Abstract:The dynamic responses of prestressed anchorcables under different blasting loads,at different distances in different rock masses are studied for a practical slope project by numerical analysis using Austrian software FINAL. And some useful results are obtained. For the moderate hard rock mass,the affected region of blast vibrating on single anchorage is within 5 meters so the most dangerous region in anchor is within 5 meters from the outer fixed boundary. The influential factors for the prestressed anchorcables are the distance from blasting region,the rock mass damping parameters,the explosive quantity and prestressed load of single anchors.