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

Abstract

The invention discloses a remote smart monitoring and three-dimensional early warning method and system for the deformation stability of a deep foundation pit, wherein a three-dimensional numerical model of excavation deformation stability of the deep foundation pit in the construction area is established based on the physical and mechanics parameters of the rock soil of the deep foundation pit, the hydrogeology and engineering geology conditions of the deep foundation pit area and the FLAC3D technology; and a three-dimensional visual safety early warning platform of the deep foundation pit is established based on the VTK commercial software system. Real-time monitoring data including sedimentation and horizontal displacement of the slope top and the retaining pile of the deep foundation pit and the change of the pore water pressure of soil surrounding the retaining pile are acquired through a gradiograph, a hydrostatic level and a pore water pressure gauge, and transmitted to a user computer; the actual measure sedimentation, displacement and pore water pressure data obtained are analyzed and compared with model thresholds by the three-dimensional numerical model of excavation deformation stability of the deep foundation pit, which is displayed through the three-dimensional visual safety early warning platform of the deep foundation pit, and grading safety early warning is performed on the alert-exceeding parameters; all early warning information is sent to the mobile phone of the related personnel; and simultaneously, the early warning information is transmitted back to an audible and visual alarm mounted in the working plane of the construction site for giving out an audible and visual alarm.

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 deformation stability of deep foundation pits; The early warning method also involves remote intelligent monitoring of deep foundation pit deformation stability 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, along with more and more construction projects of deep foundation pits, the instability of deep foundation pits, frequent accidents of water and mud inrush, and the deformation stability of deep foundation pits are increasing. It has aroused people's attention that the technical regulations for foundation pit support in the industry have certain limitations when encountering special hydrogeologica...

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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 deep foundation pit deformation stability. According to domestic literature, very few roads, minerals, submarine tunnels, and railway projects in China have built databases, multi-information early warnings and safety measures for tunnel construction. management, but so far, there is no literature on the remote intelligent monitoring and three-dimensional early warning method of deep foundation pit deformation stability, which integrates the three-dimensional numerical model of deep foundation pit excavation deformation stability and the deep foundation pit three-dimensional visualization security early warning platform. to report

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