One of the main steps in road and railway embankment restoration is the spreading of previously removed topsoil, which provides an input of seeds, organic matter and microorganisms and encourages the establishment of a vegetation cover, essential to stabilise the embankment and blend it with the landscape. However, topsoil is a scarce resource, prompting the search for economic alternatives wit...

the behavior of earth dams has particular complexities against dynamic forces and its assessment requiresdetailed and scientific analysis. the farrokhi earth dam is a heterogeneous type with vertical clay core, built 150 km away from birjand and 41 km away from qaen on the farrokhi river. there are concernsregarding the stability of this dam in the event of a future severe earthquake especially...

Dams have been always considered as the important infrastructures and their critical values are counted. Hence, evaluation and avoidance of dams’ destruction have a specific importance. Seepage occurrence in dams is an inevitable phenomenon. Despite all the progress in geotechnical engineering, up to now, seepage problem is the main conflict which occurs in dams. This study tried to estimate se...

Laboratory and field tests have shown that accelerated compression of peat soils occurs in response to moderate heating and an effective overconsolidation is produced on subsequent cooling. This phenomenon has been termed thermal precompression. In this study, long-term laboratory and field tests were conducted to investigate secondary compression behavior of peat as a function of stress and te...

To Lich River (TLR) system receives wastewaters from a population of nearly two million people and 100 manufactories of five industrial zones in inner city Hanoi, Vietnam. To improve quality of TLR, the embankment was carried out in 1998 and finished in 2002, resulted in width of 20 45 m, depth of 2 4 m, and maximum water flow capacity of 30 m/s. Water and sediment quality indices based on heav...

This article presents experimental research focusing on the structural failure of central core a rockfill dam using sand-bentonite mixtures. It comprised an extensive geotechnical characterization soil materials and mixtures, including compaction strength tests, as well construction 1 m high 1.5 wide physical models. The displacements cohesive cores were recorded tailored measuring system, base...

The site for the high Quxue Dam has a narrow canyon with very steep abutments and complex geology in Sichuan Province, China. Various types of embankment concrete dams were considered an asphalt-core dam (ACED), 174 m high, was selected. asphalt core is slender impervious element some concerns have been raised about reliability safety type (ACEDs). This paper presents case study highest ever bu...

The embankment dam has the advantage that it can be built in all sub-base conditions although poor topography, but weakness is seepage, so research on seepage needed. This study uses numerical modelling with GeoStudio program: SEEP/W and SLOPE/W. data used from Tugu Dam, Trenggalek, while subbase five soil types, namely clay, silty silt, sand, sand. simulation divided into two; first condition ...

The Mesopotamian spiny eel, Mastacembelus mastacembelus, an endemic freshwater fish restricted to the Euphrates and Tigris river drainages of Mesopotamian, its related taxa in Afrotropica South Asia present suitable elements for studies evolutionary history mastacembelids across these heterogeneous areas. To understand clarify geographic variation eel from Persian Gulf basin, we investigated mo...