Peat crusher drive

77 stran :ilustrace (některé barevné), tabulky +9 výkresů + 1 DVD-ROMBakalářská práce je zaměřena na konstrukci pohonné jednotky kladívkového hřídele určené k drcení rašeliny. Teoretická část obsahuje literární rešerši zabývající se typy drtičů a možností jejich pohonů a blíže popisuje funkci kladívkového drtiče. Část s návrhem vlastního pohonu obsahuje popis všech součástí podložené výpočtem nebo metodou konečných prvků. Práce dále zahrnuje 3D model návrhu a výkresovou dokumentaci

Sestavení účelové inženýrskogeologické mapy M 1: 5000 vybrané části Prahy - Radlice provedená na základě podrobného terénního mapování

This work deals with constructing a detailed purpose-built engineering geological 1:5000 map of a part of Prague 5, where the tunnel of "Radlická radiála" will be excavated. This radial is designed to connect the motorway ring with the street circuit. The mapped territory is sparsely built-up, only a small part of the area on the north-east side is covered by single-family houses, on the west side there is an old brick-kiln. The subsoil is made up of paleozoic rocks which are covered with rocks from the cretaceous and quaternary age. The map is primarily designed as exposed. It was constructed using archive materials but also a detailed terrain mapping. In the work I describe the geological, engineering geological and hydrogeological conditions of the area and I create a purpose-built engineering geological map and a map of documentation points. The engineering geological map serves only as a reference base. The realization of tunnel construction will require a detailed engineering geological research.This work deals with constructing a detailed purpose-built engineering geological 1:5000 map of a part of Prague 5, where the tunnel of "Radlická radiála" will be excavated. This radial is designed to connect the motorway ring with the street circuit. The mapped territory is sparsely built-up, only a small part of the area on the north-east side is covered by single-family houses, on the west side there is an old brick-kiln. The subsoil is made up of paleozoic rocks which are covered with rocks from the cretaceous and quaternary age. The map is primarily designed as exposed. It was constructed using archive materials but also a detailed terrain mapping. In the work I describe the geological, engineering geological and hydrogeological conditions of the area and I create a purpose-built engineering geological map and a map of documentation points. The engineering geological map serves only as a reference base. The realization of tunnel construction will require a detailed engineering geological research.Institute of Hydrogeology, Engineering Geology and Applied GeophysicsÚstav hydrogeologie, inž. geologie a užité geofyzikyFaculty of SciencePřírodovědecká fakult

Zhodnocení sesuvného rizika v oblasti Prackovic po povodních 2013

Táto diplomová práca sa zaoberá zostrojením inžinierskogeologickej mapy zosuvného územia Dobkovičky v mierke 1:1000, odberom porušených vzoriek zemín a ich laboratórnym testovaním v triaxiálnom prístroji a následné modelovanie stability stien zosuvu po prípadnom odťažení zosutých hmôt. Mapovanie prebiehalo v jarnom období roku 2014. Výsledkom je ručne kreslená mapa, kde sú zakreslené všetky znaky zosuvu, vrátane 38 dokumentačných bodov. K mape je priložená legenda. Odber porušených vzoriek prebiehal pri vrtnom prieskume, ktorý robila firma AZ Conzult, spol. s.r.o. v lete 2014. Z odobratých vzoriek boli vybraté 3, na ktorých som robil triaxiálne neodvodnené skúšky s meraním pórových tlakov. Výsledkom skúšky je kritický uhol vnútorného trenia, ktorý bol použitý pri modelovaní chovania stien zosuvu po odťažení všetkých zosutých hmôt. Modelovanie bolo realizované programom Plaxis 2D.This thesis deals with constructing engineering geological 1:1000 map of Dobkovičky landslide, collecting of reconstituted soil samples, their laboratory CIUP triaxial testing and subsequent modeling of wall stability of the landslide after the excavation of collapsed soil material. Mapping was done during spring of 2014. Outcome of this thesis is hand drawn map, plotted on the map are all the elements of the landslide including 38 documentation points. Legend of the maps is attached. Collection of reconstituted soil samples was done during drilling investigation, executed by company AZ Consult, spol.s.r.o., during summer of 2014. Three samples of all that were collected were subjected to laboratory CIUP triaxial testing. The result of the testing is critical friction angel, which was used during modeling of wall stability of the landslide after excavation of all collapsed soil material. For the actual modeling, PC software Plaxis 2D was used.Institute of Hydrogeology, Engineering Geology and Applied GeophysicsÚstav hydrogeologie, inž. geologie a užité geofyzikyPřírodovědecká fakultaFaculty of Scienc

SHEAR STRENGTH OF SOILS FROM THE DOBKOVICKY LANDSLIDE IN THE CENTRAL BOHEMIAN UPLANDS DETERMINATED BY LABORATORY TESTS

The aim of this paper is to evaluate soil shear strength from the Dobkovicky landslide. The landslide was activated on June 6, 2013 after heavy rains and the D8 motorway, which was under construction at the time, was damaged. The laboratory tests were carried out on two types of soils, clay and tuff, both from the surface of the rupture. Critical and residual friction angles were evaluated on both types of soils

SHEAR STRENGTH OF SOILS FROM THE DOBKOVICKY LANDSLIDE IN THE CENTRAL BOHEMIAN UPLANDS DETERMINATED BY LABORATORY TESTS

The aim of this paper is to evaluate soil shear strength from the Dobkovicky landslide. The landslide was activated on June 6, 2013 after heavy rains and the D8 motorway, which was under construction at the time, was damaged. The laboratory tests were carried out on two types of soils, clay and tuff, both from the surface of the rupture. Critical and residual friction angles were evaluated on both types of soils

Slope deformation risk assessment in the area of Prackovice after floods in 2013

This thesis deals with constructing engineering geological 1:1000 map of Dobkovičky landslide, collecting of reconstituted soil samples, their laboratory CIUP triaxial testing and subsequent modeling of wall stability of the landslide after the excavation of collapsed soil material. Mapping was done during spring of 2014. Outcome of this thesis is hand drawn map, plotted on the map are all the elements of the landslide including 38 documentation points. Legend of the maps is attached. Collection of reconstituted soil samples was done during drilling investigation, executed by company AZ Consult, spol.s.r.o., during summer of 2014. Three samples of all that were collected were subjected to laboratory CIUP triaxial testing. The result of the testing is critical friction angel, which was used during modeling of wall stability of the landslide after excavation of all collapsed soil material. For the actual modeling, PC software Plaxis 2D was used

Slope deformation risk assessment in the area of Prackovice after floods in 2013

This thesis deals with constructing engineering geological 1:1000 map of Dobkovičky landslide, collecting of reconstituted soil samples, their laboratory CIUP triaxial testing and subsequent modeling of wall stability of the landslide after the excavation of collapsed soil material. Mapping was done during spring of 2014. Outcome of this thesis is hand drawn map, plotted on the map are all the elements of the landslide including 38 documentation points. Legend of the maps is attached. Collection of reconstituted soil samples was done during drilling investigation, executed by company AZ Consult, spol.s.r.o., during summer of 2014. Three samples of all that were collected were subjected to laboratory CIUP triaxial testing. The result of the testing is critical friction angel, which was used during modeling of wall stability of the landslide after excavation of all collapsed soil material. For the actual modeling, PC software Plaxis 2D was used

Experimentální stanovení smykové pevnosti zemin z oblasti sesuvu Dobkovičky a vývoj korelačních vztahů mezi pevností zemin a jejich fyzikálními vlastnostmi

Kritická a reziduálna pevnosť zemín sú zásadnými parametrami riadiacimi stabilitu svahu. Ich správne určenie je predpokladom úspešného inžinierskogeologického, resp. geotechnického prieskumu či posudku. Najvhodnejšou cestou stanovenia pevnostných parametrov je prostredníctvom správne zvolených laboratórnych skúšok mechaniky zemín. V špecifických prípadoch ale môžu byť tieto parametre odhadnuté na základe iných materiálových vlastností zemín. Práca objasňuje použiteľnosť rôznych korelačných rovníc z literatúry a navrhuje nové vzťahy, vytvorené z laboratórne stanovených výsledkov pevnostných a indexových parametrov zemín z Českého stredohoří. Prehľadne ukazuje, ako sú rôzne rovnice či rôzne materiálové vlastnosti zemín schopné predpovedať požadovanú hodnotu pevnosti. Práca taktiež popisuje, čím a ako môže byť reziduálna pevnosť zemín a tým aj jej odhad ovplyvnený. Jedná sa hlavne o podiel ílovej frakcie v zemine a rýchlosť šmyku pri jej laboratórnom stanovení. Výsledky sú aplikované na konkrétny geotechnický problém, a to na odhad pevnosti v kritickom stave a reziduálnej pevnosti zemín z okolia Prackovickej estakády a priľahlého násypu diaľnice D8, ktoré dlhodobo zužujú stabilitné problémy. V neposlednej rade sú v práci diskutované rôzne chyby a nejasnosti často krát badateľné v...Critical and residual states are key soil conditions relevant to slope stability. Evaluating the available shear strength in relation to these conditions is crucial for reliable stability analyses. The best way to determine the strength parameters is through properly selected laboratory tests of soil mechanics. However, in specific cases, these parameters can be estimated based on other material properties of soils. The work clarifies the applicability of various correlation equations from the literature and proposes new relationships, created from laboratory- determined results of strength and index parameters of soils from the Bohemian Central Mountains. It shows how different equations or different material properties of soils can predict the required value of strength. The work also describes how the residual strength of soils and its estimation can be affected. This is mainly caused by the clay fraction proportion and by the shear rate used in its laboratory determination. The results are applied to a specific geotechnical problem - to estimate the critical state and the residual friction angle of soils from the selected study area of the D8 motorway, which is well known thanks to the stability problems. Last but not least, various errors and misunderstandings are discussed, which are often...Institute of Hydrogeology, Engineering Geology and Applied GeophysicsÚstav hydrogeologie, inž. geologie a užité geofyzikyPřírodovědecká fakultaFaculty of Scienc