Application Of Electrolevels In Geotechnical Instrumentation

Geotechnical instrumentation development, has begin 1930 and 1940 and initialy wecan observe the use of hydhraulic and mechanic instruments to this purpose. Meanwhile inthe last years it can be observed the increase of the use these equipaments based onelectrical principle like resistance extensometers and electrolevels that can be coupled toefficient system data aquisition. So there is need of the use of techique more precise andcomprehensive for monitoring actual behaviour of geotechincal work so the big distancethat there is between refinement, sofistication and versatility of computacional and numericmethods in relationship quality and representative information from observation programsin the geotechincal engineering, can be shortened. The main purpose of this research is to verify the aplication of electrolvel gauges ingeothecnical instrumentation program and to develop specific procedure of assembly, calibration, installation and interpretation. This instrumentation technique in spite of beinginternationally established is still of restricted use in our country. Results obtained in twolarge concrete face rockfill dams (Xingo and TSQ-1) are presented.