Abstract
The slope stability of HUANGJINXIA water control project is very prominent during the construction period. Focusing on the main features of the right bank slope of the dam during the construction period, the geological, physical, and monitoring data were integrated to analyse the influence of the fault fy17, which runs horizontally across the entire shoulder slope and tilts out of the slope at a slow dip angle. Analysis of the effect of fault fy17 on the flow field and deformation stability of the slope, the potential deformation damage mechanisms of slopes to propose targeted reinforcement solutions. On this basis, the numerical analysis method were used to review the slope stability respectively. The results show that after adopting large tonnage anchor cable support and deep drainage measures, the slope deformation has basically converged and no new signs of deformation have been found on the slope surface; the calculation results also show that the incremental deformation of subsequent excavation of the slope is not significant and the safety factor values during the construction and operation periods meet the requirements of the design specifications; the targeted reinforcement measures have effectively ensured the stability of the slope.
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