摘要
在饱和粉质砂土层中根据其土层透水性好的特点,利用地表降水工艺及与洞内轻型井点降水相结合的降水措施,能充分降低地层中的地下水位,弥补单一降水工艺降水不彻底的缺陷,防止涌泥涌砂的出现,保证大断面近距双向隧道的安全,实现无水施工。
The dewatering measure combining surface water technology and light well point dewatering on saturated sandy soil stratum according to the favorable water permeability of the soil stratum can effectively lower the underground water level in the stratum and make up the unthorough dewatering of single dewatering technology. Mud and sand inflows may be prevented and safe and waterless construction of large-section close double-line tunnel may be guaranteed.
出处
《建筑技术》
北大核心
2009年第11期993-995,共3页
Architecture Technology
关键词
双线隧道
饱和粉质砂土层
浅埋暗挖法
轻型井点降水
double-line tunnel
saturated sandy soil stratum
shallow concealed excavation method
light well point dewatering
