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This book examines the water resistance capacity of the Upper Ordovician limestone and its feasibility as a water barrier to achieve safe and green mining. Mine water inrush events often occur during coal mine construction and production; they account for a large proportion of the coal mine disasters and accidents in China, second only to gas explosions. As mining depths and mining intensity continue to increase, the hydrogeological conditions encountered are becoming more complex. This book describes in-situ methods designed to test the water resistance of the limestone layer, as well as specific grouting techniques developed to transform this layer into a barrier that can prevent water inrush during mining. The innovative technologies, which were applied and validated in two coal mines, are applicable to other coal mines or any underground engineering works.

Geology. --- Geotechnical engineering. --- Hydrogeology. --- Geotechnical Engineering & Applied Earth Sciences. --- Mine water. --- Water in mines --- Groundwater --- Engineering, Geotechnical --- Geotechnics --- Geotechnology --- Engineering geology --- Geognosy --- Geoscience --- Earth sciences --- Natural history --- Geohydrology --- Geology --- Hydrology

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This book provides an information fusion model with information fusion theory, geographic information system technology and modern mathematical methods to evaluate the risks of groundwater inrushes from aquifers underlying coal seams. In this new model, the water inrush vulnerable index was calculated with variable weights theory. It overcomes the defect of the traditional vulnerability index method that assumes constant weights for the factors controlling the water inrush. Mine water inrush events often occur during coal mine construction and production; they account for a large proportion of the nation’s coal mine disasters and accidents in China. Between 2005 and 2014, 513 water inrush incidents have occurred with a total loss of 2,753 lives. As mining depths and mining intensity continue to increase, the hydrogeological conditions encountered are becoming more complex. The innovative model presented here was applied to two coal mines in China with proved better results than the traditional vulnerability index method. .

Mine water. --- Earth sciences. --- Hydrogeology. --- Geotechnical engineering. --- Geographical information systems. --- Mathematical physics. --- Earth Sciences. --- Geotechnical Engineering & Applied Earth Sciences. --- Mathematical Applications in the Physical Sciences. --- Geographical Information Systems/Cartography. --- Water in mines --- Groundwater --- Hydraulic engineering. --- Geographical information systems --- GIS (Information systems) --- Information storage and retrieval systems --- Engineering, Hydraulic --- Engineering --- Fluid mechanics --- Hydraulics --- Shore protection --- Geography --- Physical mathematics --- Physics --- Engineering, Geotechnical --- Geotechnics --- Geotechnology --- Engineering geology --- Geohydrology --- Geology --- Hydrology --- Mathematics

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Uranium is an element to be found ubiquitous in rock, soil, and water. Uranium concentrations in natural ground water can be more than several hundreds µg/l without impact from mining, nuclear industry, and fertilizers. Considering the WHO recommendation for drinking water of 15 µg/l (has been as low as 2 µg/l before) due to the chemical toxicity of uranium the element uranium has become an important issue in environmental research. Besides natural enrichment of uranium in aquifers uranium mining and milling activities, further uranium processing to nuclear fuel, emissions form burning coal and oil, and the application of uranium containing phosphate fertilizers may enrich the natural uranium concentrations in soil and water by far. In October 1995 the first international conference on Uranium Mining and Hydrogeology (UMH I) was held in Freiberg being organized by the Department of Geology at the Technical University Bergakademie Freiberg by the support of the Saxon State Ministry of Geology and Environment. Due to the large scientific interest in the topic of uranium a second conference (UMH II) took place in Freiberg in September 1998. Furthermore, in September 2002 scientists working on the topic of uranium mining and hydrogeology attended the third conference (UMH III) which was jointly held together with the International Mine Water - sociation (IMWA) Symposium 2002. The reviewed papers and posters of the 2002 conference have been published by Springer entitled Uranium in the aquatic en- ronment (edited by Merkel, Planer-Friedrich and Wolkersdorfer).

Uranium mines and mining --- Mine drainage --- Mine water --- Groundwater --- Environmental aspects --- Pollution --- Water in mines --- Drainage --- Mines and mineral resources --- Uranium industry --- Environmental pollution. --- Geochemistry. --- Hydraulic engineering. --- Geotechnical Engineering & Applied Earth Sciences. --- Terrestrial Pollution. --- Hydrogeology. --- Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution. --- Engineering, Hydraulic --- Engineering --- Fluid mechanics --- Hydraulics --- Shore protection --- Chemical composition of the earth --- Chemical geology --- Geological chemistry --- Geology, Chemical --- Chemistry --- Earth sciences --- Chemical pollution --- Chemicals --- Contamination of environment --- Environmental pollution --- Contamination (Technology) --- Asbestos abatement --- Bioremediation --- Environmental engineering --- Environmental quality --- Factory and trade waste --- Hazardous waste site remediation --- Hazardous wastes --- In situ remediation --- Lead abatement --- Pollutants --- Refuse and refuse disposal --- Geotechnical engineering. --- Water pollution. --- Aquatic pollution --- Fresh water --- Fresh water pollution --- Freshwater pollution --- Inland water pollution --- Lake pollution --- Lakes --- Reservoirs --- River pollution --- Rivers --- Stream pollution --- Water contamination --- Water pollutants --- Water pollution --- Waste disposal in rivers, lakes, etc. --- Geohydrology --- Geology --- Hydrology --- Engineering, Geotechnical --- Geotechnics --- Geotechnology --- Engineering geology

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Switching off the pumps of a mine is one of the last steps in the lifetime of a surface or underground mine. As the water in the open space raises, the water might become contaminated with different pollutants and eventually starts to flow in the open voids. This book addresses the processes related to mine abandonment from a hydrogeological perspective. After an introduction to the relevant hydrogeochemical processes the book gives detailed information about mine closure procedures. Based on in-situ measurements the hydrodynamic processes in a flooded mine are described and some of the mine closure flow models exemplified. As all investigations base on precise data, the book gives some key issues of monitoring and sampling, especially flow monitoring. Then the book shows some new methodologies for conducting tracer tests in flooded mines and gives some hints to passive mine water treatment. At the end 13 well investigated case studies of flooded underground mine and mine water tracer tests are described and interpreted from a hydrodynamic point of view.

Mineral industries --- Mine water. --- Water quality management. --- Mine drainage --- Environmental aspects. --- Drainage --- Water quality --- Water quality control --- Management --- Sewage disposal --- Water conservation --- Water-supply --- Water in mines --- Groundwater --- Mining engineering --- Environmental aspects --- Hydraulic engineering. --- Mineral resources. --- Environmental pollution. --- Environmental toxicology. --- Hydrogeology. --- Water Policy/Water Governance/Water Management. --- Mineral Resources. --- Geotechnical Engineering & Applied Earth Sciences. --- Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution. --- Ecotoxicology. --- Ecotoxicology --- Pollutants --- Pollution --- Environmental health --- Toxicology --- Chemical pollution --- Chemicals --- Contamination of environment --- Environmental pollution --- Contamination (Technology) --- Asbestos abatement --- Bioremediation --- Environmental engineering --- Environmental quality --- Factory and trade waste --- Hazardous waste site remediation --- Hazardous wastes --- In situ remediation --- Lead abatement --- Refuse and refuse disposal --- Deposits, Mineral --- Mineral deposits --- Mineral resources --- Mines and mining --- Mining --- Natural resources --- Geology, Economic --- Minerals --- Engineering, Hydraulic --- Engineering --- Fluid mechanics --- Hydraulics --- Shore protection --- Environmental management. --- Geotechnical engineering. --- Water pollution. --- Aquatic pollution --- Fresh water --- Fresh water pollution --- Freshwater pollution --- Inland water pollution --- Lake pollution --- Lakes --- Reservoirs --- River pollution --- Rivers --- Stream pollution --- Water contamination --- Water pollutants --- Water pollution --- Waste disposal in rivers, lakes, etc. --- Engineering, Geotechnical --- Geotechnics --- Geotechnology --- Engineering geology --- Environmental stewardship --- Stewardship, Environmental --- Environmental sciences --- Geohydrology --- Geology --- Hydrology