Method for monitoring convergence deformation of tunnels

A technology for converging deformation and tunneling, applied in the field of monitoring, can solve the problems of inability to automatically collect and collect data, the accuracy of data is not high, and the influence of lining thickness, etc., to achieve the effect of equipment occupying a small cross-sectional area of ​​the tunnel, simple method, and high-precision monitoring.

Inactive Publication Date: 2013-01-16
NANJING GEOT CIVIL ENG INSTR
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Problems solved by technology

[0003] The purpose of the present invention is to provide a tunnel convergence deformation monitoring method to solve the problems that the thickness of the lining

Method used

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  • Method for monitoring convergence deformation of tunnels
  • Method for monitoring convergence deformation of tunnels
  • Method for monitoring convergence deformation of tunnels

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Embodiment Construction

[0018] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0019] Example figure 1 , 4 As shown in and 5, the present embodiment provides a tunnel convergence deformation monitoring method, which includes the following steps: 7 anchor points 4 are arranged along the lining ring direction on the selected tunnel cross-section, and these anchor points 4 are used as monitoring reference points ; Between every two adjacent anchor points 4, a rigid measuring installation arm 3 with a standard length and a sliding sleeve 5 are connected in turn, and an inclination sensor 2 is installed on the measuring installation arm 3, while the measurement installation A vibrating wire displacement gauge 1 is installed between the arm 3 and the sliding sleeve 5; then the two free ends of the system components formed above are hingedly connected to the anchor point hinge supports respectively, and then the anchor point...

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Abstract

The invention provides a method for monitoring convergence deformation of tunnels. A plurality of anchoring points are distributed annularly along a lining on a selected tunnel cross section and serve as monitoring reference points; every two of the anchoring points are connected through a rigid measuring installation arm with a standard length and a sliding sleeve successively, a tilter sensor is installed on the measuring installation arm, and a vibrating wire displacement meter is mounted between the measuring installation arm and the sliding sleeve; two free ends of a system component formed by the measuring installation arm, the sliding sleeve, and the tilter sensor and the vibrating wire displacement meter are anchored on two adjacent anchoring points on the lining through anchoring-point hinged support; and a plurality of the system components are formed in this way to be continuously catenated annularly till the unit number required by observation design is achieved. According to the method for monitoring convergence deformation of tunnels, the monitoring method is simple, the cost is low, the device occupies a small tunnel sectional area, and high-accuracy monitoring can be achieved.

Description

technical field [0001] The invention relates to a monitoring method, in particular to a tunnel convergence deformation monitoring method. Background technique [0002] With the acceleration of national infrastructure construction, the demand for safety monitoring of large-scale infrastructure projects such as subways, railways, highway tunnels, urban river-crossing tunnels, oil pipelines, and water conservancy culverts is increasing. At present, the safety monitoring of bridge and tunnel projects in the world mainly adopts the convergence deformation monitoring of the normal direction of the tunnel cross section, and the domestic preferred solution for the normal monitoring of the tunnel cross section is the mechanical steel rule convergence meter method (such as image 3 ), the steel ruler extensometer is a portable manual observation instrument with a fully mechanical structure. The structural principle is a linear superposition combination of a steel tape with mm graduati...

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Application Information

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IPC IPC(8): G01B21/32
Inventor 童西良
Owner NANJING GEOT CIVIL ENG INSTR
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