Does the subject want to ask, "Why does jumping into concrete sink to the bottom?" Weak foundation, concrete material problems and improper operation.

1, the foundation is not firm: the bearing capacity of the foundation is not enough to support the weight of the bump, which leads to the sinking phenomenon. Strengthen the foundation, such as increasing the earthwork volume and improving the bearing capacity of the foundation.

2. Concrete material problem: the strength of concrete is not enough to resist the pressure of trampoline, which leads to sinking. Use high-grade high-quality concrete to ensure its strength is enough to support trampoline.

3. Improper operation: The driver operates the car in an incorrect way, such as too fast and turning sharply, which leads to sinking. Train drivers to understand the correct operation methods and avoid sinking due to improper operation.