A pressure cell fixing device and construction method for measuring tunnel surrounding rock pressure

A technology of surrounding rock pressure and fixing device, applied in the direction of measuring device, measuring force, instrument, etc., can solve the problems of changing the calibration coefficient of the pressure box, error of the measurement result, and keeping the contact surface of difficult surrounding rock parallel, so as to eliminate the measurement results. The effect of being too large and improving the accuracy
CN108151920BActive Publication Date: 2020-04-21SHANDONG UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANDONG UNIV
Publication Date
2020-04-21

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Abstract

The invention discloses a pressure cell fixing device for measuring the tunnel surrounding rock pressure and a construction method. The device comprises an annular rubber ring which is arranged on anouter ring of a pressure cell and used for fixing the pressure cell; the bottom of the pressure cell is supported by a base support; the base support and the rubber ring are arranged in an anti-sideslip outer sleeve, and the angle of the pressure cell and the fitting degree of the pressure cell fitting into the surrounding rock surface are adjusted through adjusting bolts; the anti-sideslip outersleeve is connected with a lifting sleeve which sleeves a base fixing rod, and the bottom of the base fixing rod is fixed to a fixed base.
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Description

technical field

[0001] The invention relates to a pressure box fixing device and a construction method for measuring the surrounding rock pressure of a tunnel. Background technique

[0002] In underground engineering construction, surrounding rock pressure measurement is one of the selected items. Monitoring personnel often bury pressure gauges for measurement, but in rock tunnels, there are many difficulties in measuring surrounding rock pressure, and the method of embedding pressure cells also has the following disadvantages:

[0003] 1. Monitoring personnel often use the method of electric welding the pressure gauge on the initial support steel arch, and this electric welding method will generate high temperature, which will change the calibration coefficient of the pressure box, and eventually lead to large errors or even errors in the measurement results ;

[0004] 2. After the pressure box is electric-welded on the steel arch, there is still a large gap between the p...

Claims

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