Under an average inner gas pressure of 6 MPa, which is designed for a salt cavern located at 1000 m to 1340 m depth, the surplus storage capability of the cavern will remain 27.5% of the original capability after 80 designed operation years.

• 在设计平均天然气内压6MPa条件下,当达到设计使用年限(80a)时,洞室的剩余存储能力仍保有初始存储能力的27 5%25。