Les ouvrages en charge de l'aménagement Capivari-Cachoeira Conclusions sur quelques aspects généraux des souterrains à forte pression

Bouvard, Martine; Pinto, Nelson L. de S.

doi:10.1051/lhb/1971020

Cited by 2 publications

(5 citation statements)

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“…The technique of rock breakage using explosives involves drilling blast holes by percussive or rotary means, loading the blast holes with explosive and then detonating the explosive in each hole in sequence. Mechanical excavation involves two types of boring machines:partial‐face machines, which have a cutting head on the end of a movable boom, the entire machine normally being track mounted; andfull‐face machines that have a rotating head armed with cutters, that completely fill the tunnel cross‐section and hence excavates, almost invariably, a circular tunnel.The excavation operation brings about a displacement in the rock face that occurs because of the removal of stressed rock, thus allowing the remaining rock to move on unloading (Bouvard et al , 1992). As a result, a protection system is often applied to the rock face to reduce the likelihood of rock fragmentation and spalling and to catch any falling debris.…”

Section: Underground Structures Projectmentioning

confidence: 99%

“…This will result in a reduction in the number of excavation operations that are repeated, by completing an operation every 1.5 m instead of every 1 m as considered in the initial process. Note that the recommended intervals are 0.8 to 1.5 m (Bouvard et al ., 1992; Panet, 1995). This approach is supported by numerical simulation (Figure 6).…”

Section: Optimization Of the Processmentioning

confidence: 99%

“…The stiffness of the support system (Bouvard et al , 1992) is assumed to be equal to the combined stiffness of the two materials, i.e. K S =K S1 + K S2 , where:…”

Section: Numerical Simulation and Modeling During The Excavation Operationmentioning

confidence: 99%

“…The combination of the two materials was considered a thin plate and according to Bouvard et al (1992), its stiffness can be determined as follow: Equation 1 where: E: Young's modulus; e: thickness of the plate; R: Radius of the tunnel.…”

Section: Numerical Simulation and Modeling During The Excavation Operationmentioning

confidence: 99%

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Integrating numerical tools in underground construction process

Attar

Boudjakdji

Bhuiyan

et al. 2009

Engineering, Construction and Architectural Management

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/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://dx.doi.org/10.1108/09699980910970851Engineering Construction and Architectural Management, 16, 4, pp. 376-391, 2009-07-01 Integrating numerical tools in underground construction process Attar, A.; Boudjakdji, M. A.; Bhuiyan, N.; Grine, K.; Kenai, S.; Aoubed, A. The material in this document is covered by the provisions of the Copyright Act, by Canadian laws, policies, regulations and international agreements. Such provisions serve to identify the information source and, in specific instances, to prohibit reproduction of materials without written permission. For more information visit http://laws.justice.gc.ca/en/showtdm/cs/C-42Les renseignements dans ce document sont protégés par la Loi sur le droit d'auteur, par les lois, les politiques et les règlements du Canada et des accords internationaux. Ces dispositions permettent d'identifier la source de l'information et, dans certains cas, d'interdire la copie de documents sans permission écrite. Pour obtenir de plus amples renseignements : http://lois.justice.gc.ca/fr/showtdm/cs/C-42 Integrating Numerical Tools in Underground Construction Process AbstractPurpose -In Algeria, the time frame for the execution of a construction project is rarely respected because of organizational problems and uncertainties encountered while the execution is underway. A case study on the construction of a metro station is used as a pilot project to show the effectiveness of replacing traditional construction processes by more innovative procedures. Design/methodology/approach -Concurrent Engineering (CE) is applied to optimize the execution time of the underground structure. A numerical simulation is integrated into the construction process in order to update design parameters with real site conditions observed during the construction process. Findings -The results show that the implementation of CE is efficient in reducing the completion time, with an 18% reduction observed in this case study. A cost reduction of 20% on the steel frame support and a total cost reduction of 3% were obtained. Research limitations/implications -The study demonstrates that the application of CE methods can be quite valuable in large, complex construction projects. Vulgarizing it as "the solution" to adjust time frame delay, control quality and cost, might be an issue for loca...

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Section: Underground Structures Projectmentioning

confidence: 99%

Section: Optimization Of the Processmentioning

confidence: 99%

“…The stiffness of the support system (Bouvard et al , 1992) is assumed to be equal to the combined stiffness of the two materials, i.e. K S =K S1 + K S2 , where:…”

Section: Numerical Simulation and Modeling During The Excavation Operationmentioning

confidence: 99%

Section: Numerical Simulation and Modeling During The Excavation Operationmentioning

confidence: 99%

See 2 more Smart Citations

Integrating numerical tools in underground construction process

Attar

Boudjakdji

Bhuiyan

et al. 2009

Engineering, Construction and Architectural Management

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show abstract

“…Admis depuis longtemps dans les sols pulvérulents, [l] et [2] ci-dessus l'ont étendu au béton. Repris dans [3], [4], [5] et [6] pour être appliqué à du rocher, il semble avoir expliqué plusieurs phénomènes importants.…”

Section: Discussionunclassified