复杂地质条件下的围堰高喷防渗施工质量控制

Construction Quality Control for Cofferdam Seepage Controlled by High Pressure Jet Grouting Under Complex Geological Conditions

复杂地质条件下的高喷防渗、尤其是处在大江大河上的水利水电工程围堰防渗一直是高喷施工的一个技术难题。在这种地质条件下构筑高喷防渗墙,往往要从设计、施工两个方面采取很多技术措施、手段,并且还需有针对性,否则难免会导致围堰防渗失败。围绕水利水电工程围堰高喷设计、施工及质量检查等方面阐述了如何在复杂地层中加强高喷质量控制的措施,可供从事高喷设计、施工的人员参考。

Seepage controlled by high pressure jet grouting under complex geological conditions,especially that for cofferdam in hydropower projects on large rivers,is a difficult technical problem in high pressure jet grouting construction. Construction of high pressure jet grouting diaphragm wall under complex geological conditions should be carried out by taking many technical measures and means both in design and construction aspects,otherwise it will inevitably leads to failure of cofferdam imperviousness. In this paper,in the aspects of design,construction and quality control for high pressure jet grouting in cofferdam of hydropower project,quality control for high pressure jet grouting construction under complex geological conditions are presented for reference to design and construction of similar projects.