Experimental study on consolidation grouting of the stilling pool on the foundation of Xinji Reservoir

Abstract

In order to ensure the progress of dam pouring and the quality of dam foundation consolidation grouting, it is necessary to conduct dam foundation consolidation grouting test. According to the geological conditions of the test area, the consolidation grouting test scheme is established, and the wave velocity, lifting deformation and water permeability of the rock mass before and after grouting are analyzed and discussed. The average wave velocity of rock mass after grouting is 7.5% higher than that before grouting. In the experiment, no lifting signs of concrete deformation were found in each hole section. The average water permeability before and after irrigation was 31.92 Lu and 12.96 Lu, respectively, and the water permeability decreased significantly after irrigation. These result show that the consolidation grouting has a good effect.

Keywords

consolidation grouting / foundation of a dam / pressure water test / geophysical detection