Tunnel deformation real-time monitoring method based on millimeter-wave radars

Abstract

The invention discloses a tunnel deformation real-time monitoring method based on millimeter-wave radars. The method includes the following steps of firstly, dividing sections, wherein a to-be-monitored section of a tunnel is divided into a section 1, a second 2 and the like until a section N, and each section is provided with a plurality of monitoring fracture surfaces; secondly, arranging radarbeacons, wherein the top of each monitoring fracture surface is provided with one vertical radar beacon, and each horizontal surface is provided with two opposite horizontal radar beacons; thirdly, arranging the radars, wherein the bottom of each section is provided with one vertical radar and meanwhile provided with one horizontal radar or a pair of opposite horizontal radars; and fourthly, conducting monitoring, wherein each vertical radar and each horizontal radar are connected with data collecting and transmitting instruments, the data collecting and transmitting instruments are wirelesslyconnected with a working station, the working station analyzes the radar monitoring data, and therefore the vault vertical displacement and clearance convergence value on each monitoring fracture surface are obtained. By means of the phase interferometry technology of the millimeter-wave radars, the real-time monitoring of settlement and convergence data of each fracture surface can be conveniently and rapidly realized.

Description

technical field [0001] The invention relates to the field of tunnel deformation monitoring. More specifically, the present invention relates to a real-time monitoring method for tunnel deformation based on millimeter wave radar. Background technique [0002] During the construction of mountain tunnels or shield tunnels, total stations are usually used for tunnel deformation monitoring, but the real-time deformation monitoring function of tunnels cannot be realized by using total stations. Influences such as manual reading errors. In view of the above shortcomings, in recent years, some people have gradually begun to try out the tunnel 3D laser scanning technology, and simultaneously developed a corresponding data processing platform, such as patent CN106930784A. The use of 3D laser scanning can quickly carry out non-contact measurement, and at the same time can carry out tunnel monitoring measurement to realize the function of dynamic monitoring. However, due to the influe...

AI Technical Summary

Problems solved by technology

The use of 3D laser scanning can quickly carry out non-contact measurement, and at the same time can carry out tunnel monitoring measurement to realize the function of dynamic monitoring. However, due to the influence of smoke, dust, noise, etc. in the tunnel, the measurement accuracy of 3D laser scanning cannot be guaranteed, and the scanning process The amount of data is too large, and sometimes it takes several hours to scan data transmission and processing, which cannot truly realize the real-time monitoring and early warning function of the tunnel

Therefore, in order to solve the problem of tunnel settlement and convergence deformation monitoring in harsh construction environments, a device and method with high penetrating power, high precision, and long-term and automatic monitoring are needed to solve the real-time monitoring that is difficult to achieve in the existing traditional measurement problems, realize high-precision collection of tunnel deformation data, real-time monitoring and early warning, provide timely deformation evidence for tunnel construction, and ensure tunnel construction safety

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