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As an important means of energy storage project, salt cavern storage will cause the cavern to contract due to the fluctuation of injection and extraction pressures, which in turn can lead to surface subsidence. Numerical simulation analysis has been conducted on the main influencing factors of surface subsidence of double cavity under different injection and extraction cycles, and it has been found that reducing the injection and extraction cycle can slow down the trend of surface subsidence. An analysis of the probability of cavern failure in the operation of a salt cavern storage with a 60 d injection and extraction cycle has been carried out. When the pressure fluctuation of the storage exceeds 1 MPa, the probability of cavern failure will exceed 20% after 30 a. Therefore, when designing the operating conditions of salt cavern, it is necessary to consider the impact of pressure fluctuations on surface subsidence and control the fluctuation range of pressure according to the design life of the storage.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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