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Device and method for monitoring vault settlement in tunnel construction

A technology for vault settlement and tunnel construction, which is applied in measuring devices, surveying and navigation, and electrical devices, etc., can solve problems such as inaccurate initial data, achieve convenient operation, simple data collection methods, and ensure construction safety.

Active Publication Date: 2019-07-12
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The inventor found that in actual engineering, the settlement monitoring points of the vault are arranged while the initial lining structure is being constructed, but due to the limitation of the operating space, the actual initial data collection time is often 1-3 days after the support is installed
Therefore, the initial data read after the deployment of monitoring points is inaccurate

Method used

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  • Device and method for monitoring vault settlement in tunnel construction
  • Device and method for monitoring vault settlement in tunnel construction
  • Device and method for monitoring vault settlement in tunnel construction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Specifically, such as figure 2 and image 3 As shown, a tunnel construction vault settlement monitoring device includes an inclinometer sensor 2-4, an inclinometer sensor wire 2-5, an inclinometer tube wire channel 2-6, an inclinometer tube 2-7 and a monitor. Wherein, the electric wire 2-5 of described inclinometer sensor is placed in electric wire channel 2-6, and the terminal 2-8 of described inclinometer sensor electric wire 2-5 is connected with the connection electric wire 3-8 in monitor, and is done well Waterproof treatment.

[0055] refer to image 3 As shown, the monitor is equipped with a USB interface, a jack and a built-in lithium battery, the jack 3-7 is connected with the connecting wire 3-8 with a plug, and the USB interface 3-5 can be connected with a computer for recording and storing data.

[0056] A power switch 3-4, a function button 3-6, an adjustment knob 3-3 and a display screen 3-2 are installed on the monitor.

[0057] There are 3 copper wi...

Embodiment 2

[0078] This implementation also provides a method for monitoring tunnel construction vault settlement using the above-mentioned device, including the following steps:

[0079] A. Use a drilling rig to drill holes forward above the excavation face to place the inclinometer tube 2-7; preferably, the inclinometer tube is 20m long, and further, the inclinometer tube wall is provided with Wire channel.

[0080] B. Set a sensor placement groove every 1m, install 20 inclinometer sensors 2-4 in the corresponding placement grooves of the inclinometer tube 2-7 respectively, and the inclinometer sensor and the inclinometer tube are tightly fixed;

[0081] C. The electric wires 2-5 of each inclinometer sensor are placed in the electric wire channel 2-6 of the corresponding inclinometer pipe wall;

[0082] D. Place the inclinometer tube equipped with the inclinometer sensor in the pre-drilled borehole, and place the tube mouth "positively and negatively", and place the sensor wire termina...

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Abstract

The invention relates to a device and a method for monitoring vault settlement in tunnel construction. A monitoring device part mainly comprises an inclination measuring sensor, an inclination measuring pipe and a monitor, wherein the inclination measuring sensor is arranged in the inclination measuring pipe and is connected with the monitor by an electric wire. The principle of the monitoring method is that the deformation of the inclination measuring pipe is caused by the vault settlement, the inclination of the inclination measuring sensor can be further caused, the inclination change is converted into resistance change, and then the resistance change is converted into a voltage signal by an alternating current resistance bridge. The inclination amount of each sensor can be calculated,further the deformation amount of each section (1m) of the inclinometer pipe can be acquired, and then the deflection deformation of the whole section of the inclinometer pipe can be calculated according to an overlapping method, namely the total arch crown settlement displacement of the section. By using the device, the whole arch crown settlement process can be monitored before and after tunnelface excavation, the construction process is guided, and the construction safety is guaranteed.

Description

technical field [0001] The invention relates to a tunnel construction vault settlement monitoring device and method, which can be widely used in the field of tunnel construction monitoring and measurement. Background technique [0002] Monitoring and measurement is one of the three cores of the new Austrian method of tunnel construction. It can provide accurate and timely basis for evaluating the feasibility of the tunnel construction method, the rationality of the design parameters, and understanding the actual surrounding rock level and deformation characteristics of the tunnel construction. The construction time of the secondary lining of the tunnel is of decisive significance. Therefore, it is an important means to ensure the success of tunnel construction. Monitor the convergence displacement around the subsidence of the tunnel vault, confirm the stability of the surrounding rock based on the measurement data, judge the support effect, guide the construction process to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C5/00G01B7/02
CPCG01C5/00G01B7/02
Inventor 丁万涛王杨刘克奇陈瑞陈磊侯铭垒史培贺李明江龚英杰程旭东李会良
Owner SHANDONG UNIV