Technical operation: How to dig a trench

[BONOVO]

1. Dig trenches according to requirements and adapt to local conditions

2. Pay attention to the direction of the marking line when digging trenches. Deep trenches should prevent landslides and slopes should be laid

3. Pay attention to safety. There is a risk of landslides if there is no slope on both sides

4. When digging pipeline trenches, you must pay attention to slopes. If you don’t know how to slope, you can also lay down steps layer by layer, so that even if there is a landslide, it is not so dangerous

5. After forming, it is OK to not collapse when constructing the pipeline. The shape of trenches is generally determined by the soil type, how deep to dig, and where to dig. V-shaped trenches should be dug for sandy soil to prevent landslides. For urban roads, the drainage network should be dug with retaining wall channel steel before digging (mostly trenches over 3 meters deep)

6. This trench looks very ordinary, and it is usually like this. But the trench is too straight and has no slope, which is easy to collapse, and it is more dangerous for people below. Maybe the local soil is hard, maybe it’s okay. If you dig such a trench, you must dig a slope on both sides, otherwise it will definitely collapse

Trenching methods

(1) Riding excavation: mainly used in open areas, the excavator is parked in the middle of the trench to be excavated, and the bucket digs between the two tracks.

(2) Along the edge: refers to a relatively narrow area, such as a clear water channel, the bucket only digs along one side of the track line (here the slope skills are required).

(3) Direct facing: mainly for the excavation of highway culvert trenches, which means that the excavator is parked at a 90-degree angle to the trench edge (it should be noted that when the trench is deep, the bucket cylinder may hit the trench edge)

In short, the operator needs to pay special attention to digging straight, the flatness of the slope, the control of the trench bottom, etc., and choose the appropriate trenching method. In fact, trenching is not a difficult task.

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