DESIGN AND CONSTRUCTION OF A DAM AT BOECKELLA LAKE - ESPERANZA BAY-CAV 2002

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.