ISBN: 9787502091415 - 开滦矿区工作面煤与瓦斯突出预测新技术及应用 (1 Ergebnisse)

paperback. Zustand: New. Paperback.Pub Date:2022-02-01 Pages:124 Language:Chinese Publisher:Coal Industry Press This book proposes a new method to determine the sensitive indicators of coal and gas outburst prediction in the face. and gives the calculation of the allowable footage of the outburst coal seam excavation face Methods. systematically introduced a variety of special drilling cuttings collection devices. information management technology of coal and gas outburst prediction data in working face. expounded th.…