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Số 62, Kỳ 6, [12 - 2021] - Tiếng Anh

Degasification of methane for high methane-emitted coal seam at Mao Khe coal mine - Vinacomin by drilling long borehole

DOI:10.46326/JMES.2021.62(6).08

  • Cơ quan:

    1 Mao Khe Coal Company - Vinacomin, Quang Ninh, Vietnam
    2 Hanoi University of Mining and Geology, Hanoi, Vietnam

  • *Tác giả liên hệ:
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  • Nhận bài: 29-07-2021
  • Sửa xong: 02-11-2021
  • Chấp nhận: 30-11-2021
  • Ngày đăng: 31-12-2021
Trang: 58 - 63
Lượt xem: 6545
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Lượt tải: 1447
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★★★★★Yêu thích: 1.0, Số lượt: 144
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Tóm tắt:

This paper presents a technical solution for reducing methane gas concentration (degasification) caused by a high methane-emitted coal seam at Mao Khe coal mine - Vinacomin. The technique is implemented by drilling a long borehole from the footwall of the roadway into the coal seam and punching small holes along the borehole for gas release. A field study at the longwall level -150/-80 m at Seam 9 of Mao Khe coal mine shows that after the degasification, the gas concentration here is lowered to safety standards. The technique can be used for all coal seams ranked as Class II, Class III, and super-class regarding methane gas, minimizing the risk of methane combustion and explosion.

Trích dẫn
Duy Van Pham, Dung Tien Le và Son Anh Do, 2021. Degasification of methane for high methane-emitted coal seam at Mao Khe coal mine - Vinacomin by drilling long borehole, Tạp chí Khoa học kỹ thuật Mỏ - Địa chất, số 62, kỳ 6, tr. 58-63.
Tài liệu tham khảo

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