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Tunnel convergence deformation monitoring method and device thereof

A technology for converging deformation and monitoring devices, which is applied to measurement devices, instruments, etc., can solve problems such as large safety hazards, poor installation quality, and low success rate, and achieve the effects of improving measurement accuracy, improving completion quality, and simple structure

Inactive Publication Date: 2015-12-09
CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to provide a tunnel convergence deformation monitoring method and its device to solve the existing tunnel convergence deformation monitoring problems such as difficult operation, large safety hazards, slow speed, low success rate, poor installation quality, and vulnerability

Method used

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  • Tunnel convergence deformation monitoring method and device thereof
  • Tunnel convergence deformation monitoring method and device thereof
  • Tunnel convergence deformation monitoring method and device thereof

Examples

Experimental program
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Embodiment

[0032] Example: When using, such as Figure 4-5 As shown, a number of equidistant stepped holes are first set on the inner wall of the tunnel 14, wherein at least two stepped holes are placed on both sides of the tunnel 14, and at least one stepped hole is placed on the top of the tunnel 14 to form at least 3 triangular monitoring points; Then drill a matching anchor rod in each step hole and grout. The anchor rod is a stainless steel tapered threaded anchor rod 2, and its bottom end is fixedly connected to a rectangular or square base 1. The bottom surface of the base 1 is provided with Reflective coating 3, after the anchor rod is drilled into the tunnel 14, ensure that the bottom surface of the base 1 is flush with the inner wall of the tunnel 14; , the connection mode is a universal joint 8 connection; open the two controllable magnetic bases 4 on the same convergent gauge 12, and magnetically attach to the base 1 on two separate anchor rods respectively, and adjust the an...

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Abstract

The invention discloses a tunnel convergence deformation monitoring method. The method comprises steps of boring, measuring point mounting, convergence meter mounting, monitoring and recovery. The invention further discloses a monitoring device. The monitoring device comprises a reflection adsorption measuring point and a connection mechanism, wherein the reflection adsorption measuring point comprises a foundation of which a bottom face is provided with a reflection coating layer, the middle portion of the top end of the foundation is fixedly connected with a conic thread anchor pole, the connection mechanism comprises a magnetic seat, the top end of the magnetic seat is equipped with a column through thread, the top end of the column is fixedly connected with a universal joint, the other end of the universal joint is fixedly connected with a connection rod, and the tail end of the connection rod is fixedly connected with a circular ring. The tunnel convergence deformation monitoring method and the monitoring device have advantages of convenient operation, high precision, good safety performance, fast speed, short construction period, low cost and wide application scope.

Description

technical field [0001] The invention relates to the field of tunnel deformation monitoring, in particular to a tunnel convergence deformation monitoring method and a device thereof. Background technique [0002] Extensometer is an instrument widely used in the monitoring of convergence deformation after tunnel excavation. Usually, the convergence meter needs to cooperate with the convergence measuring points anchored around the tunnel to measure the relative displacement between two fixed points of the tunnel surrounding rock, so as to judge the deformation trend and stability of the surrounding rock. Typical installation methods for convergent gauges are as follows: figure 1 shown by figure 1 It can be seen that the convergent gauge comes with two hooks, one is a retractable steel ruler hook, and the other is a fixed hook installed at the other end of the convergent gauge. and the convergence measuring point C (the convergence measuring point is anchored in the rock mass...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/32
Inventor 彭浩周建军
Owner CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
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