What will happen to the open caisson construction of the river-crossing bridge?

The most common problems in open caisson construction:

1, the rock height difference is too large;

2. When encountering a large boulder, it is very hard and cannot be dug and shot;

3. There is a great difference in the hardness of the rocks inside the open caisson, which makes the open caisson naturally inclined and difficult to correct;

4. Pay attention to the strength of the open caisson foot, which is easy to crack;

5. The self-weight of open caisson is too light, and the friction of surrounding soil is too large, which makes it difficult to sink;

6, open caisson in the process of sinking, it is easy to produce axis deviation, pay attention to rectification.