Dynamic monitoring system and monitoring method for ground surface settlement of portal section in tunnel construction process

Abstract

The invention relates to a dynamic monitoring system and method for ground surface settlement of a portal section in a tunnel construction process. The dynamic monitoring system comprises a ground surface settlement monitoring network, a main station and an intelligent mobile terminal; the ground surface settlement monitoring network, the intelligent mobile terminal and the main station are in communication connection through a 5G public network; the ground surface settlement monitoring network comprises a monitoring network host and a photoelectric height gauge assembly, wherein the monitoring network host and the photoelectric height gauge assembly are fixedly arranged at set positions of a tunnel entrance and exit monitoring section ground surface and are connected through micro-power wireless communication; when the ground surface settlement monitoring network works, the monitoring net host emits horizontal linear laser in a set period, the horizontal linear laser irradiates the photoelectric height gauge assembly, the photoelectric height gauge assembly detects the irradiation position of the horizontal linear laser, and automatic collection of ground surface settlement data of the portal section in the tunnel construction process is achieved; and ground surface settlement data automatically collected by the ground surface settlement monitoring network is transmitted to the main station through the 5G public communication network, and dynamic monitoring of the ground surface settlement of the portal section in the tunnel construction process is achieved through data calculation and processing.

Description

technical field [0001] The invention relates to the technical field of safety monitoring in the construction process of water conservancy engineering tunnels, in particular to a dynamic monitoring system and monitoring method for surface subsidence at the entrance section of the tunnel construction process. Background technique [0002] During the construction of water conservancy project tunnels, it is necessary to dynamically monitor the internal and external conditions of the tunnel to ensure the safety of the water conservancy project tunnel construction process; the monitoring content includes surrounding rock lithology, fault distribution, groundwater conditions, working face stability, and support stability properties, surface settlement of tunnel entrance and construction area, stability of tunnel face and slope, surface water infiltration, etc., so the monitoring workload is very huge; The amount is huge, which can only be carried out in a certain period, and real-t...

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Problems solved by technology

[0002] During the construction of water conservancy project tunnels, it is necessary to dynamically monitor the internal and external conditions of the tunnel to ensure the safety of the water conservancy project tunnel construction process; the monitoring content includes surrounding rock lithology, fault distribution, groundwater conditions, working face stability, and support stability property, tunnel entrance and surface settlement in the construction area, tunnel face slope stability, surface water infiltration, etc., so the monitoring workload is very huge; The amount is huge, which can only be carried out in a certain period, and real-time dynamic monitoring cannot be achieved, so it is impossible to grasp the conditions inside and outside the tunnel in real time, and there are still certain hidden safety hazards; therefore, how to replace manual work with modern technical means to monitor the tunnel construction process of water conservancy projects All-round, real-time dynamic safety monitoring is an important problem to be solved in the construction of water conservancy project tunnels in the future

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