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The paper presents remedial problems of old large sanitary landfi lls, particularly of embankments type. One of the main problems on a such kind landfills is to secure slope stability. The stability reinforcement methods consist of retaining walls, berms (constructed with selected waste materials), geogrids and mattress constructed of scraped tires. Metallurgical slag backfill material can be used...
Chalcedonite is a sedimentary siliceous rock, which occurs at four deposits in Poland and is included into a group of unique rocks. Chalcedonite is utilized in water treatment technology, mostly as an effective fi ltration material due to its mesoporous structure and extended outer surface of the grains. This paper presents three different methods of impregnation of the mineral material (MDMC-1, MDMC-2,...
Spatial variability of salinity and alkalinity is important for site-specific management since they are the most important factors influencing soil quality and agricultural production. Geostatistical methods provide a means to study the heterogeneous nature of spatial distributions of soil salinity and alkalinity. The present study was carried out to evaluate the accuracy of different spatial interpolation...
This paper of the selected groups of nitrogen cycle bacteria in the Biebrza River was analysed. In the water samples the quantity of ammonifying bacteria, nitrifying bacteria, proteolitic bacteria was estimated and also selected water quality indicators were analysed. Large quantities of proteolitic bacteria and ammonifying bacteria were found while the quantity of nitrifying bacteria was very small...
The systems for earth dam monitoring should enable measurements of basic physical parameters describing the behavior of the structure, including: soil water pressure, soil stress, displacements, leaks, and drainage discharges. In the case of earth dam safety assessment, the monitoring data are used to detect any anomalies in dam behavior. In this paper, the dam safety has been analyzed using the Bayesian...
Popularization of automatic methods of measuring meteorological elements and substituting manual methods creates a problem of maintaining homogeneity of measurement series. In such situations it is necessary to conduct measurements simultaneously, i.e. using a method being introduced and a former method. The analysis of measurement series carried out simultaneously enables comparing and relating measurements...
The open-cast mine “Böhlen”, closed in 1921, in 1969 was transformed into “Zwenkau”(“Zw”) open-cast mine. In the seventies, together with its smaller neighbouring mine “Cospuden”(“Cs”), became one of the greatest enterprises of the Central German lignite mining area. In the last centuries Zw and Cs mines had an significant influence on the economic, technical and scientific progress of this region...
In this work the optimal operation of the water management system is analysed. The fundamental technical elements of the system are the water reservoirs and the network of the pipelines among the water reservoirs and between the water reservoirs and the water purification plants (WPPs). While the simulations of the optimal system operation, the vectors of the optimal flows are calculated, so that...
The main aim of this paper is to prove that CBR repeated test is useful to give an adequate like unconfined cyclic triaxial test parameters for design the pavement and subgrade soils. That parameter is the Resilient modulus (MR) which is the elastic modulus based on the recoverable strain under repeated load. Resilient modulus (MR), is an important parameter which characterizes the subgrade’s ability...
One of the most important tasks in hydrology is to simulate and forecast hydrologic processes and variables. To achieve this, various linear and nonlinear hydrologic models were developed. One of the most commonly applied rainfall-runoff models is the Nash’s model of the Instantaneous Unit Hydrograph (IUH) (Nash, 1957) used jointly with the CN-NRCS method. Within this paper, the Nash’s model was applied...
Investigations of the longitudinal sizes of the smallest eddies (Kolmogorov’s microscale) presented in the paper are based on measurements of instantaneous velocities in a hydraulic laboratory in a compound trapezoidal channel with different roughness conditions (smooth bed, rough bed) and with trees system on the floodplains. Sizes of the smallest eddies varied in the ranges of 0.08 to 0.48 mm. The...
The paper presents an assessment of the state of water pollution of the Dzierzgoń Lake based on bacteriological indicators. Water samples were taken at two measurement points in four study periods in July and August 2011 and 2012. A total number of psychrophilic bacteria and MPN of faecal coliforms were determined. In addition, selected chemical parameters of water quality were analyzed, including...
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