affiliation not provided to SSRN
metro operational safety, evaluation index system, safety system engineering, analytic hierarchy process, semi-quantitative safety evaluation table method
coalbed methane, Extraction efficiency, Graded particles, Two-Phase Flow, Viscous materials, Sealing Mechanism
underground roadway, high ground temperature, heat damage, thermal insulation material, thermal insulation effect
Coal bed methane, Fracture plugging, Solid-liquid two-phase, Visual verification, molecular simulation