Underground gravity energy storage shaft and chamber spatial arrangement structure

By optimizing the design of the number, spacing, and shape of the heavy block storage chamber group, the transportation chamber group, and the connecting section chamber, the problem of the difficulty in long-term stable operation of the underground gravity energy storage well shaft and chamber layout scheme in the existing technology has been solved, and safe and stable operation under the conditions of ground stress and surrounding rock excavation disturbance has been achieved.

CN223577988UActive Publication Date: 2025-11-21NORTH CHINA POWER ENG
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Patent Information

Application Number
CN202520157932.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-23
Publication Date
2025-11-21
Estimated Expiration
2035-01-23

AI Technical Summary

Technical Problem

Existing technologies fail to adequately consider the stress distribution in underground spaces, the interaction between the heavy block storage chamber group and the hoisting shaft, and the disturbance and damage to the surrounding rock caused by underground space excavation. As a result, the underground gravity energy storage well and chamber layout schemes are difficult to maintain long-term safe and stable operation under the conditions of ground stress, surrounding rock excavation disturbance, and cyclic load disturbance of the energy storage heavy blocks.

Method used

An underground gravity energy storage well and chamber spatial layout structure was designed, including a vertical well, a group of heavy block storage chambers, a group of heavy block transportation chambers, and connecting chambers. The number, spacing, shape, and size of the chambers were optimized, and a straight-walled semi-circular arched chamber was adopted. The design was optimized by monitoring stress distribution to reduce stress concentration in the surrounding rock.

Benefits of technology

It has achieved long-term safe and stable maintenance of vertical shafts at a lower cost and with less difficulty, balancing the long-term stability of the chamber with the construction cost, reducing stress concentration in the surrounding rock, and improving energy storage, transportation and storage capacity.

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Abstract

The utility model discloses an underground gravity energy storage shaft and chamber spatial arrangement structure. The underground gravity energy storage shaft and chamber spatial arrangement structure comprises a vertical shaft; a weight block storage chamber group; the weight block storage chamber groups are arranged on the two sides of the vertical shaft with the vertical shaft as the symmetry axis, and the weight block storage chamber group on each side comprises five weight block storage chambers arranged in parallel. The weight block transportation chamber group is used for transporting weight blocks among the weight block storage chambers; the weight block transportation chamber group comprises four parallel weight block transportation chambers, and the weight block transportation chambers are perpendicular to the weight block storage chambers; the head end and the tail end of the weight block transportation chamber group on each side of the vertical shaft are respectively connected with a weight block transportation chamber; and the connecting section chamber is used for connecting the weight block transportation chamber close to the side of the vertical shaft with the vertical shaft. According to the scheme, the difficulty and cost of excavation construction and maintenance of the chamber can be reduced while the requirements for gravity energy storage transportation and storage capacity can be well met.
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