摘要
穿黄隧洞北岸竖井为盾构始发井,位于砂土地层,地下水位高,属超深竖井;南岸竖井位于邙山高边坡坡脚,偏压作用明显。针对这一特殊的地理地质条件,对竖井的结构特性进行了研究,提出地下连续墙与满堂内衬联合受力计算方法,且为满足盾构机出发要求而研发了新型反力座,以及防水、井底高喷加固等技术,为工程成功建成发挥了重要作用,可供同类工程参考、应用。
The north-bank shaft well of tunnel crossing Yellow River,an extra-depth shaft,is the starting well for shield machine,which is located at sandy soil layer with high groundwater level.The south-shaft is located at the toe of the high slope of Mangshan Mountain with obvious stratum bias action.According to the specific geological and geographical characteristics,we performed studies on structural characteristics of the working shaft.The method of calculating the joint stress of diaphragm wall and full lining is proposed.Furthermore,we developed the new type of reaction abutment and technologies of water prevention and shaft bottom reinforcement with high-pressure jet,which played an important role in the construction.
出处
《人民长江》
北大核心
2011年第8期31-36,共6页
Yangtze River
基金
"十一五"国家科技支撑计划项目"复杂地质条件下穿黄隧洞工程关键技术研究"(2006BAB04A11)
关键词
超深竖井
大型盾构
结构特性
变形控制
穿黄隧洞
extra-depth shaft
large scale shield tunnel
structural characteristics
deformation control
tunnel crossing Yellow River
