Isbn: 9787564651305 - 全新正版图书 低朱建明史红邈解鹏雁陈绍杰中国矿业大学出版社9787564651305 软煤层煤矿开采研究本科及以上蔚蓝书店 (1 risultati)

paperback. Condizione: New. Paperback.Pub Date:2021-09-01 Pages:207 Language:Chinese Publisher:China University of Mining and Technology Press For the technical problems encountered. the research method combining field observation. laboratory test. theoretical analysis and numerical simulation calculation is used to summarize and propose the gas gushing law of low permeability coal seam. the deformation mechanism and supporting technology of surrounding rock in the roadway of soft coal seam. and the low permeability coa.…