Isbn: 9787502487379 - 深竖井建设/陈玉民 赵兴东 李洋洋 (1 resultados)

paperback. Condición: New. Paperback. Pub Date: 2021-04-01 Pages: 220 Language: Chinese Publisher: Metallurgical Industry Press Research on prevention and treatment provides effective methods and means. The existing hydrogeological data and accident causes of floor water inrush accidents show that more than 79.5% of floor water inrush accidents in coal mine stopes are related to structures such as floor faults. Faults and other structures can be regarded as geological defects in the surrounding rock of the stope. The e.…