Publicado por China University of Mining and Technology Press, 2018
ISBN 10: 7564642491 ISBN 13: 9787564642495
Idioma: Chino
Librería: liu xing, Nanjing, JS, China
EUR 74,61
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Añadir al carritopaperback. Condición: New. Paperback. Pub Date: 2018-12-01 Pages: 208 Language: Chinese Publisher: China University of Mining and Technology Press Xinjiang. as my country's fourteenth billion-ton coal base. has extensively thick coal seams in the area.?Research on the evolution of overlying strata structure and its control mechanism under repeated mining of extremely thick coal seams focuses on the evolution of overlying strata structure and its stability control under the conditions of large-scale mining space expansi.