Abstract:
Against the backdrop of China’s carbon peaking and carbon neutrality goals and the growing demand for critical minerals, this paper systematically reviews domestic and international literature and engineering case studies. Drawing on the “Blue Mining” concept proposed by the Langefeld team (Member of the German Academy of Engineering), it adopts a “planning-upfront” perspective to synthesize the key technology portfolio, governance pathways, and full life-cycle management essentials for extending mines from single-purpose extraction sites to multifunctional infrastructure. Centered on four guiding principles—energy, ergonomics, water resources, and circularity—the paper summarizes the coordinated planning process and key constraints across site selection, construction, operation, closure, and repurposing. During the resource development stage, the review emphasizes energy-efficiency improvement and clean energy supply, and synthesizes cascaded deep geothermal utilization, quality-based segregation of mine water with staged treatment and reuse, solid-waste valorization, and a “source–grid–load–storage” coordinated green energy system. It also highlights the roles of ecological corridors and environmental monitoring in early warning and coordinated response to compound risks involving fugitive dust, wastewater, stormwater and flooding, and noise and vibration. For the closure stage, the paper outlines representative repurposing directions—such as coordinated containment/valorization of bulk solid wastes, mine-based pumped-hydro energy storage in abandoned mines, underground laboratories, and deep underground agriculture—and discusses the boundary conditions for using mine space as an asset for energy and hydrological regulation and as a platform for scientific research and industrial functions. To improve comparability across mine types and regions, the paper further distills an analytical framework for multi-objective coordination based on integrated “energy–water–materials–carbon” indicators, an MRV (monitoring–reporting–verification) closed loop, and OT/IT-integrated data support. It also summarizes institutional elements including unified permitting, standard systems, third-party verification, green finance mechanisms, public information disclosure, and long-term operation and maintenance funds. Constrained by differences in case-study definitions and regional heterogeneity, the emissions-reduction, cost, and resilience benefits of these pathways still require quantitative modeling, standardized assessment, and demonstration validation tailored to specific commodities, locations, and engineering conditions. By optimizing staged configuration and risk management, predefining post-closure uses and revenue channels, and reshaping the investment payback curve, the approach can enable a closed-loop transition from “extraction–depletion–sealing” to “extraction–regulation/storage–regeneration.”