Browsing by Subject "geoengineering"

Now showing 1 - 14 of 14

Access status: Open Access ,
A review of pile machines and their selection criteria
(2015) Gonet, Andrzej; Stryczek, Stanisław; Fyda, Michał
Many geoengineering investments can be realized thanks to the use of piles, which may play numerous functions. The piles were classified in the paper in view of assumed criteria and most frequent applications. These works can be performed with specialist pile equipment. In the description attention was paid to the most important technical parameters of pile machines produced by such companies as Bauer, Casagrande and Soilmec. The multi-criteria method with a synthetic measure of evaluation was used for selecting the most suitable pile machine. Among the assumed criteria were the pull up/down force, torque, maximum depth and diameter of the pile and the main winch. The analysis of the obtained weights and criteria revealed that the Bauer pile machine BG 50 had the highest CCS pull up/down and torque and was most appropriate for making long and large-diameter piles.
Access status: Open Access ,
Dziewięćdziesiąt lat edukacji w AGH - dziewięćdziesiąt lat pracy Wydziału Górnictwa i Geoinżynierii
(Wydawnictwa AGH, 2009) Czaja, Piotr
Everybody who smelled the fragrance of these corridors, the atmosphere of lecture halls, emotion of credits, and stress of exams as well as emotion of receipt of this respectable university degree - become the member of the big family of its Graduates. As to the aged grandmother for 90th birthday - we came with flushed cheeks into these unforgettable to recall the most beautiful time of the life, to met fellow-students, to penetrate the history arising in full view of us. I took this opportunity to present you the history formed by the Graduates of the Mining Faculty written in telegraphic way on the pages of our Faculty Mining, as a Graduates of the year 1973, whose fade willed honor him to manage of it during the period of splendid Jubilee - 90 years of existence.
Access status: Open Access ,
Inżynierskie kryteria kształtowania wyrobisk podziemnych
(Wydawnictwa AGH, 2010) Gałczyński, Stefan; Wojtaszek, Andrzej
The material (physical) phenomena of roof pressure arch in soils and rock masses are considered in the paper. A small soil-coating bridge is presented as an example of this problem. Such factors as correct compression or natural consolidation of the soils form the load-carrying ability zone above the mined space. So, as result of this research, the real rock-mass arches are described as the save protections of the underground excavations. Some formulas to calculate the dimensions and a load capacity of these arches are given too.
Access status: Open Access ,
Kierunki rozwoju metod geoinżynieryjnych
(2005) Stryczek, Stanisław; Gonet, Andrzej; Wiśniowski, Rafał
Since the beginning of the 20th century the economic development has been related with the constantly increasing need for information and power sources, stimulating at the same time higher demands in the communal sector. These needs determine the necessity to develop and modernize geoengineering methods as well. Technical advancement enabled elaboration of new technologies, being an alternative for the traditional methods used so far. Deficiency of areas that would be geomechanically suitable for the construction of new building and engineering objects and the high costs of deep foundations spurred the idea of searching new, cheaper and more efficient methods of reinforcing and sealing ground and rock mass. The directions and scope of applied geoengineering methods are presented in view of various engineering activities to be undertaken.
Access status: Open Access ,
Kształcenie kadr dla potrzeb budownictwa podziemnego w Akademii Górniczo-Hutniczej w Krakowie
(2007) Tajduś, Antoni; Wichur, Andrzej
The AGH University of Science and Technology in Kraków is one of the largest and most important technical universities in the country; it is always classified high in rankings. The didactic activity of the University is conducted in 15 departments and two interdepartment schools. In the paper, the basic principles of underground construction staff training in the AGH University of Science and Technology have been presented. It points out the relations between the applied educational system with the environmental option, considering the mining environment (the rock mass) as the starting point. The advantage of the system facilitating the attainment of jobs (»the university that gives jobs«) and the step towards the realization of a geoengineer's profile have been capitalized upon.
Access status: Open Access ,
Możliwości zastosowania DiWa-mix® do prac geoinżynieryjnych
(2009) Gonet, Andrzej; Stryczek, Stanisław; Szerszeń, Krzysztof
A new binder DiWa-mix/R was characterized in the paper. Its applicability to geoengineering works was specified on the basis of laboratory analyses, i.e. density, assumed viscosity, settling, filtration and yield point of liquid suspension as well as strength to uniaxial compression and filtration coefficient of set slurry.
Access status: Open Access ,
Ograniczenie migracji wód powierzchniowych i czwartorzędowych wokół otworu podsadzkowego TP-17 w Kopalni Soli Wieliczka
(2007) Gonet, Andrzej; Stryczek, Stanisław; Brudnik, Krzysztof
The Salt Mine Wieliczka has been subjected to a number of hazard during its 7 centuries history. The most important hazard comes from water. Prevention and protection works have been undertaken to minimize the risk. On the example of a backfilling well TP-17 there were presented: its location, tasks and causes of water migration to the mine, technologies of closing the well TP-17 and sealing up the neighboring rock mass, results of geoengineering works.
Access status: Open Access ,
Pęcznienie mineralno-chemiczno-organicznych mieszanek gruntowych
(2007) Stryczek, Stanisław; Gonet, Andrzej; Rzyczniak, Mirosław; Czekaj, Lucyna
The results of studies of determining liability to swelling of chemically treated mixtures of waste drilling mud with organic and ground admixtures are presented in the paper. The investigations were carried out as a part of a project on methods of drilling waste processing and managing. In the course of the analyses, the following parameters were determined: natural humidity, swelling humidity, swelling indices, degrees of swelling, mineral-chemical--organic ground mixtures. The trends of changes of swelling indices, depending on the composition of the mixtures, were also determined.
Access status: Open Access ,
Przykłady stateczności wyrobisk tunelowych w świetle teorii ich przystosowania do górotworu
(Wydawnictwa AGH, 2009) Gałczyński, Stefan
Problem of stability of the tunnel excavations is analyzed in the paper. This problem is shown in the light of their natural or technical accommodation to the new state of stress. The geological conditions and geoengineering works were taken into account as well. Especially there are discussed the railway tunnels in Lower Silesia.
Access status: Open Access ,
Stan aktualny i przyszłość metod geoinżynieryjnych
(2005) Stryczek, Stanisław
A division of geoengineering methods has been proposed, accounting for geotechnics, geomechanics and engineering geology, in their broadest sense. Geoengineering started to develop in new, unknown domains, i.e.: civil engineering, environmental engineering, mining construction, trenchless construction, hydrotechnical construction, surface earthworks. One may risk a conclusion that geoengineering is going to grow in power in the coming decades. Therefore, it is vital to develop researches in this respect and also educate future geoengineers who could undertake this challenge. It should be born in mind that unprofessional staff, erroneous projects and badly done surface and underground works may result in grand catastrophes of unpredictable scale.
Access status: Open Access ,
Wpływ odpadów z fluidalnego spalania paliw na parametry technologiczne zaczynów uszczelniających sporządzonych na osnowie cementu portlandzkiego
(2008) Stryczek, Stanisław; Gonet, Andrzej; Wiśniowski, Rafał; Dvořák, Jacek
The recipes of sealing slurries for were optimized on the basis of experimental results in view of such drilling applications as cementing of casing pipes, closing of wells, performing cement plugs, as well as for geoengineering works related with sealing and reinforcing ground and rock mass. Laboratory analyses were performed on sealing slurries based on Portland cement CEM I 32.5 R having water-mixture properties 0.4; 0.5; 0.6 and 0.7; the fluidal ash content in the slurries was 5, 7 and 10%.
Access status: Open Access ,
Wpływ plastyfikatorów na właściwości reologiczne zaczynów uszczelniających do prac geoinżynieryjnych
(2007) Stryczek, Stanisław; Gonet, Andrzej; Wiśniowski, Rafał
Apart from the selection of proper method and technology, one of the most important factors affecting the efficiency of sealing ground and rocks with geoengineering methods (hole injection) is the selection of a sealing slurry having proper technological parameters adjusted to the existing geologic, geotechnic, mining and hydrogeologic conditions. One of the most important parameters of fresh slurry are its rheological propeties (parameters and rheological model). With well selected rheological parameters it is possible to calculate flow resistivities in the circulation system, which in turn, results in: selection of technological parameters of injection (time and pressure of injection), range of penetration of the slurry in the injected medium. The results of analyses of influence of selected Polish plastifiers on rheological properties of sealing slurries are presented in the paper.
Access status: Open Access ,
Wpływ pyłów cementowych z cementowni Chełm na właściwości technologiczne zaczynów uszczelniających
(2009) Stryczek, Stanisław; Gonet, Andrzej; Wiśniowski, Rafał; Biskup, Tomasz
The environmental protection issues grow in significance, therefore looking for potential additives of sealing slurries among waste products generated by various branches of industry, e.g. cement industry is fully justifiable. It was generally accepted that the contemporary process of cement production is waste-free as by-products of cement production are utilized at various stages. However, not all by-products are fully technologically utilized. Therefore it seem justifiable to analyze whether or not the cement dust by-product can be used as an additive of sealing slurries for modifying their technological properties so that they can be applied for sealing and reinforcing ground and rock mass purposes. The results of laboratory analyses of influence of various concentrations of cement dust generated by cement plant in Chełm on technological parameters of fresh and set sealing slurries of different parameters of water mixtures based on metallurgical cement CEM III/A 32,5. In the course of the analyses there were established optimum concentrations of cement ash additives in slurries, applicable to such geoengineering works as sealing and reinforcing ground and rock mass, with special emphasis on hole injection methods.
Access status: Open Access ,
Wpływ temperatury na właściwości technologiczne zaczynów uszczelniających stosowanych do prac geoinżynieryjnych
(2007) Stryczek, Stanisław; Gonet, Andrzej; Wiśniowski, Rafał
Sealing slurry should meet a number of requirements resulting from the specific conditions encountered in the injection wells during rock mass sealing and reinforcing operations. Sealing slurries used in the geoengineering works should provide proper course of injection procedures and be resistant to the reservoir conditions. Owing to the atmospheric conditions in which injection is performed (high amplitude of temperature), this factor should be accounted for when working out recipes. The results of investigations of the influence of temperature (5, 10, 20 degrees of Celsius) on the technological properties of sealing slurry based on the metallurgical cement CEM III/B - 32.5 and CEM III/C - 32.5 are presented in the paper.