Record details

    Horninové prostředí a jeho inženýrskogeologická charakteristika na listu 13-143 Pečky (13-14 Nymburk)
Statement of responsibility
    Zdeněk Lochmann
Other titles
    Geological environment and its engineering geological characteristics on the 13-143 Pečky map sheet
    Lochmann, Zdeněk
Source title - serial
    Zprávy o geologických výzkumech v roce 1999
    s. 33-37
    5 diagr., 18 bibl.
    Anglické resumé
    Zkr. název ser.: Zpr. geol. Výzk. v Roce 1999.
Subject group
    geologie regionální
    kutnohorské krystalinikum
    kvartér Polabí
    mapa geologická
    mechanika hornin
    mechanika zemin
    sedimentace fluviální
Geographical name
    Pečky (Nymburk)
Abstract (in english)
   Nearly the whole surveyed area is part of the Nymburk basin with the Labe river accumulation sequence. A complex of sandy, silty and argillaceous sediments of late Cretaceous age predominates in the pre-Quarternary bedrock. Only SW corner of the map sheet is covered by migmatites of the Kutná Hora crystalline complex. The most-represented Quarternary sediments are the terrace deposits of Günz 1-Würm age, covered by loess deposits at higher levels. The youngest and most widespread terrace level (Würm) is to a considerable degree covered by eolian sands that form locally sand dunes (Sokoleč, NW of Oseček, Písková Lhota). Foundation soils with the highest bearing capacity lie on migmatites (Rdt = 175-275 kPa - at a base width of 1 m). Foundation engineering on the Cretaceous marls is largely hampered by their high degree of weathering. Eluvia reach down to a depth of 4 m and they have a lower bearing capacity (Rdt = 80-100 kPa). Their properties are shown in Figs. 1, 2 and 3.
   Terrace deposits form a good foundation soil and they consist of sands (fraction 0.25-2.0 mm) predominating over gravels (fraction 2-32 mm) - Fig. 4. In higher terraces the groundwater level is deeply sunken, being situated only in a depth of 2-3 m in the Würm terrace
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
Entered date
    15. 2. 2007
Import date
    8. 8. 2012