Assessing safety conditions in underground excavations after a methane-air mixture explosion
A technique for evaluation of shock wave impulse after a methane-air mixture explosion is elaborated. The numerical model developed in previous studies has been verified in the laboratory by using laser initiation of explosives and measuring the pressure impulses of explosion products on a ballistic...
Main Authors: | , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
EDP Sciences
2019-01-01
|
Series: | E3S Web of Conferences |
Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/49/e3sconf_usme2019_01008.pdf |
id |
doaj-e62e93da631e46ce9b0b434ea294fd3f |
---|---|
record_format |
Article |
spelling |
doaj-e62e93da631e46ce9b0b434ea294fd3f2021-04-02T12:07:12ZengEDP SciencesE3S Web of Conferences2267-12422019-01-011230100810.1051/e3sconf/201912301008e3sconf_usme2019_01008Assessing safety conditions in underground excavations after a methane-air mixture explosionNalisko Mykola0Sobolev Valerii1Rudakov Dmytro2Bilan Nataliia3Prydniprovska State Academy of Civil Engineering and Architecture, Department of Health and SafetyDnipro University of Technology, Department of Construction, Geotechnics and GeomechanicsDnipro University of Technology, Department of Hydrogeology and Engineering GeologyDnipro University of Technology, Department of General and Structural GeologyA technique for evaluation of shock wave impulse after a methane-air mixture explosion is elaborated. The numerical model developed in previous studies has been verified in the laboratory by using laser initiation of explosives and measuring the pressure impulses of explosion products on a ballistic pendulum. To evaluate the mechanical impulse the functional correlations between its magnitude, the swing angle, and the pendulum characteristics have been derived analytically. The reliability of experimental results is ensured by calibrating the sensor that measures the pendulum swing angle and estimating the impulse measurement errors caused by specifics of angle measurements by a digital voltmeter, pendulum axis friction, and the pauses between measurements. Testing the developed technique to evaluate the shock wave impact showed satisfactory consistency of experimental and theoretical results with the momentum deviation below 9%, which confirms model applicability and correct reproducibility of the shock wave propagation process.https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/49/e3sconf_usme2019_01008.pdf |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Nalisko Mykola Sobolev Valerii Rudakov Dmytro Bilan Nataliia |
spellingShingle |
Nalisko Mykola Sobolev Valerii Rudakov Dmytro Bilan Nataliia Assessing safety conditions in underground excavations after a methane-air mixture explosion E3S Web of Conferences |
author_facet |
Nalisko Mykola Sobolev Valerii Rudakov Dmytro Bilan Nataliia |
author_sort |
Nalisko Mykola |
title |
Assessing safety conditions in underground excavations after a methane-air mixture explosion |
title_short |
Assessing safety conditions in underground excavations after a methane-air mixture explosion |
title_full |
Assessing safety conditions in underground excavations after a methane-air mixture explosion |
title_fullStr |
Assessing safety conditions in underground excavations after a methane-air mixture explosion |
title_full_unstemmed |
Assessing safety conditions in underground excavations after a methane-air mixture explosion |
title_sort |
assessing safety conditions in underground excavations after a methane-air mixture explosion |
publisher |
EDP Sciences |
series |
E3S Web of Conferences |
issn |
2267-1242 |
publishDate |
2019-01-01 |
description |
A technique for evaluation of shock wave impulse after a methane-air mixture explosion is elaborated. The numerical model developed in previous studies has been verified in the laboratory by using laser initiation of explosives and measuring the pressure impulses of explosion products on a ballistic pendulum. To evaluate the mechanical impulse the functional correlations between its magnitude, the swing angle, and the pendulum characteristics have been derived analytically. The reliability of experimental results is ensured by calibrating the sensor that measures the pendulum swing angle and estimating the impulse measurement errors caused by specifics of angle measurements by a digital voltmeter, pendulum axis friction, and the pauses between measurements. Testing the developed technique to evaluate the shock wave impact showed satisfactory consistency of experimental and theoretical results with the momentum deviation below 9%, which confirms model applicability and correct reproducibility of the shock wave propagation process. |
url |
https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/49/e3sconf_usme2019_01008.pdf |
work_keys_str_mv |
AT naliskomykola assessingsafetyconditionsinundergroundexcavationsafteramethaneairmixtureexplosion AT sobolevvalerii assessingsafetyconditionsinundergroundexcavationsafteramethaneairmixtureexplosion AT rudakovdmytro assessingsafetyconditionsinundergroundexcavationsafteramethaneairmixtureexplosion AT bilannataliia assessingsafetyconditionsinundergroundexcavationsafteramethaneairmixtureexplosion |
_version_ |
1721570213991809024 |