Deep underground foundation pit multi-field monitoring device

Abstract

The invention discloses a deep underground foundation pit multi-field monitoring device. The device comprises a plurality of supporting piles and a monitoring device, the supporting piles are installed in a foundation pit, the monitoring device comprises a plurality of temperature and humidity optical fiber sensors, a plurality of optical couplers, an optical circulator, a laser generator, an optical detector and a processor, and the laser generator is connected with one end of the optical circulator; and one end of the optical circulator is connected with the optical coupler, the other end of the optical circulator is connected with the optical detector, the optical detector is connected with the processor, the plurality of optical couplers are respectively connected with the temperature and humidity optical fiber sensors, and the plurality of optical couplers are connected in parallel. According to the arrangement, temperature and humidity signals in the foundation pit can be quickly and effectively transmitted to the processor to be monitored, the optical couplers are connected in parallel, each optical coupler is connected with one temperature and humidity optical fiber sensor, temperature and humidity of multiple positions in the foundation pit can be monitored, and comprehensiveness and accuracy of data are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of multi-field monitoring in underground space construction, in particular to a multi-field monitoring device for deep underground foundation pits. Background technique [0002] Deep underground space has the characteristics of large buried depth, high water and soil pressure, and difficult development, but it is also easy to realize reasonable engineering planning, which is conducive to the linearization of urban linear space. Therefore, with the development of the construction industry, the use of underground space is showing a momentum of vigorous development. The number of projects such as urban underground squares is increasing, and the amount of underground construction is also increasing. [0003] In the process of deep underground space construction, it is necessary to monitor the displacement or stress response of the underground structure, such as foundation pit deformation uplift, support system d...

AI Technical Summary

Problems solved by technology

However, the method of regular on-site measurement cannot fully reflect the deformation law, and there is a lack of comprehensive analysis of the shade effect and heat island effect in the underground environment, so it is impossible to accurately predict and evaluate potential risks during the construction process.

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