摘要
本文根据在黄河李家峡工程施工中开展的现场试验 ,就岩石高边坡开挖时 ,爆破动荷载对已设置的边坡预应力锚杆锚索 (及锚筋桩 )等锚固设施的影响进行了研究。采用多种测试方法 ,如加速度、动应变、动应力等追踪了爆破动荷载对它们的作用过程及其影响 ,分析了其瞬时增荷及预应力受损的危害 ,并据此核算了典型滑动面的稳定性 ,本文将着重介绍对预应力锚杆锚索的加速度测试分析研究。
On the basis of field tests in the Yellow River Lijiaxia project, the influence of dynanic explosive load on the reinforced anchored installations such as anchor piles and anchorage cables is investigated. Various testing methods such as acccleration, dynamic strains and dynanic stress are used to trace the process and inflnence of dynamic explosive load on the factors are utilized. The impair of reinforced stress by instantaneous loading is analyzed. Then the stability of typical slip surgace is calculated...
出处
《爆破》
CSCD
2000年第S1期147-151,共5页
Blasting
关键词
锚固设施
爆破开挖
高边坡
anchored installations
explosive excavation
high slope
