琅琊山抽水蓄能电站地下厂房预应力锚索施工技术

Technique of prestressed anchorage cable for the construction of underground powerhouse in Langyashan Pumped Storage Station

在琅琊山抽水蓄能电站地下厂房边墙及闪长玢岩岩脉均采用了预应力锚索加固.通过对地下厂房第一、二、三层将近 200束锚索的施工,成功地解决了预应力锚索施工过程中的技术难题,取得了良好的支护效果.

The flank walls and the dioritic porphyrite vein at the underground powerhouse of Langyashan Pumped Storage Station are strengthened with prestressed anchorage cables, from which some technical problems occurred during the construction of the cable installation are resolved successfully through the construction of about 200 bunches of anchorage cables for the first to the third floors of the underground powerhouse. Furthermore, some experiences have been gained during the construction for the same work henceforth as well. So far as the experiences are concerned, the construction process, techniques and organization of the prestressed anchorage cables installation for Langyashan Pumped Storage Station are introduced herein.