DESIGN AND CONSTRUCTION OF A DAM AT BOECKELLA LAKE - ESPERANZA BAY-CAV 2002
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资源简介：
DURING THE AUSTRAL SUMMER 2001-2002 WAS PERFORMED RESEARCH AND FIELD WORK
RELATED TO DESIGN AND CONSTRUCTION OF A DAM IN ZONE OF CONTINUOUS PERMAFROST IN
THE VICINITY OF ESPERANZA STATION, ANTARCTIC PENINSULA. THE GEOTECHNICAL AND
GEOCRYOGENICAL PARAMETERS OF THIS SECTOR ARE TYPICAL FOR CONTINUOUS ICE-RICH
PERMAFROST, WITH MEAN ANNUAL SOIL TEMPERATURE OF ABOUT -3.5�C.
IN THIS TYPE OF PERMAFROST THE CONSTRUCTION OF A DAM IS MORE DIFFICULT THAN IN
TEMPERATE REGIONS BECAUSE THE SURFACE DISTURBANCES CAN PRODUCE THE EROSION OF
SOIL AND FORMATION OF THERMOKARST. THE PRACTICE AND POSITIVE EXPERIENCES
ACQUIRED IN CONSTRUCTION AND MAINTENANCE OF DAMS IN COLD REGIONS LIKE RUSSIA,
CANADA AND USA PROVIDE THE BASIC PRINCIPLES FOR DESIGN AS WELL AS DIFFERENT
METHODS OF HYDROTECHNICAL CONSTRUCTION IN ZONE OF PERMAFROST.
TO EVALUATE THE PERFORMANCE OF THIS TYPE OF A SYSTEM WERE CONSIDERED THE
CLIMATE AND GEOCRYOLOGIC CONDITIONS IN THE AREA AND TAKEN INTO ACCOUNT THE
THERMOKARST PROCESSES AND DEVELOPMENT OF FREATIC AQUIFER WITHIN THE DAM AREA.
IN ADDITION, THE METHODS FOR CALCULATION OF THERMAL REGIME IN ARTIFICIALLY
FROZEN SOILS ARE ALSO PROVIDED
提供机构：
SCIOPS
