An effective method of explosive compaction of hydraulic structures foundations

If an explosive compaction method is used, there are two ways to blast charges in each turn: simultaneous and consecutive. This paper presents the results of theoretical studies, field trials and pilot sealing in production conditions, proving the effectiveness of the method of sequential detonation...

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Main Author: O.P. Minaev
Format: Article
Language:English
Published: Peter the Great St. Petersburg Polytechnic University 2014-10-01
Series:Инженерно-строительный журнал
Subjects:
Online Access:http://www.engstroy.spb.ru/eng/index_2014_06/04.html
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author O.P. Minaev
author_facet O.P. Minaev
author_sort O.P. Minaev
collection DOAJ
description If an explosive compaction method is used, there are two ways to blast charges in each turn: simultaneous and consecutive. This paper presents the results of theoretical studies, field trials and pilot sealing in production conditions, proving the effectiveness of the method of sequential detonation compared to the simultaneous one with base soils compacting on site. The conducted theoretical studies have shown that sequential detonation of neighboring charges with the time interval Δt that is smaller than the time of compaction of liquefied soil base layer t UP1 from previous charge multiple destruction of soil structure occurs with its consolidation within the limits of the compacted base. The obtained results of experimental trials have showed an increase in the relative values of average and maximal settlement on the site with sequential detonation compared with the one with the simultaneous one. Accordingly, the resistance of the implementation of the static probe tip Q3 increased to the values that showed a solid build of sand bases after compacting using the method of sequential detonation of charges.
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spelling doaj.art-cb6cef18a8574c5f89a46103a7c24b272022-12-22T01:24:40ZengPeter the Great St. Petersburg Polytechnic UniversityИнженерно-строительный журнал2071-47262071-03052014-10-01506323910.5862/MCE.50.4An effective method of explosive compaction of hydraulic structures foundationsO.P. Minaev0Saint-Petersburg State Polytechnical UniversityIf an explosive compaction method is used, there are two ways to blast charges in each turn: simultaneous and consecutive. This paper presents the results of theoretical studies, field trials and pilot sealing in production conditions, proving the effectiveness of the method of sequential detonation compared to the simultaneous one with base soils compacting on site. The conducted theoretical studies have shown that sequential detonation of neighboring charges with the time interval Δt that is smaller than the time of compaction of liquefied soil base layer t UP1 from previous charge multiple destruction of soil structure occurs with its consolidation within the limits of the compacted base. The obtained results of experimental trials have showed an increase in the relative values of average and maximal settlement on the site with sequential detonation compared with the one with the simultaneous one. Accordingly, the resistance of the implementation of the static probe tip Q3 increased to the values that showed a solid build of sand bases after compacting using the method of sequential detonation of charges.http://www.engstroy.spb.ru/eng/index_2014_06/04.htmlbases and structureshydraulic engineeringwater-saturated sand soilsblasting method of compactionthe method of sequential blasting of chargessettlementsdensity
spellingShingle O.P. Minaev
An effective method of explosive compaction of hydraulic structures foundations
Инженерно-строительный журнал
bases and structures
hydraulic engineering
water-saturated sand soils
blasting method of compaction
the method of sequential blasting of charges
settlements
density
title An effective method of explosive compaction of hydraulic structures foundations
title_full An effective method of explosive compaction of hydraulic structures foundations
title_fullStr An effective method of explosive compaction of hydraulic structures foundations
title_full_unstemmed An effective method of explosive compaction of hydraulic structures foundations
title_short An effective method of explosive compaction of hydraulic structures foundations
title_sort effective method of explosive compaction of hydraulic structures foundations
topic bases and structures
hydraulic engineering
water-saturated sand soils
blasting method of compaction
the method of sequential blasting of charges
settlements
density
url http://www.engstroy.spb.ru/eng/index_2014_06/04.html
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