Assessment of the effective working time on the mining output of the mechanized longwall (coal seam 11) in Ha Lam coal mine

  • Affiliations:

    1 Faculty of Mining, Hanoi University of Mining and Geology, Vietnam
    2 Publishing Office, Hanoi University of Mining and Geology, Vietnam

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  • Received: 18th-May-2020
  • Revised: 13th-June-2020
  • Accepted: 31st-Aug-2020
  • Online: 31st-Aug-2020
Pages: 95 - 101
Views: 1867
Downloads: 1056
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Abstract:

The mechanizetion of Ha Lam coal seam 11 was designed with mining output of 600.000 tous per year. In fact, due to the negative impact of geological conditions as well as the irrationality of the initial production organization, the mining output of the longwall is not reached according to the designed capacity. The paper proposes a method to determine the effective working time of the actual longwall based on each component stage. For specific conditions at coal seam 11 in Ha Lam coal mine. The mean flow rate of the mining stream is considered as a directional factor of the linear function describing the relation between the daily output and the effective mining in the longwall face. This relation is also considered as motivation in particular for supervisory personnel, as it shows advantages resulting from elongation of this time, as well as it shows possible losses of the daily output in a case when the effective working time is given longwall face was shortened.

How to Cite
Nguyen, H.Phi, Bui, T.Manh, Vu, D.Tien Thai and Nguyen, H.My Thi 2020. Assessment of the effective working time on the mining output of the mechanized longwall (coal seam 11) in Ha Lam coal mine (in Vietnamese). Journal of Mining and Earth Sciences. 61, 4 (Aug, 2020), 95-101. DOI:https://doi.org/10.46326/JMES.2020.61(4).10.
References

Cai Zhuangyang, Zhou Wei, (2014). Reliability assessment method in underground mining system. China technology of mining university, China, 26-37.

Nguyễn Văn Dũng, Vũ Thái Tiến Dũng, Đào Văn Chi, Bùi Mạnh Tùng, Nguyễn Phi Hùng, Vũ Tiến Quang, Đinh Thị Thanh Nhàn, (2019). Xây dựng mô hình điểm nút xác định các yếu tố ảnh hưởng và phương pháp tính thời gian làm việc hiệu quả trong cấu trúc tổ chức sản xuất lò chợ cơ giới hóa. Tạp chí Khoa học Kỹ thuật Mỏ - Địa chất 60(5), 31 - 37.

Nông Việt Hùng, (2018). Nghiên cứu hoàn thiện một số thông số công nghệ khai thác lò chợ cơ giới hóa đồng bộ hạ trần than ở vỉa dày, dốc thoải và nghiêng tại các mỏ hầm lò vùng Quảng Ninh. Luận án tiến sĩ kỹ thuật. Trường Đại học Mỏ - Địa chất, 105.

Snopkowski, R., Napieraj, A., (2012). Method of the production cycle duration time modeling within hard coal longwall faces. Arch. Min. Sci. 57(3), 573-585.

Snopkowski, R., Sukiennik, M., (2012). Selection of the longwall face crew with respect to stochastic character of the production process - part 1 - procedural description. Arch. Min. Sci. 57(4), 107104-11088.

Snopkowski, R., Sukiennik, M., (2013). Longwall face crew selection with respect to stochastic character of the production process - part 2 - calculation example. Arch. Min. Sci. 58(1), 227-240.

Vayenas, N., Yurij, G., (2007). Using Gen Rel for reliability assessment of mining equipment. Journal of Quality in Maintenance Engineering. Emerald 13(1).