Laboratory testing of the precision and accuracy of the TM-71 dilatometer

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985891%3A_____%2F18%3A00499833" target="_blank" >RIV/67985891:_____/18:00499833 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21110/18:00323529

Result on the web

<a href="https://www.sgem.org/sgemlib/spip.php?article11786" target="_blank" >https://www.sgem.org/sgemlib/spip.php?article11786</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5593/sgem2018/1.2/S02.055" target="_blank" >10.5593/sgem2018/1.2/S02.055</a>

Result language

angličtina

Original language name

Laboratory testing of the precision and accuracy of the TM-71 dilatometer

Original language description

The TM-71 dilatometer is a device manufactured in the 60s of the 20th century in the Institute of Rock Structure and Mechanics of the Czech Academy of Sciences. It has been developed as a reliable and easy-to-use rock crack monitoring facility capable of working even in the least favorable climatic conditions. It is a purely mechanical system capable of determining relative shifts and rotations in all three axis of two monitored blocks. The device is read out using two pairs of overlapping optical patterns, which are firmly connected to the rock blocks. Their mutual shifts and rotations changes the structure of image emerging on the overlap of the patterns based on moiré effect. The device is currently widely used to study geodynamic processes such as slow slope movements or movements on fracture structures. This article describes laboratory testing of the TM-71 device to determine the precision and accuracy, which is essential for reliable evaluation of the data measured. At present, the accuracy of reading the instrument is well known, which directly depends on the properties of the moiré patterns used and is readily quantifiable by the mathematical way. The purpose of the instrument testing was primarily to determine the accuracy from the mechanical point of view. Namely, accuracy of the response of the optical patterns to the induced displacement of the monitored blocks. For several series of laboratory tests, standard deviations of measured displacements were determined.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20701 - Environmental and geological engineering, geotechnics

Project

<a href="/en/project/LM2015079" target="_blank" >LM2015079: Distributed System of Permanent Observatory Measurements and Temporary Monitoring of Geophysical Fields</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM 2018

ISBN

978-619-7408-36-2

ISSN

1314-2704

e-ISSN

—

Number of pages

7

Pages from-to

433-439

Publisher name

STEF92 Technology

Place of publication

Sofia

Event location

Albena

Event date

Jun 2, 2018

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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