On-line monitoring device and method for pore water pressure under underground structure bottom plate

Abstract

The invention discloses an on-line monitoring device for pore water pressure under an underground structure bottom plate. The on-line monitoring device comprises a plurality of pore water pressure sensors, a pore water pressure data acquisition instrument and a monitoring cloud platform, wherein the pore water pressure sensors are buried under the underground structure bottom plate, and the pore water pressure data acquisition instrument and the monitoring cloud platform are installed on the construction site. Each pore water pressure sensor is internally provided with an RFID radio frequency chip used for determining the burying position of the pore water pressure sensor. The pore water pressure sensors are in wireless connection with the pore water pressure data acquisition instrument which is in wireless connection with the monitoring cloud platform. The invention further discloses an on-line monitoring method for the pore water pressure under the underground structure bottom plate. By means of the on-line monitoring device and method for the pore water pressure under the underground structure bottom plate, the water pressure numerical value under the underground structure bottom plate is automatically monitored in real time, and accurate tracing can be conducted on monitoring points afterwards.

Description

technical field [0001] The invention belongs to the technical field of underground structure monitoring, and in particular relates to an online monitoring device and a monitoring method for pore water pressure under the floor of an underground structure. Background technique [0002] In order to ensure the safety of underground engineering construction and the safety of the surrounding environment, in the construction of underground engineering, due to the complex influence of engineering hydrogeological conditions, load conditions, material conditions, surrounding environment, construction technology or other external factors, there are often differences between the actual situation and the theory of the project. , it is necessary to conduct on-site construction monitoring in a planned way under the guidance of theoretical analysis to ensure safety and reduce unnecessary losses. Usually, the objectives of underground engineering construction monitoring are: to discover unst...

AI Technical Summary

Problems solved by technology

The surface water, groundwater and construction water around the foundation pit of underground engineering flow in and seep into the basement floor. If the accumulated groundwater is difficult to discharge, when the buoyancy exceeds a certain limit, it will have an adverse effect on the structure. Generally, it is easy to cause floor uplift, Cracks, and damage the corresponding main structure such as beams and columns, affecting the safety of the main structure

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