The lined hard rock gas storage is the most promising energy storage mode at present because it is not limited by special geographical conditions and withstand higher pressure compared with salt caverns, abandoned mines and other gas storage. With the emergence of large-scale pressurized gas energy storage power stations, a single gas storage bank is bound to not meet the needs of energy storage, so the research of gas storage group is of practical significance. Three parallel 3D models of circular section tunnel gas storage group were established by MIDAS, which study the influence rules of three influencing factors on burial depth, tunnel diameter and spacing on the plastic area and deformation, and put forward the layout of circular tunnel gas storage group. The results show that the influence on the stability of the gas storage group is changed from large to small in order: burial depth, hole diameter and spacing. The buried depth is larger, the surrounding rock deformation is smaller; with the increase of the hole diameter, the surrounding rock deformation shows an increase trend; and with the increase of the spacing, the surrounding rock deformation tends to be stable. When the operating pressure is 10 MPa, the optimal distribution parameters of the circular section tunnel gas storage group: buried depth 300 m, hole diameter 15 m, and spacing 0.5D.
Zhou Xiaosong
,
Yan Lei
,
Huang Kangkang
,
Sun Gaobo
,
Liu Wei
. Study on Layout Parameters of Circular Section Tunnel Gas Storage[J]. Chinese Journal of Underground Space and Engineering, 2024
, 20(S1)
: 205
-212
.
DOI: 10.20174/j.JUSE.2024.S1.25
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