分段渐进帷幕注浆技术在大瑶山隧道近接水库段地表加固中的应用  

Application Research of Subsection Progressive Curtain Grouting Technique on Surface Strengthening of Dayaoshan Tunnel near by Reservoir Section

作　　者：邓海峰 康士相 

机构地区：[1]中国葛洲坝集团股份有限公司勘测设计院,武汉430223 [2]中铁十二局集团第二工程有限公司,太原030032

出　　处：《水利科技与经济》2014年第3期133-136,共4页Water Conservancy Science and Technology and Economy

摘　　要：为确保大瑶山隧道近接水库段洞内施工安全,防止发生突水危险,采用分段渐进帷幕注浆技术对该地段进行地表加固并形成防渗帷幕。由于浆液对岩体裂隙起到了很好的封堵作用,隧道内仅出现局部渗水情况。实践证明,该方法改善了地表土层的性质,有效地隔断了地下水的渗流路径,提高了隧道通过该地段的安全性。To maintain Dayaoshan tunnel construction safety and prevent the water- inrush, subsec- tion progressive curtain grouting technology is used to surface strengthening and form anti - seepage curtain of the reservoir section. Tunnel leakage appears in few regions due to grout has blocked the rock fracture. The practice proved that this technology can improve the characteristics of surface soil layer, and effective separate the seepage path of groundwater, moreover advance the security of con- struction in tunnel near by reservoir section.

关 键 词：地表加固 分段渐进帷幕注浆 注浆效果 水库 大瑶山隧道 

分 类 号：TV52[水利工程—水利水电工程]