摘要:

As part of a general study of various applications of hydraulic stabilization in earthworks, a project on hydraulic stabilization of turfed surfaces was initiated. The principle use of a hydraulically stabilized turfed surface (Hydroturf) is to improve the performance characteristics of natural turf sports fields under adverse weather conditions. Hydroturf is composed of any natural topsoil underlain by a filter medium that can be maintained at pressures less than atmospheric pressure.Model tests reported in this paper show that the benefits of Hydroturf are increased surface strength under wet conditions and internal drainage of surface water during rainfall. The Hydroturf system is designed for temporary hydraulic stabilization and would generally be operated only when the surface is in use during rainfall. Hydroturf offers an economical alternative to artificial turfs for all-weather sports surfaces and is ideal for improving existing natural turf fields where only heavy-wear areas need to be improved.

ISSN:0008-3674    

DOI:10.1139/t79-021

出版商:NRC Research Press    

年代:1979

数据来源: NRC

摘要:

Landslides in glacial deposits are relatively rare in southern Saskatchewan, especially in till. Till is generally a very stable material so that in order for failures to occur, some stratigraphic discontinuity must exist. A landslide at Lebret, Saskatchewan, has occurred in a generally stable area. The slide has many unusual aspects to it. It is apparently taking place on a single circular surface, whereas most slides in this region are of the multiple retrogressive form with composite failure surfaces. The slide has very large dimensions compared to other slides in this area. Theaverage surface slope on the surface of the slide is relatively steep at 20°. There is no active undercutting or activity of man to cause the failure. The stratigraphy at the site does not correlate with the drift stratigraphy in the area, indicating glacial disturbance of the established stratigraphic sequénce, which would account for the fact that it is the only slide in an otherwise stable area.

ISSN:0008-3674    

DOI:10.1139/t79-022

出版商:NRC Research Press    

年代:1979

数据来源: NRC

ISSN:0008-3674    

DOI:10.1139/t79-023

出版商:NRC Research Press    

年代:1979

数据来源: NRC

ISSN:0008-3674    

DOI:10.1139/t79-024

出版商:NRC Research Press    

年代:1979

数据来源: NRC

ISSN:0008-3674    

DOI:10.1139/t79-025

出版商:NRC Research Press    

年代:1979

数据来源: NRC

ISSN:0008-3674    

DOI:10.1139/t79-027

出版商:NRC Research Press    

年代:1979

数据来源: NRC