Cited by Compressed carbon dioxide energy storage in salt caverns holds promise for China's hard-to-abate sectors

Compressed carbon dioxide energy storage in salt caverns holds promise for China's hard-to-abate sectors DOI

et al.

Deleted Journal, Journal Year: 2024, Volume and Issue: unknown, P. 100065 - 100065

Published: Dec. 31, 2024

Compressed Air Energy Storage (CAES) is an effective technology for grid-scale peak shaving, while Carbon Capture Utilization and (CCUS) plays a crucial role in carbon reduction. As China strives to peaking emissions by 2030 achieve neutrality <styled-content style-type="number">2060</styled-content> faces significant challenges, especially the hard-to-abate sectors pose challenges. Building on principles of CAES CCUS, this paper introduces novel approach: Compressed (CCES), , which integrates CCUS. CCES uses salt caverns store compressed supercritical CO2 instead air. This study explores feasibility caverns, addressing stability, tightness, containment, site selection, capacity potential China. Key findings include: 1) CCES, advanced version CAES, offers doubles installed compared traditional combining benefits both CCUS benefits. 2) typical bedded formations can maintain stability integrity 100 years. 3) Optimal cavern depths storage range 800-<styled-content style-type="number">1500</styled-content> m, with minimum volume 25 × 104 m3 at least 300 MW. 4) better tightness air, methane (CH4), hydrogen (H2), interlayer permeability threshold ≤ 1.0 10–18 m2 adequate tightness. 5) Potential sites have been identified, preliminary estimates suggesting total 46.62-69.93 GW theoretical up 280 million tons China’s sectors.

Language: Английский

Numerical Simulation of Overburden Deformation Mechanism and Surface Settlement Characteristics Induced by Underground Coal Mining: A Case Study DOI

Qihang Li, Yunmin Wang, Jiawen Wang

et al.

Geological Journal, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 22, 2025

ABSTRACT Underground mining in mountainous regions presents a significant geological hazard, characterised by the occurrence of land subsidence and movement overlying strata. To aggrandise theory mine rock mechanics, we conducted systematic investigation into deformation failure mechanisms strata as well patterns surface regions. With method engineering mechanics theoretical analysis, supplemented universal distinct element code (UDEC) numerical simulation, status Songzao was simulated effectively. Herein, results revealed that nonlinearity field occurred during mining, evidenced an increase when coal approached seam roof. The curve underlying lower exhibits inverted trapezoid pattern, while upper overburden displays funnel‐shaped trend. Additionally, upward transmission displacement velocity significantly attenuated due to shielding effect exerted key stratum overburden, resulting greater spatial separation from critical fractures working face advanced 120 m, subsequently leading vertical cessation subsidence. value speed, however, exhibited gradual progressed. Due influence mountain landforms, convex landforms surpasses concave thereby expediting rate hazards.

Language: Английский

Citations

Effect of slope angle on fractured rock masses under combined influence of variable rainfall infiltration and excavation unloading DOI