摘要
针对铁城电站花岗片麻岩坝基岩体特点,选定5个特征试验区,梅花形布孔进行固结灌浆试验,进而布孔检验。通过波速测试、压水试验、岩芯等多种手段来对灌浆试验效果进行系统评估。数据结果分析表明,坝基岩体的可灌性较好,主体坝基固结灌浆设计方案可行。试验同时得出一些经验,并分析提出工程建议。
The dam foundation of Tiecheng hydropower station consists of granite-gneiss, where developed 2 faults, and 3 sets structural fractures. According to the site characteristics, 5 typical test divisions have been designed and consolidation grouting test carried out through 35 holes which were arranged as quincunx pattern. After 14 days from the day while grouting test completed, 3 examination holes have been designed for evaluating effectiveness of grouting test by means of wave velocity test, packer permeability test and rock core analysis.
出处
《甘肃地质》
2009年第1期87-89,96,共4页
Gansu Geology
关键词
固结灌浆
波速
压水试验
耗灰量
consolidation grouting
wave velocity
packer permeability
mortar consumption
