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A platform for research: civil engineering, architecture and urbanism
Surveys at the Merowe hydro development in the Sudan for a reliable substantiation of the project: Engineering-geologic conditions and characteristics of the method of investigations
Conclusions Engineering surveys at the Merowe hydro development showed that in the case of conducting surveys in a short space of time with the enlistment of local survey firms not having considerable experience in surveys for hydrotechnical construction, the role of a preliminary analysis of the character of interaction of the planned structure and geologic environment made with the use of data of preceding investigations increases substantially. The establishment of the most significant factors determining the reliability of the structure and the realization of surveys oriented largely at a study of these factors should become the result of this analysis. The degree of detail and reliability of the preceding investigations fundamentally affect the choice of the most effective methods and extent of surveys being planned.The presence in the rock mass of sections with markedly contrasting properties and sections with a high inhomogeneity of properties caused, for example, by a different degree of weathering of the rocks hampers the detection of quasi-homogeneous sections. For such cases a mosaic scheme of distribution of the design characteristics according to rock quality groups is more apt when regionalizing the mass.The experience of studying alluvial deposits at the Merowe hydro development once again showed the need for careful organization of field studies under complete engineering-geologic conditions. A shortage of direct field data can be covered in part by additional laboratory investigations and analysis of data on soil-analogues, but the overall reliability of the design characteristics being taken in this case decreases. The lack of reliability in determining soil properties forces one to increase the safety factor in designs.
Surveys at the Merowe hydro development in the Sudan for a reliable substantiation of the project: Engineering-geologic conditions and characteristics of the method of investigations
Conclusions Engineering surveys at the Merowe hydro development showed that in the case of conducting surveys in a short space of time with the enlistment of local survey firms not having considerable experience in surveys for hydrotechnical construction, the role of a preliminary analysis of the character of interaction of the planned structure and geologic environment made with the use of data of preceding investigations increases substantially. The establishment of the most significant factors determining the reliability of the structure and the realization of surveys oriented largely at a study of these factors should become the result of this analysis. The degree of detail and reliability of the preceding investigations fundamentally affect the choice of the most effective methods and extent of surveys being planned.The presence in the rock mass of sections with markedly contrasting properties and sections with a high inhomogeneity of properties caused, for example, by a different degree of weathering of the rocks hampers the detection of quasi-homogeneous sections. For such cases a mosaic scheme of distribution of the design characteristics according to rock quality groups is more apt when regionalizing the mass.The experience of studying alluvial deposits at the Merowe hydro development once again showed the need for careful organization of field studies under complete engineering-geologic conditions. A shortage of direct field data can be covered in part by additional laboratory investigations and analysis of data on soil-analogues, but the overall reliability of the design characteristics being taken in this case decreases. The lack of reliability in determining soil properties forces one to increase the safety factor in designs.
Surveys at the Merowe hydro development in the Sudan for a reliable substantiation of the project: Engineering-geologic conditions and characteristics of the method of investigations
Piotrovskii, A. S. (author)
1996
Article (Journal)
English
BKL:
56.30
Wasserbau
Local classification TIB:
770/6550/8000
Numerische Modellierung der Verlandungsprozesse des Merowe Stauraums am Nil im Sudan
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