【摘要】 岩体边坡爆破振动对高刚度的预应力锚索的破坏事故迫使设计与施工人员予以关注,然而这一问题由于其复杂性与地质条件的随意性使研究的难度大大超出目前常用的经典研究手段与方法的能力范围,应用先进的计算机数值仿真试验技术对不同爆破单响药量、不同岩体阻尼下,距爆区不同距离处不同预应力吨位的预应力锚索的动态响应特性进行探索性研究,得到一些初步量化规律,可借鉴于其他工程设计与施工。更多还原

【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.更多还原