Trench and shoring helps walls from collapsing by bracing trenches for properly securing the walls of a trench. To prevent collapse and cave-ins. There can be different methods to properly shoring up a trench when digging trenching on the job. Trench shields and trench shoring are very important and different. Trench shoring materials are used in a variety of ways. Trench shields are also know as trench boxes where workers are protected while they're working inside a trench.