On the Stability of Dam Slopes with Winter Fills of Individual Dam Zones (Zur Standsicherheit von Staudammboschungen mit Winterschuttung Einzelner Dammzonen),
Abstract
German Standard TGL 21 239, Sheet 3, valid in the GDR, permits dam construction materials to be installed under frost only when the prescribed tightness and adequate bonding in the construction joints of the fill can be achieved. To solve this problem of winter construction with natural earth packing materials, extensive studies were performed in the VEB special construction combine on hydroconstruction in Weimar. In this connection, the VEB water economy planning in Halle received the commission of demonstrating the stability of dam slopes, with the objective of understanding the stability-reducing effect, under winter conditions, of filled dam zones consisting of cohesive earth materials. The effects of frost reduce the sheer strength in the construction joints of the fill layers of the cohesive earth material. Advance calculation of this effect on the stability of dam slopes is a necessary basis for deciding the implementability of winter fill and the associated economic considerations. The greater permeability of construction joints subject to frost is another important effect. These must be evaluated according to the method described. In this report, the effect of planned winter fills on the stability of slopes on two dam cross sections with different construction shall be explained.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1977
- Accession Number
- ADA044764
Entities
People
- Karl-heinz Brummer
Organizations
- Cold Regions Research and Engineering Laboratory