H Asadian; E Rahimi; M Ghafoori; M Bashirgonbadi
Abstract
Recently the instrumentation of dams has gained a special place in Iran. In large-scale projects, such as earthen and concrete dams, instrumentation installation and monitoring, especially during the construction and operation, is an integral and essential component. Dam stability is one of the most ...
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Recently the instrumentation of dams has gained a special place in Iran. In large-scale projects, such as earthen and concrete dams, instrumentation installation and monitoring, especially during the construction and operation, is an integral and essential component. Dam stability is one of the most important issues related to geotechnical engineering. Therefore, considering the uncertainty of geotechnical parameters,risk analyses are inevitable in dam projects. This study has first examined the accuracy of the instrumentation installed in the dam, then dealt with the quantification of the maximum settlement, vertical stress in the core, and arching phenomenon based on the results of numerical analysis and instrumentation.For numerical analyses, theGeoStudio 7.1 Software was used. In addition to simultaneous analyses, this software is also capable of analyzing the stage construction and two-dimensional consolidation. Behavioral models used in the analysis consist of linear-elastic and elastic-perfectly plastic Mohr-Coulomb models. Acomparison between modeling and concise instrument results suggests that the doostidam is in a stable and safety condition.
A Ghazi; N Hafezi Moghadas; H Sadeghi; M Ghafoori; G Lashkaripour
Abstract
In this study, engineering geomorphology of MashhadCity is evaluated. For this purpose, aerial photos of the city, 180 drinking water wells and 1500 scattered geotechnical boreholes have been studied. Based on this information, the city divided into 6 geomorphologic units including rock outcrop, pediment, ...
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In this study, engineering geomorphology of MashhadCity is evaluated. For this purpose, aerial photos of the city, 180 drinking water wells and 1500 scattered geotechnical boreholes have been studied. Based on this information, the city divided into 6 geomorphologic units including rock outcrop, pediment, Golestan fan, Torough fan, southern fans and flat plain. Then, engineering geology properties of these units were investigated based on the geotechnical data sets. The geotechnical properties were evaluated just for the upper 10m of deposits. The results show predominant soil in the pediment and southern fans units is gravel, sandy and gravely soils are predominant in the Golestan fan unit, whereas clay and sand are predominant soils in the Torough fan and flat plain. In this study, earth evaluation was carried out based on the standard penetration test that shows the pediment unit has more resistance than other units. The clay minerals were determined based on the activity chart. Smectite and kaolinite are predominant clay minerals in the pediment and flat plain units, respectively.