| Based on the dynamic stability of joint rock mass slope, the blasting load model, the wave propagation through the slipping surfaces or faults, the evaluation method of to the slope stability under dynamic load, the influence of blasting on the pre-stressed anchorages are investigated in this paper and some meaningful conclusions are achieved as follows:(1) Based on the current blasting models disadvantage , a new blasting load model is proposed by means of the back-analyzing the dynamical stress of the in-site measurements and considering the influence of the rock mass damping on the blasting waves. Also the validity of the model is confirmed by the measuring results.(2)Both physical tests and numerical tests are implemented to study the blasting wave propagation through the slipping surfaces or faults to describe the blast wave propagation features on the slops.(3)After discussion the distribution pattern of the dynamic stress and deformation of the slope, evaluating approaches are proposed to judge the dynamic stability of the slope with joints and faults.(4) Systemic numerical tests are implemented to analyze the dynamic response of the pre-stressed anchorages with different rock damping under different blasting condition and the dynamic stress behaviors on the response of single anchorage and group anchorages are obtained, then a safety measures and guideline are suggested for design and construction.(5) At last, based on the blasting load model and the evaluation method fro the dynamic stability of slope proposed above, two cases in Xiaowan power station and Laxiwa Project are implemented dynamic stability analysis and some valuable construction measures are proposed, which is also useful for other similar slopes.
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