Detection method for circulating gas injection of double-membrane structure in underground rock cavern gas storage cavity

The invention discloses a method for detecting circulating gas injection of a double-membrane structure in an underground rock cavern gas storage cavity. The method comprises the following steps: 1, constructing the double-membrane structure on a surrounding rock body; 2, performing gas injection detection between the inner film layer and the outer film layer; and thirdly, compressed air in the cavity is injected and detected. According to the invention, detection is carried out in gas injection and deflation cycle work of the cavity of the double-membrane structure, and damage to the double-membrane structure is reduced, so that the durability and safety of the double-membrane sealing structure are improved. 本发明公开了一种地下岩穴储气库腔体内双膜结构循环注气的检测方法，该方法包括以下步骤：一、围岩体上双膜结构的施工；二、内膜层和外膜层之间注气检测；三、腔体内压缩空气的注入及检测。本发明在双膜结构腔体注气、放气循环工作中进行检测，减少双膜结构破坏，从而提高了双膜密封结构的耐久性和安全性。