SENSITIVITY VERIFICATION OF THE WATER HEAD IN THE BOREHOLE ADJACENT TO THE RIVER LEVEE WITH THE LOCAL VARIATION OF THE PERMEABILITY

Abstract

Numerical Analysis of the seepage flow in the base of the river levee during the flood was performed. Calculated water head in the borehole adjacent to the river showed obvious response to the flood. The characteristics of the response of the water head in the borehole during the flood was formularized by two flood parameters. By the formularized system, the response of the water head in the borehole adjacent to the river during the flood with the variation of the local permeability was valuated as the risk of the failure of the river levee. Three dimensional analysis, the treatment of the heterogeneity soil and the application of the more detailed flood model are the future subjects.