Tunnel secondary lining pre-embedded pressure sensing network structure and monitoring method thereof

Abstract

The invention discloses a tunnel secondary lining pre-embedded pressure sensing network structure. The tunnel secondary lining pre-embedded pressure sensing network structure comprises a cylindrical lead box, wherein taking the center of the lead box as a reference point, six leads of equal length are evenly drawn out of the lead box at equal included angles; tail ends of the leads are connected into a regular hexagon through connecting lines; front ends of the six leads are correspondingly connected with six interfaces which are evenly formed in the lead box respectively; three pressure sensors are connected to the six leads at intervals, namely, a pressure sensor is arranged on only one of every two adjacent leads; and a pressure sensor is arranged on only one segment of connecting linein every two adjacent segments of connecting lines on the connecting lines of the regular hexagon. A monitoring device which is matched with and can perform data communication with the cylindrical lead box is inserted into the cylindrical lead box. Meanwhile, the invention also provides a monitoring method using the structure. Pressure points are located accurately by a monitoring network; periodical tunnel health monitoring is realized; and an internal monitoring network is fed back through an external monitoring and receiving device.

Description

Technical field [0001] The invention relates to the field of pressure monitoring, in particular to a tunnel second lining embedded pressure sensing network structure and a monitoring method thereof. Background technique [0002] In recent years, with the rapid development of infrastructure construction such as subways and high-speed railways, tunnel construction in my country has entered a period of rapid development. The engineering geology and hydrogeology of the mountain through which the tunnel traverses are complex, and the construction technology of each section is different, which leads to cracks in the vault, cracks in the side walls, cavities in the vault, damage to the tree, tunnel leakage, and surrounding rock There are many health problems such as large deformation, and the culprit of many problems is tunnel cracking. Tunnel cracks further expand under pressure, leading to the loss of the integrity of the tunnel structure, and the intrusion of pressure water into the ...

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Problems solved by technology

[0003] Chinese patent CN105469582A discloses a tunnel pressure wave acquisition system and its data acquisition method, but this method is aimed at the pressure wave data acquisition method, and does not provide a specific monitoring method for the pressure change of the tunnel structure

[0004] Chinese patent 201620857051.0 discloses a new type of resistance strain earth pressure cell sensor, which does not implement an additional measurement network, and can only monitor individual points, and cannot realize network monitoring and pressure point positioning

[0005] Chinese patent application 201510330076.5 discloses a hydraulic embedding device and embedding method for the outer wall earth pressure cell, but the design of the external monitoring device has not been realized in this application

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