02930nam 22005655 450 991089798650332120241019125733.0981-9780-82-910.1007/978-981-97-8082-2(MiAaPQ)EBC31733708(Au-PeEL)EBL31733708(CKB)36378909300041(DE-He213)978-981-97-8082-2(EXLCZ)993637890930004120241019d2024 u| 0engurcnu||||||||txtrdacontentcrdamediacrrdacarrierTheory and Method of Automatically Formed Roadway in Underground Mining /by Qi Wang, Bei Jiang, Zhenhua Jiang1st ed. 2024.Singapore :Springer Nature Singapore :Imprint: Springer,2024.1 online resource (162 pages)981-9780-81-0 Introduction -- Mining Theory of Automatically Formed Roadway (AFR) -- AFR Mining Method and Key Technologies -- The AFR with Shallow Buried Depth -- Model Test System of AFR Mining Method -- Design Principle of Key Parameters -- Summary and Prospect of AFR Mining Method.This book investigates in detail the theory and method of automatically formed mining roadway (AFR). The AFR method utilizes mining pressure and broken expansion characteristics of the collapsed rock mass in the gob to automatically form roadways, which changes the traditional “long cantilever beam” to “short cantilever beam” structure, and eliminate roadway excavation and coal pillar reserve. Key technologies are developed under the guidance of the “equilibrium mining” theory, such as in situ drilling and zoning technology, roof directional presplitting technology, high prestressed constant-resistance support technology, and gangue blocking support technology. The mining technologies and methods are successfully applied to a large number of coal mines of different geological conditions. The book is intended for both researchers and practitioners working in the mining, civil, and geological engineering fields.Geotechnical engineeringEngineering geologyGeologyGeotechnical Engineering and Applied Earth SciencesGeoengineeringGeologyGeotechnical engineering.Engineering geology.Geology.Geotechnical Engineering and Applied Earth Sciences.Geoengineering.Geology.624.151Wang Qi646598Jiang Bei1075553Jiang Zhenhua1767062MiAaPQMiAaPQMiAaPQBOOK9910897986503321Theory and Method of Automatically Formed Roadway in Underground Mining4211912UNINA