The original dam was damaged by ants or rats and then repaired with the method of drilling and grouting, which I saw when I was a child, but now I do not know what method is used to repair. The specific process is to use a drill to make a hole in the dam, and then fill it with mud or cement slurry to make the dam strong enough to resist flooding. A similar situation sometimes occurs in the human body, for example, after a certain age, especially in women, the vertebrae of the lumbar or thoracic vertebrae will become lax, like a dam damaged by ants, so there will be a hunchback, that is, an elderly round back. If you fall down accidentally, you may have a compression fracture, and the spine is like the beam of the human body, after the fracture, its support or can not, so there will be standing, sitting, walking pain, the traditional method is bed rest, for a person who was able to move freely, bed is really too uncomfortable, but also others to wait on, bringing great inconvenience to themselves and their families. Other than that, bed rest alone is a big problem. With the development of medicine, there is a hole in the vertebral body grouting, drilling a small eye to the problematic vertebral body, to establish a channel, the human body special cement – bone cement infusion into the vertebral body. The vertebral body then regains its strength and after a few hours it can move freely without having to think about urinating or defecating in bed and without much care from the family. This method can be used for all diseases that affect the strength of the spine, such as tumors, osteoporosis, fractures, etc.