摘要：Grouting, as a widely used foundation reinforcement technology in water conservancy projects, is an important engineering measure to solve problems such as dam foundation leakage and subsidence of goaf under long-distance water transfer engineering. At present, the grouting simulation and stability analysis of hydraulic engineering are faced with key problems such as concealed geological conditions, complex slurry diffusion rules, comprehensive evaluation of grouting effect and analysis of grouting stability. Based on the dam foundation grouting engineering of hydropower station and the grouting engineering of the goaf in the long-distance water transfer project across the basin, the theory and method of numerical simulation and stability analysis of hydraulic engineering grouting based on three-dimensional fine geological model are proposed, and the above problems are further developed. The research and analysis, using ANSYS software to simulate it, discussed the influence of drilling pressure, grouting hole design apex angle, hole wall clearance and other factors on the borehole inclination, and proposed the drilling anti-slope scheme which can be used in engineering practice. The experimental results show that the quality of the installation and the diameter of the installation should be smooth and solid before the installation of the equipment. The filling part should not exceed 1/3, and the hole should be drilled according to the design direction and the diameter of the drill should be straight. The length is gradually increased to about 10m. The hole wall gap is an important factor causing the bending of the borehole. When designing the grouting hole, the shape of the grouting hole should be designed as a vertical hole or a straight hole with a small apex angle as much as possible, so as to ensure that the drilling tool has a good anti-slanting effect; the use of a multi-drilling tool can be greatly reduced. The contact between the drill and the well wall reduces the phenomenon of stuck or differential pressure stuck.
