Isbn: 9787562968382 - 煤矿深立井马头门围岩稳定性研究及其控制技术 (1 risultati)

paperback. Condizione: New. Language:Chinese.Paperback. Pub Date: 2024-01 Publisher: Wuhan University of Technology Press: As the deep shaft gate is located at the throat of the mine and has a large design cross-sectional area. the surrounding rock is repeatedly disturbed during the construction process. Therefore. the phenomenon of deep shaft gate damage occurs from time to time. seriously affecting the stability of the surrounding rock and the safety of the supporting structure. In view of the above technical difficul.…