Remote intelligent monitoring and three-dimensional early warning method and system for stress stability of deep foundation pit

Abstract

The invention establishes a three-dimensional numerical model for the excavation stress stability of a deep foundation pit in a construction area based on parameters including rock-soil physical mechanics parameters of the deep foundation pit, hydrogeology and engineering geology conditions of a deep foundation pit area, fender post design strength, specifications and dimensions, and the like as well as an FLAC3D technology, and establishes a deep foundation pit three-dimensional visual safety pre-warning platform on the basis of a VTK (Visualization Tool Kit) commercial software system. A method disclosed by the invention comprises the following steps of: acquiring horizontal displacement of a foundation pit slope crest and the fender posts, I steel support axial force and real-time monitoring data of soil pore water pressure around the fender posts through a gradient meter, an axial force meter and a pore water pressure meter, transmitting to a remote monitoring and data processing host, comparing real-time mechanics data with a model threshold value by using the three-dimensional numerical model for the excavation stress stability of the deep foundation pit, and displaying and performing graded safety early warning on warning-exceeding parameters through the deep foundation pit three-dimensional visual safety pre-warning platform; and transmitting all early warning information to mobile phones of relevant personnel, and transmitting early warning information to an audible-visual alarm installed on the working surface of a construction site for performing audible-visual alarming.

Description

technical field [0001] The invention belongs to the technical field of deep foundation pit construction engineering related to urban subway stations, high-rise building foundation excavation, etc., and is used for intelligent monitoring and safety warning of the stress stability of deep foundation pits; The three-dimensional early warning method also involves remote intelligent monitoring of the stress stability of deep foundation pits and a three-dimensional early warning system. Background technique [0002] With the expansion of the construction scale of urban subways and super high-rise buildings, there are more and more deep foundation pit construction projects. In the process of deep foundation pit construction, foundation pit instability, water and mud inrush accidents occur frequently, and the stress stability of foundation pits has attracted more and more attention from people in the industry. There are certain limitations in geological conditions and the environme...

AI Technical Summary

Problems solved by technology

[0003] At home and abroad, there are still few researches on remote intelligent monitoring and three-dimensional early warning methods for the stability of deep foundation pits. According to domestic literature, very few roads, minerals, submarine tunnels, and railway projects in China have built databases and multi-information early warnings for tunnel construction. and safety management, but so far, there has not been a remote intelligent monitoring and three-dimensional early warning method for deep foundation pit stress stability that integrates a three-dimensional numerical model of deep foundation pit excavation stress stability and a deep foundation pit three-dimensional visualization safety early warning platform. Literature report

Images