# Maintenance strategies and life-cycle cost analysis of inspection robots in metro tunnels

> Research article (Tunnelling and Underground Space Technology, 2023) · cited 14× · AI/ML

**Wikidata**: [openalex:W4380925827](https://www.wikidata.org/wiki/openalex:W4380925827)  
**Source**: https://4ort.xyz/entity/maintenance-strategies-and-life-cycle-cost-analysis-of-inspection-robots-in-metro-tunnels