Theory engineering application multi hole von yan kun (1 Ergebnisse)

paperback. Zustand: New. Language:Chinese.Paperback. Pub Date: 2023-12 Publisher: China University of Mining and Technology Press This book aims to solve the problems of difficult extraction and poor permeability enhancement of high-gas soft coal seams by combining similar simulation tests. theoretical analysis and on-site industrial tests. It analyzes the compaction effect of explosive column explosion on soft coal seams and obtains the law of explosion-induced cracking and displacement of coal bodies under the indu. …