埋地保温管道防腐蚀保温层存在的问题主要为：防腐蚀保温层破损、黏结失效以及防水帽破损。通过室内试验筛选出了纤维增强型的防腐蚀修复材料，设计了“黏弹体（纤维增强型）+聚氨酯泡沫塑料（现场发泡或保温瓦块）+外防护层（压敏胶带或电热熔套）”修复结构，并已在现场应用。结果表明，该修复结构的修复效果良好。

Damage and bonding failure of anti-corrosion and thermal insulation coating, and damage of waterproof cap are the main problems of anti-corrosion and thermal insulation coating for buried thermal insulation pipeline. Fiber-reinforced anti-corrosion repair materials were screened through laboratory tests. A repair structure of "viscoelastic tape (fiber reinforced type) + polyurethane foam (on-site foaming or insulation tile) + outer protective layer (pressure-sensitive adhesive tape or electro welding sleeve)" was designed and used in field. The results show that the repair structure exhibited good effect.