长江科学院院报2016，Vol.33Issue(6)：134-139,6.DOI:10.11988/ckyyb.20150277
大足石刻砂岩模拟裂隙灌浆试验
Simulation of Fracture Grouting Test for Sandstones of Dazu Rock Carvings
孙鹏 1严绍军 1窦彦 1陈嘉琦 1何凯1
作者信息
- 1. 中国地质大学 武汉 工程学院，武汉 430074
- 折叠
摘要
Abstract
Seepage from sandstone fractures is an important cause of the deterioration of Dazu rock carvings, a world cultural heritage site. Fractures grouting is a traditional and effective way for the treatment of fracture seepage. A modified inorganic and environmental composite material of Metakaolin has been proposed for the grouting in the fractures of Dazu carvings. In this research, laboratory test with a man⁃made fracture was conducted to study the groutability of this material. By controlling the opening of fracture through two sandstone slates, the grouting proce⁃dure and minimum span of the artificial fracture were recorded to study the influence of water⁃cement ratio, grouting pressure and grouting duration. Results reveal that the minimum width that the slurry can flow into is controlled by the water⁃cement ratio, grouting pressure and grouting duration. Among the three factors, water⁃cement ratio plays a dominant role;while increasing the grouting pressure cannot improve the grouting efficiency obviously; raising the water⁃cement ratio and pressure or extending the grouting duration could improve the groutability of slurry in small fractures.关键词
大足石刻/裂隙渗水/文物保护/灌浆材料/灌浆试验/可灌性Key words
Dazu rock carvings/seepage from fracture/protection of cultural relics/grouting material/grouting test/groutability分类
建筑与水利引用本文复制引用
孙鹏,严绍军,窦彦,陈嘉琦,何凯..大足石刻砂岩模拟裂隙灌浆试验[J].长江科学院院报,2016,33(6):134-139,6.
