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旋喷灌浆在二滩围堰工程上的应用

Application of the Jet Grouting under High Pressure in Cofferdam of Ertan Projcct
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摘要 通过二滩水电站围堰基础高水头防渗墙设计、施工及运行监测过程的论述,介绍了使用旋喷灌浆对大粒径和含有大块体复杂地层的处理方式、机理、设备和效果;说明了旋喷比泥浆法施工进度快,与帷幕灌浆及粘土心墙等防渗渗施易于连接,旋喷柱胶结密实而坚硬,有较高强度和较大的适应性,柱间连锁成墙结构紧密,整体性好,也反映了目前该项技术的国际水平与值得进一步探讨的课题。 esign,construction and operational monitoring of high head diaphragm wall in cofferdam foundation at Ertan Hydropovver Project are described.Treatment,mechanism,equipment and effects for complexformation with large grains and mass block by means of the jet grouting under high pressure are presented.Itis proved that comparing with mud grouting,the jet grouting under high pressure is connected well with cur-tain grouting and clay core,besides,the construction speed is quicker.The making columns are cementedclosely and hard with higher strength and better adaptability.The wall interlocked by columns is featuredwith close structure and good entirety.It is shown that the technique has reached international standard and isworth studing further。
作者 唐德远
出处 《四川水力发电》 1994年第A00期31-37,共7页 Sichuan Hydropower
关键词 围堰工程 旋喷灌浆 防渗墙 二滩水电站 Ertan Hydropower Station cofferdam foundation overburden on river bed jet grouting un-der high pressure diaphragm wall
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