Tunnel cross-section: 5.5 × 6m
Gradient: level tunnel
Equipment: 1 set of ZWY180 crawler mucking loader, 3 sets of ZWY220 crawler mucking loaders.

Advantages:
1. The crawler mucking loader is equipped with high-pressure spraying device to clean dust and prevent explosion.
2. Scraper conveyor is used to transship the slag.
3. It can work for a long time with the hydraulic oil temperature keeping normal.
4. It can work in tunnels with certain gradient.