Bài viết đề xuất phương pháp xác định thời gian làm việc hiệu quả của chu kỳ sản xuất lò chợ thực tế dựa trên từng công đoạn thành phần. Từ đó đánh giá ảnh hưởng của thời gian làm việc hiệu quả đến sản lượng khai thác lò chợ cơ giới hóa, có tính toán trong điều kiện cụ thể tại vỉa 11, mỏ than Hà Lầm. | Journal of Mining and Earth Sciences Vol. 61 Issue 4 2020 95 - 101 95 Assessment of the effective working time on the mining output of the mechanized longwall coal seam 11 in Ha Lam coal mine Hung Phi Nguyen 1 Tung Manh Bui 1 Dung Tien Thai Vu 1 Hanh My Thi Nguyen2 1 Faculty of Mining Hanoi University of Mining and Geology Vietnam 2 Publishing Office Hanoi University of Mining and Geology Vietnam ARTICLE INFO ABSTRACT Article history The mechanizetion of Ha Lam coal seam 11 was designed with mining Received 18th May 2020 output of tous per year. In fact due to the negative impact of Accepted 13rd June 2020 geological conditions as well as the irrationality of the initial production Available online 31st Aug. 2020 organization the mining output of the longwall is not reached according Keywords to the designed capacity. The paper proposes a method to determine the Daily output 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 Effective working time mean flow rate of the mining stream is considered as a directional factor Ha Lam of the linear function describing the relation between the daily output and Longwall faces the effective mining in the longwall face. This relation is also considered Production process. 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. Copyright 2020 Hanoi University of Mining and Geology. All rights reserved. _ Corresponding author E - mail nguyenphihung@ DOI 4 .10 96 Tạp chí Khoa học Kỹ thuật Mỏ - Địa chất Tập 61 Kỳ 4 2020 95 - 101 Đánh giá thời gian làm việc hiệu quả tới sản lượng lò chợ cơ giới hóa vỉa 11 mỏ than Hà Lầm Nguyễn Phi Hùng 1 Bùi Mạnh Tùng 1 Vũ Thái Tiến Dũng 1 Nguyễn Thị Mỹ .
