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积石峡水电站左岸建筑物基础及边坡开挖工程施工过程中,由于局部岩石破碎,节理发育,并有较大的断层裂隙,为了保证高边坡的稳定,对局部布置1000KN级预应力锚索,其基本设计参数如下:设计张拉力P(KN):1000;超张拉力(KN):1150(115%P);钢绞线强度级别:1860MPa;钢绞线股数:7;内锚段直径(mm):≥120;锚固段长度(m):7;锚索形式:粘结式锚索;本人通过施工技术管理,有几个问题对于其它类似工程,具有良好的借鉴价值。
In order to ensure the stability of high slope, due to local rock crushing, joint development and large fault fissures, during construction of left bank foundation of Jishixia hydropower station and slope excavation, the 1000KN prestressed anchor Cable, the basic design parameters are as follows: Design tensile force P (KN): 1000; Super tensile (KN): 1150 (115% P); strand strength level: 1860MPa; strand number: 7; Segment diameter (mm): ≥120; Anchorage length (m): 7; Anchorage cable form: Bonded anchor cable; I manage through construction technology, there are several problems for other similar projects, with good reference value.