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Influence of rock camber development technology on the size and shape of oversized camber
oleh: V.V., V.T., V.I., M.V., V.O.
| Format: | Article |
|---|---|
| Diterbitkan: | Zhytomyr Polytechnic State University 2022-12-01 |
Deskripsi
The publication considers two schemes for working out rock collapse with a mechanical shovel with a bucket volume of 5 m3 in the conditions of the Leznykivskyi quarry. Photogranulometric analysis of the blasted rock mass is performed using software WipFrag 2010 Advanced Tutorial. The camber of the rock was divided into sets and the amount of oversized material that falls on each set of the excavator was determined. The average rock camber width is 55–65 m. With the end mining scheme, the smallest amount of loosened rock falls on the first pass of 12–18 %. The other two passes account for approximately the same amount of rock (37–43 % and 42–49 %). The dependence of the rock camber width on the width of the excavator pass and the position of this approach was established. The panel method of working out the camber of rock mass, which is used for wide working sites or for the development of small quarries behind the front of work, is also considered. The width of the camber is shaped like a trapezoid and varies depending on the distance that the excavator has moved deep into the face. At the same time, the scooping radius does not affect the width of the oversize camber. The dependences of the rock camber width on the pass width were established in the panel method of rock collapse testing.