What are the key issues to be aware of when constructing U-shaped channel molding machines? Here are a few points:

The U-shaped groove forming mechanism is cleaned at the cemented joint before缝，coated with a layer of cement paste, and the joints are constructed using 1:2.5 expanded cement mortar.

2. Channel-side soil retention requires that the U-shaped groove molding machine produce particles no larger than 20cm, with uniform density and flatness.

3. According to design specifications, a gantry pile is set every 30 meters, aligned with the shape of the constructed channel, mimicking the channel type of the constructed U-shaped panels, and meticulously refining the channel.

4. During the lining process, lay 3-4 cm of 75# cement mortar at the bottom of the board, with a width of no less than 15 cm, and joints in both directions measuring 2.0-2.5 cm wide.