Blasting Vibration Safety Criterion Analysis with Equivalent Elastic Boundary: Based on Accurate Loading Model

Blasting Vibration Safety Criterion Analysis with Equivalent Elastic Boundary: Based on Accurate Loading Model

In the tunnel and underground space engineering, the blasting wave will attenuate from shock wave to stress wave to elastic seismic wave in the host rock. Also, the host rock will form crushed zone, fractured zone, and elastic seismic zone under the blasting loa...

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Main Authors: Qingwen Li, Lan Qiao, Gautam Dasgupta, Siwei Ma, Liping Wang, Jianghui Dong
Format: Article
Language:English
Published: Hindawi Limited 2015-01-01
Series:Shock and Vibration
Online Access:http://dx.doi.org/10.1155/2015/604683
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spelling doaj-16a18da343c940acb36faf96b37ac8072020-11-24T23:21:54ZengHindawi LimitedShock and Vibration1070-96221875-92032015-01-01201510.1155/2015/604683604683Blasting Vibration Safety Criterion Analysis with Equivalent Elastic Boundary: Based on Accurate Loading ModelQingwen Li0Lan Qiao1Gautam Dasgupta2Siwei Ma3Liping Wang4Jianghui Dong5The School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaThe School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaDepartment of Civil Engineering and Engineering Mechanics, Columbia University, New York, NY 10027, USADepartment of Civil Engineering and Engineering Mechanics, Columbia University, New York, NY 10027, USASchool of Computer Science, Engineering and Mathematics, Flinders University, Adelaide, SA 5042, AustraliaSchool of Natural and Built Environments, University of South Australia, Adelaide, SA 5095, AustraliaIn the tunnel and underground space engineering, the blasting wave will attenuate from shock wave to stress wave to elastic seismic wave in the host rock. Also, the host rock will form crushed zone, fractured zone, and elastic seismic zone under the blasting loading and waves. In this paper, an accurate mathematical dynamic loading model was built. And the crushed zone as well as fractured zone was considered as the blasting vibration source thus deducting the partial energy for cutting host rock. So this complicated dynamic problem of segmented differential blasting was regarded as an equivalent elastic boundary problem by taking advantage of Saint-Venant’s Theorem. At last, a 3D model in finite element software FLAC3D accepted the constitutive parameters, uniformly distributed mutative loading, and the cylindrical attenuation law to predict the velocity curves and effective tensile curves for calculating safety criterion formulas of surrounding rock and tunnel liner after verifying well with the in situ monitoring data.http://dx.doi.org/10.1155/2015/604683
collection DOAJ
language English
format Article
sources DOAJ
author Qingwen Li
Lan Qiao
Gautam Dasgupta
Siwei Ma
Liping Wang
Jianghui Dong
spellingShingle Qingwen Li
Lan Qiao
Gautam Dasgupta
Siwei Ma
Liping Wang
Jianghui Dong
Blasting Vibration Safety Criterion Analysis with Equivalent Elastic Boundary: Based on Accurate Loading Model
Shock and Vibration
author_facet Qingwen Li
Lan Qiao
Gautam Dasgupta
Siwei Ma
Liping Wang
Jianghui Dong
author_sort Qingwen Li
title Blasting Vibration Safety Criterion Analysis with Equivalent Elastic Boundary: Based on Accurate Loading Model
title_short Blasting Vibration Safety Criterion Analysis with Equivalent Elastic Boundary: Based on Accurate Loading Model
title_full Blasting Vibration Safety Criterion Analysis with Equivalent Elastic Boundary: Based on Accurate Loading Model
title_fullStr Blasting Vibration Safety Criterion Analysis with Equivalent Elastic Boundary: Based on Accurate Loading Model
title_full_unstemmed Blasting Vibration Safety Criterion Analysis with Equivalent Elastic Boundary: Based on Accurate Loading Model
title_sort blasting vibration safety criterion analysis with equivalent elastic boundary: based on accurate loading model
publisher Hindawi Limited
series Shock and Vibration
issn 1070-9622
1875-9203
publishDate 2015-01-01
description In the tunnel and underground space engineering, the blasting wave will attenuate from shock wave to stress wave to elastic seismic wave in the host rock. Also, the host rock will form crushed zone, fractured zone, and elastic seismic zone under the blasting loading and waves. In this paper, an accurate mathematical dynamic loading model was built. And the crushed zone as well as fractured zone was considered as the blasting vibration source thus deducting the partial energy for cutting host rock. So this complicated dynamic problem of segmented differential blasting was regarded as an equivalent elastic boundary problem by taking advantage of Saint-Venant’s Theorem. At last, a 3D model in finite element software FLAC3D accepted the constitutive parameters, uniformly distributed mutative loading, and the cylindrical attenuation law to predict the velocity curves and effective tensile curves for calculating safety criterion formulas of surrounding rock and tunnel liner after verifying well with the in situ monitoring data.
url http://dx.doi.org/10.1155/2015/604683
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AT lanqiao blastingvibrationsafetycriterionanalysiswithequivalentelasticboundarybasedonaccurateloadingmodel
AT gautamdasgupta blastingvibrationsafetycriterionanalysiswithequivalentelasticboundarybasedonaccurateloadingmodel
AT siweima blastingvibrationsafetycriterionanalysiswithequivalentelasticboundarybasedonaccurateloadingmodel
AT lipingwang blastingvibrationsafetycriterionanalysiswithequivalentelasticboundarybasedonaccurateloadingmodel
AT jianghuidong blastingvibrationsafetycriterionanalysiswithequivalentelasticboundarybasedonaccurateloadingmodel
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