Canadian Geotechnical Journal, 1990, 27(4): 496-506, 10.1139/t90-064
Unsatisfactory performance of earth and rock-fill dams involving excessive seepage, piping or failure was attributed to hydrofracture of core. Even though occurrence is reported for some time, key elements affecting hydraulic fracturing pressure, including saturation and consolidation, have obtained fairly little interest; nor have outcomes of laboratory tests or theoretical research been directly pertaining to field overall performance. Within paper, laboratory hydrofracturing tests under well-defined circumstances were performed. An easy theoretical phrase for break pressure is created concerning just main-stream soil energy variables. Instance records concerning hydraulic fracturing for the earthcore tend to be evaluated, and "field" hydraulic fracture pressure and crack closing pressure tend to be defined. The results for the laboratory tests show that hydraulic break stress just isn't a distinctive soil home; its worth is dependent on their education of saturation and combination. An evaluation associated with the data deduced from instance documents with test results and theoretical forecasts suggests basic persistence. The area hydraulic fracturing pressures tend to be bounded into the top limit by outcomes from saturated-consolidated examinations and in the low limitation by results of saturated–unconsolidated hydraulic fracturing examinations. It is strongly recommended that methodology presented may be beneficial in the evaluation of threat of hydraulic fracturing of dams. Key term: earth and rock-fill dams, hydraulic fracture, tensile energy, seepage, Teton Dam.