Determining the effective stroke length of CBW-250 MH blast-hole drilling machines are applied at Cao Son coal mine and Coc Sau coal mine

https://tapchi.humg.edu.vn/en/archives?article=894
  • Affiliations:

    Khoa Cơ điện, Trường Đại học Mỏ - Địa chất, Việt Nam

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  • Received: 15th-June-2017
  • Revised: 20th-July-2017
  • Accepted: 28th-Feb-2018
  • Online: 28th-Feb-2018
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Abstract:

Rotary bit drilling rigs play an important role for blast - hole drilling in several open - pit mining fields at Quang Ninh, Vietnam. It is evident that the stability of hydraulic cylinders and rock resistance essentially influence on effective drilling - stroke length. At a certain hard rock the length of effective drilling - stroke could be expanded. It is considerably greater than fixed stroke. This paper presents the calcualtion method to determine the effective drilling - stroke of rotary bit drilling rigs CBW - 250 MH which are used to drill blast - hole at Cao Son coal mine and Coc Sau coal mine. As the obtained result, the machine productivity is grown up approximately a half by adding 2 more travelling ropes

How to Cite
Nguyen, T.Son and Pham, T.Thi 2018. Determining the effective stroke length of CBW-250 MH blast-hole drilling machines are applied at Cao Son coal mine and Coc Sau coal mine (in Vietnamese). Journal of Mining and Earth Sciences. 59, 1 (Feb, 2018).