working plane 15, the lane 5 of Verladegerätos 2 remains on the working plane 14 of the first section 7. The thickness of the second section 8 is dependent on the allowable difference in planum of the bucket wheel 1 and the loading device 2. The bucket wheel excavator 1 wins the entire second section 8 to Kopfbokschung 9. Thereafter, the empty transport of the bucket wheel excavator 1 and the loading device 2 in the starting position (device position a) for dredging the next block passage. The mass fractions of the ramps 16; 17 and the Einschneidbereiches the sections 7 and 8 (device positions a and c) are loaded on the stationary conveyor system 12.

reference numeral

1 bucket wheel excavator

2 loading device of the bucket wheel excavator

3 conveyor system, removable, equipped with ATF (hopper trolley)

4 lane of the bucket wheel excavator in the first cut

5 lane of the loading device

6 Lane of the bucket wheel excavator in the second section

7 first cut

8 second section

9 Kopfbokschung end of the tail

10 degradation direction

11 direction of swelling

12 conveyor system, stationary, equipped with ATF (hopper car)

13 working level I

14 working level Il

15 working pillars III

16 ramp I

17 ramp Il

18 rolling earth in the first cut a-d device positions

Claims (2)

1. A method for Abraumgöwinnung means bucket wheel excavator with pre-charger or belt carriage, dor abandons a guided in degradation direction in front of the unit conveyor belt, characterized in that with the bucket wheel excavator (1) and the loading device (2) after dredging (16) of the working plane ( 13) of the belt system (3; 12) is guided from a first cut and after a second ramp dredging (17) of the bucket wheel excavator (1), with the Verladegeres (2) on the working plane (14) of the first cut (7) second cut (8) takes place, wherein the ramps (16; 17) are arranged at an angle to the direction of displacement (11) outside the dismantling sector. 2. A method according to claim 1, characterized in that the cutting of the ramps (16; I7) and cutting into the blocks (7; 8) takes place in the area of the stationary conveyor system (12). For this 1 page drawings Field of application of the invention The invention relates to a method for excavation by means of bucket wheel excavator with Verladegerät or belt truck in opencast mining operation. Characteristic of the known state of the art Bucket wheel excavators on crawler tracks are used in the Kopfblockverhieb and in Seitenblockverhieb. Usual Weiso while the belt system seen in the degradation direction behind the bucket wheel excavator and on the working level. In the so-called ramp dredging the belt system is temporarily lower than the working level of the bucket wheel excavator. Lit .: Tagebautechnik Volume 1, Ed .: Strzodka, K., u. a., VEB German publishing house for primary industry, Leipzig, 1 .Auflage 1979, chapter 7.4. The disadvantage here is that in cohesive soil in the plan, where belt conveyor must be moved, the working levels stabilized, especially must be bekiest. This requires additional manpower and time of tipping technology, which has a performance-reducing effect on the bucket wheel excavator. In connection with the selective mining of coal or overburden under a Direktversturzkombination is known from DD2'16591 to hand over the conveyed to a operated in the foothills of Direktversturzabsetzers for mine embankment belt plant. Here is an excavator directly or with the interposition of a belt truck on the belt system, which is operated on a higher Arbeitsebsne than the devices on. Excavators and belt trucks are operated at the same working level. The thereby to be overcome difference in level between the device working level and the level of the conveyor and thus the excavated to be excavated height, is determined by the Verladeausleger the band wagon and is relatively low. With regard to the necessary Planumstabilisierungsarbeiten for the belt system arise in this arrangement, the o.g. Disadvantage. Object of the invention The aim of the invention is. Use bucket wheel excavator with loading device or belt truck so that for the associated Strossenbandanlage eliminates additional gravel and related labor and time and power reductions on the bucket wheel excavator can be avoided. Explanation of the essence of the invention The invention has for its object to provide in Abraumbandbetrieben a method for bucket wheel excavator with Verladegerät or belt truck, which makes it possible to perform the associated belt system on the uppermost excavator from rolligem floor in front of the device in the degradation direction and thereby exploit the maximum possible removal of the bucket wheel excavator. According to the invention the object is achieved in that the bucket wheel excavator together with the Verladeger or belt truck from the working level of the belt system by ramp excavation - taking advantage of the possible amount of lifting the Verladeauslegers at the point of transfer to the conveyor system cuts the working plane. Together with the loading device, the first cut is made over the entire section on this working level. After the cut has been completed, the bucket wheel dredger dredges into a second cut, leaving the loading equipment or the trolley at the working level of the first stage, using the possible difference between the bucket wheel excavator and the loading device or belt trolley Multi-disc dredging over the entire straw. In addition, to achieve a maximum removal thickness from the working plane of the second cut, a corresponding to the bucket wheel excavator possible low cut can be assigned as a third section. For optimal cutting development, it is necessary to apply the ramps at an angle to the Abhiebsrichtung outside the mining sector, especially in the field of stationary conveyor system.