Relevant professionals for the river pile arrangement project carefully surveyed the actual situation on site, understood the characteristics of the project, the construction procedures, and the relationship between this stage and subsequent projects, so as to prepare for the immediate start of construction work after entering the site.

1. Construction technology of river wooden piles: Construction preparation → Positioning and setting out → Piling → Bamboo rafts → Building earthwork → Earth bag maintenance → Pumping → Reinforcement and other links. Of course, depending on the specific situation, the construction sequence of some of the processes must be Make appropriate adjustments.

2. Preliminary preparation work for river wooden piles

1. Do the necessary basic material testing and collect: The construction area was measured on site. The river channel is about 8 meters wide, the water depth is about 2.0 meters, and the river water velocity is about 1m\/s. We choose double rows of φ20 round wooden piles based on the actual situation. For support, 3-compound soil is used in the center and bagged to fill it to build a cofferdam. The top of the weir is 3m wide and the slope slope is 1:2.5.

2. Arrange a strong project leadership team and construction team: This section of the cofferdam is constructed on the water surface, and there is a risk of overturning if the operation is not careful. Therefore, high requirements are placed on the on-site management and construction operations of the project, and the cofferdam must be constructed by rich and personnel with management experience.

3. Preparation of necessary materials and mechanical equipment for river wooden piles: different underwater soil qualities, earth filling methods, and requirements are different. There must be corresponding excavation equipment, transportation equipment and materials necessary for the cofferdam. It is recommended to choose 1 One cubic long-arm excavator, one 1 cubic excavator, one 0.6 cubic excavator and 5 dump trucks cooperate to complete the tasks of earthwork loading, filling, pile driving, and cofferdam removal. Prepare wooden piles in advance ,sack.