Advanced monitoring device for whole-process deformation curve of surrounding rock of tunnel excavation and implementation method thereof

An advanced monitoring device for deformation curve of a surrounding rock during tunnel excavation, comprising:

• the surrounding rock (1),
• an excavation tunnel (2) opened in the surrounding rock (1),
• a drilling hole (3) provided in the surrounding rock (1) and connected to the excavation tunnel (2), and is disposed at one side with a drilling hole outer port sealing body (301),
• a grouting pipe (302) and a steel pipe (4) disposed in the drilling hole (3), a steel pipe optical fiber slot (402) and a steel pipe embedded optical fiber entry hole (403) opened on the outer surface of the steel pipe (4), a steel pipe outer end sealing body (401) is provided at one end of the steel pipe (4), and a steel pipe inner plug (404) is provided at the other end of the steel pipe (4),
• a steel pipe embedded optical fiber (5) encapsulated in the steel pipe optical fiber slot (402), the steel pipe embedded optical fiber (5) is led out of both ends of the steel pipe (4),
• at least one cathetometer (6) disposed in the steel pipe (4), the cathetometer (6) is connected in series by cathetometer optical fibers (601), and is fixed to the steel pipe inner plug (404) at the inner end of the steel pipe (4) by a cathetometer securing cable (7), and
• a cathetometer pipet (602) connected to the cathetometer (6) and the cathetometer optical fiber (601) by the cathetometer securing cable (7).