Theoretical considerations presented in this paper have been brought together to create a compute... more Theoretical considerations presented in this paper have been brought together to create a computer model of a blast, a bench blast and a crater blast, with which it is possible to establish trends and to begin predicting separately the result in each parameter. The computer technique showed that the burden was the mast important blast parameter regarding fragmentation. An explosive with a very high detonation velocity could give as bad fragmentation uniformity as on of a very low detonation velocity (in bench blasting), the explosive initiation point had a noticeable effect on the explosive energy distribution. It may be said, in general, that the region ahead of the direction of firing is one of relatively height peak strain amplitude while the region behind the direction of firing is one of relatively low peak strain amplitudes. It was apparent, from the point of view of uniformity of the fragmentation in the blast product, that bottom and centre ignition gave the best result in b...
Concrete is the most widely used building material all over the world, because of its many techni... more Concrete is the most widely used building material all over the world, because of its many technical and economic qualities. This pressure on the concrete resource causes an intensive exploitation of the quarries of aggregates, which results in a exhaustion of these and environmental problems. That is why recycling and valorization of materials are considered as future solutions, to fill the deficit between production and consumption and to protect the environment. This study is part of the valorization process of local materials, which aims to reuse marble waste as fine aggregate (excess loads of marble waste exposed to bad weather conditions) available in the marble quarry of Fil-fila (Skikda, East of Algeria) in the manufacture of self- compacting concretes. It consists of introducing the marble waste as sand into the self-compacting concrete formulation, with variable percentages (25%, 50%, 75% and 100%) and to study the development of its properties both in fresh state (air content, density, slump flow, V-funnel, L-box and sieve stability) as well as the hardened one (compressive strength and flexural strength). The results obtained showed us that marble wastes can be used as sand in the manufacture of self compacting concretes.
Purpose. To study the stability of underground mining structures using numerical method based on ... more Purpose. To study the stability of underground mining structures using numerical method based on finite elements, two-dimensional (2D), Finite Element (FE) modeling using GEO5 calculation model. Methodology. To consider the influence of geotechnical parameters, the tunneling is carried out by the NATM method. In order to check settlements in soft ground and to carry out the work in complete safety, we used software based on the finite element method. Findings. Determination of the range and prediction of subsoil displacements are necessary when designing this type of structure due to the need to ensure the safety of the active environment located in the zone of influence. Originality. The originality of this work is the characterization of the soil of the studied region, determining of the different physical and mechanical properties as well as the modeling with a recent calculation model based on the Mohr-Coulomb behavior mode. Practical value. Given the characteristics of the curr...
The purpose of this work is the dolerite of Tindouf Basin and particularly the Naga area where
fe... more The purpose of this work is the dolerite of Tindouf Basin and particularly the Naga area where few wells drilled have registered gas flow from the dolerite banks and the enclosing levels of the host rock. By summarizing all the geological data brought by the polls that have recognized these intrusive rocks, we will try in this article to debate about this kind of reservoir which can prove to be in the future a new play.
Theoretical considerations presented in this paper have been brought together to create a compute... more Theoretical considerations presented in this paper have been brought together to create a computer model of a blast, a bench blast and a crater blast, with which it is possible to establish trends and to begin predicting separately the result in each parameter. The computer technique showed that the burden was the mast important blast parameter regarding fragmentation. An explosive with a very high detonation velocity could give as bad fragmentation uniformity as on of a very low detonation velocity (in bench blasting), the explosive initiation point had a noticeable effect on the explosive energy distribution. It may be said, in general, that the region ahead of the direction of firing is one of relatively height peak strain amplitude while the region behind the direction of firing is one of relatively low peak strain amplitudes. It was apparent, from the point of view of uniformity of the fragmentation in the blast product, that bottom and centre ignition gave the best result in b...
Concrete is the most widely used building material all over the world, because of its many techni... more Concrete is the most widely used building material all over the world, because of its many technical and economic qualities. This pressure on the concrete resource causes an intensive exploitation of the quarries of aggregates, which results in a exhaustion of these and environmental problems. That is why recycling and valorization of materials are considered as future solutions, to fill the deficit between production and consumption and to protect the environment. This study is part of the valorization process of local materials, which aims to reuse marble waste as fine aggregate (excess loads of marble waste exposed to bad weather conditions) available in the marble quarry of Fil-fila (Skikda, East of Algeria) in the manufacture of self- compacting concretes. It consists of introducing the marble waste as sand into the self-compacting concrete formulation, with variable percentages (25%, 50%, 75% and 100%) and to study the development of its properties both in fresh state (air content, density, slump flow, V-funnel, L-box and sieve stability) as well as the hardened one (compressive strength and flexural strength). The results obtained showed us that marble wastes can be used as sand in the manufacture of self compacting concretes.
Purpose. To study the stability of underground mining structures using numerical method based on ... more Purpose. To study the stability of underground mining structures using numerical method based on finite elements, two-dimensional (2D), Finite Element (FE) modeling using GEO5 calculation model. Methodology. To consider the influence of geotechnical parameters, the tunneling is carried out by the NATM method. In order to check settlements in soft ground and to carry out the work in complete safety, we used software based on the finite element method. Findings. Determination of the range and prediction of subsoil displacements are necessary when designing this type of structure due to the need to ensure the safety of the active environment located in the zone of influence. Originality. The originality of this work is the characterization of the soil of the studied region, determining of the different physical and mechanical properties as well as the modeling with a recent calculation model based on the Mohr-Coulomb behavior mode. Practical value. Given the characteristics of the curr...
The purpose of this work is the dolerite of Tindouf Basin and particularly the Naga area where
fe... more The purpose of this work is the dolerite of Tindouf Basin and particularly the Naga area where few wells drilled have registered gas flow from the dolerite banks and the enclosing levels of the host rock. By summarizing all the geological data brought by the polls that have recognized these intrusive rocks, we will try in this article to debate about this kind of reservoir which can prove to be in the future a new play.
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Papers by Said Berdoudi
few wells drilled have registered gas flow from the dolerite banks and the enclosing levels of
the host rock.
By summarizing all the geological data brought by the polls that have recognized these intrusive
rocks, we will try in this article to debate about this kind of reservoir which can prove to be in
the future a new play.
few wells drilled have registered gas flow from the dolerite banks and the enclosing levels of
the host rock.
By summarizing all the geological data brought by the polls that have recognized these intrusive
rocks, we will try in this article to debate about this kind of reservoir which can prove to be in
the future a new play.