National Repository of Grey Literature 81 records found  beginprevious49 - 58nextend  jump to record: Search took 0.00 seconds. 
Evaluation of hutch water monitoring in the vicinity of flooded Turkaňk mine
Prylová, Kristýna ; Datel, Josef (advisor) ; Hrkal, Zbyněk (referee)
Kutná Hora and its outskirts is an area significant for polymetalic ore mining since the Middle Ages. The mining was conducted till 1990s with several interruptions thru history. The latest modern mining operation took place in Turaňk mine, which was reopened in 1950. The production was terminated in 1991 including the operational hutch water pumping. The mine was continuously flooded by groundwater affluents and precipitation water till 2001 and the hutch waters were distinctively enriched with mining elements and compounds of secondary minerals originating from oxidation in opened mine. In 2001 the hutch water overflowed to ancestral adit of 14 adjuncts causing an emergency situation. The hutch water was freely flowing thru the adit to Beránka stream which it contaminated. A hutch-water treatment plant was build consecutively in the area of former ore- preparing plant and pumping of hutch water commenced for the purpose of decreasing water level in Turkaňk hole followed by water decontamination. The plant is currently operational and optimized to maintain stable water level under the spillway to the adit of 14 adjuncts. The ore extraction took place in crystallinic massif of Kaňk hill, which northwest and southeast vicinity is settled with saturated cetraceous and quaternary sediments. These are...
Mineral waters in the Bad Brambach - Skalná area, the current knowledges.
Turnová, Štěpánka ; Goliáš, Viktor (advisor) ; Hrkal, Zbyněk (referee)
This paper summarizes the findings of the mineral waters around Skalná - Bad Brambach. Bad Brambach are radon spa that work here since 1912. Source Wettinquelle is one of the strongest radon springs in the world. Around Skalná is anomalous quantities of uranium, however, that there occurs in such small particles that netěžitelné. Radon is a decay product of U238 series. Within the study area is also NPR Soos, who is known moffetes, but there also are so-called diatomaceous peak which is a dry salt lake containing diatoms. Area of the Nový Kostel is the area with the most frequent occurrence of earthquakes in the Czech Republic. Several earthquake swarms were recorded as well as the local populations. Recent earthquake activity has been recorded in 2011. There are also several other spa municipal Františkovy lázně, Mariánske lázně, Karlovy Vary and other radon baths, which already are but a little further, Jáchymov.
The influence of precipitation on shallow mineral water abstraction
Hlaváčová, Michaela ; Hrkal, Zbyněk (advisor) ; Procházka, Vladimír (referee)
This study focuses on the influence of precipitation on shallow catchments of mineral springs in the special area of Františkovy Lázně. The thesis was made on the basis of the data provided by the company Spa Františkovy Lázně a.s.. The interdependent relations between yield springs, precipitations, atmospheric pressure and the content of free CO2 were studied. These relations were observed onto six springs - František, Luční, Nový, Solný, Železnatý and Žofie. The precipitations were compared with the yield of individual springs. The season was proved by three springs (František, Železnatý and Žofie). Retention of the precipitation was determined for springs František, Solný, Železnatý and Žofie. Considering more than half a year delay, we cannot claim that the precipitations should have a major influence on the dotation of mineral springs. The downtrend was founded for the free CO2 in all researched resources. Significant indirect relation was found using the correlation coefficient between atmospheric pressure and free CO2.
Artificial recharge of watewater in small catchments
Pleskotová, Nikola ; Hrkal, Zbyněk (advisor) ; Datel, Josef (referee)
The main objective of the thesis is to study artificial wastewater recharge in the area of Řevničov and reassessment of related problems such as groundwater chemical changes, colmatage, and unfavorable legislation in the Czech Republic. Individual chapters describe the experience with the above mentioned topic in the Czech Republic, but classifies it into the global context. The major part of the thesis focuses on the assessment of the qualitative and quantitative impacts of wastewater artificial recharge in the geological environment. These conclusions are drawn from monitoring changes of groundwater quality, which are controlled on the network of monitoring boreholes in the Řevničov experimental catchment. The natural attenuation of geological environment has considerable impact to final composition of contaminated water, which is compared to legal limits of underground and potable water in Czech Republic. In the research area several tracing tests were also applied, with the aim of proving the expected flow of wastewater into monitoring borehole. The obtained data specify the situation in the area of interest, or may serve as a source of information for future studies dealing with similar topics. Powered by TCPDF (www.tcpdf.org)
Artificial recharge of surface water to aquifer
Čechová, Tereza ; Hrkal, Zbyněk (advisor) ; Bruthans, Jiří (referee)
Artificial recharge of surface water to aquifer Tereza Čechová, Geotechnologie Abstract: The bachelor thesis is devoted to groundwater recharge. The source of groundwater is infiltration of atmospheric precipitation. The study deals with the use of controlled artificial recharge in the Czech Republic and the other countries in the Word.
Artificial recharge of surface water to aquifer
Čechová, Tereza ; Hrkal, Zbyněk (advisor) ; Bruthans, Jiří (referee)
Artificial recharge of surface water to aquifer Tereza Čechová, Geotechnologie Abstract: The bachelor thesis is devoted to groundwater recharge. The source of groundwater is infiltration of atmospheric precipitation. The study deals with the use of controlled artificial recharge in the Czech Republic and the other countries in the Word.
The issue of drugs in surface and ground waters
Šrot, Martin ; Hrkal, Zbyněk (advisor) ; Datel, Josef (referee)
The presented work deals with the state of research of medicinal substances in water formations of Czech Republic and in smaller ammount it deals with this issue abroad. It provides an overview of the most frequently occurring medicinal substances and methods for their detection and also describes the possible sources of pollution and impact of these substances on the environment. Keywords: ground water, surface water, drugs, contamination
Flooding of the Hamr I mine and evaluation of the geological structure impact on the hydrogeological conditions in the northeastern part of Stráž block
Rozman, David ; Datel, Josef (advisor) ; Hrkal, Zbyněk (referee)
The main objective of diploma thesis is to evaluate the impact of the geological structure on the hydrogeological conditions in the northeastern part of Stráž block. The study area in northern Bohemia is characterised by Cenomanian and Turonian sandstone aquifers, which are horizontally divided by Lower Turonian aquitard. The thesis focuses groundwater level analysis and study hydrogeological impacts of faults, neovolcanic veins and disturbances of rock environment caused by uranium mining. First part of the study presents description of general geological and hydrogeological conditions in the area with summary of previous investigations and reports. Various hydraulic interventions during mining, which have great impact on the groundwater level situation are described. Based on the data from collected boreholes, contour maps of groundwater level are prepared to study its shape and temporal changes. Hydraulic communication through aquitard and through Stráž fault zone have been examined by correlations of groundwater levels. The results of the study confirm sealing effect of Stráž fault zone in the examined section. Barrier effect of the neovolcanic veins has been confirmed on several locations and examples of increased hydraulic conductivity as the result of fault disturbances have been located....

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