Browsing by Subject "dump soils"

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Access status: Restricted ,
Ocena osiadania zapadowego jednorodnego ośrodka rozdrobnionego drugiego rodzaju
(Data obrony: 2012-01-30) Cyba, Adam
Wydział Geologii, Geofizyki i Ochrony Środowiska
The purpose of this study is to evaluate collapse settlement of dump soils. Evaluation was based on two tasks. The first task was to determine the effect of the self-weight of dump soil, expressed the height of dump, to the value of the collapse settlement. The second concerned the assessment of the size of wind farm settlements located on the dump soil, depending on the variant of the investment. Investments are presented in two variants. Calculations were carried out. After analyzing the results obtained information about changes in volume of collapse settlement discharges depending on the assumptions.
Access status: Open Access ,
Osiadanie gruntów zwałowanych w poeksploatacyjnym wyrobisku odkrywkowym w wyniku odbudowy zwierciadła wody gruntowej
(Wydawnictwa AGH, 2008) Woźniak, Henryk; Borecka, Aleksandra ; Kaczmarczyk, Robert
Common remediation method of inactive open pits is a partial or complete infilling with dump soil derived from removed overburden. A problems which rises during such remediation is a significant settlement of soils caused by its high compressibility. Recognition of compressibility and settlement enables the proper design of both required and final depths of the fill and allows to balance the required and existing volumes of dumped material. Authors proposed a calculation method for settlement of dumped fill deposited in an inactive open pit, which includes self-weight settlement and collapse settlement caused by recovery of groundwater table. The proposed calculation is based upon solution given by Nwabuokei & Lovell (1985) for settlement of fills composed of compacted soil. Examples of calculations are presented in which both the compressibility and collapse potential parameters were determined from authors' own studies.
Access status: Open Access ,
Właściwości mieszanin gruntowo-popiołowych i ich wykorzystanie w inżynierii środowiska
(Wydawnictwa AGH, 2007) Rybicki, Stanisław; Górniak, Katarzyna; Gaweł, Adam
The paper presents the results of studies on physico-mechanical, mineralogical and structural properties of mixtures composed of cohesive dump soils originating from the »Turów« lignite open pit mine and fly ash derived from the »Turów« power plant, which burns lignite from this mine. The dump soils, which include mostly Miocene clays with minor sands and gravels were mixed with variable proportions of raw fly ash, desulphurized fly ash from pulverized fuel furnaces and desulphurized fly ash from fluidized fuel furnaces. Fly ash and soil mixtures have been subjected to setting for 28 days under the optimum moisture content. Then physical and chemical properties, phase composition, mineralogical composition and microstructures were determined. Similar properties were measured for soils and for three types of fly ash. The results demonstrated the increasing shear strength parameters - mainly cohesion, particularly for mixtures of fluidized fly ash and soil. The changes and pecularities of mineral and phase compositions, and mixrostructures were described, which control the properties of mixtures. The possible applications of fly ash and soil mixtures in environment engineering were proposed.