摘要
在杭州地区饱和流塑状软土盾构掘进施工中,由于受盾构机及拖出盾尾管片的竖向浮力、超挖等因素影响易出现盾构机上浮现象。在分析引起盾构机上浮的原因后,围绕导致盾构机上浮的几个要素,通过优化推力分配和管片超前量等掘进参数,并采取二次双液补充注浆、设置纵向管片拉杆、附加盾构机配重等辅助措施,有效地控制了盾构机的上浮,很好地控制了成型隧道轴线。
In Hangzhou plastic-like soft soil saturated stream of shield tunneling construction, due to the vertical buoyancy and drag shield Shield tail pipe sheet overbreak other factors prone Shield floating phenomenon. After analyzing the reasons causing the shield machine floating around several factors led to the shield machine floating, by optimizing the allocation and thrust tube sheet lead amount tunneling parameters, and take the second double liquid supplement grouting, setting longitudinal tube plate lever additional counterweight shield machine and other auxiliary measures, effective control of the floating shield machine, good control of the moldint~ tlmnel a~：i,~.
出处
《建筑技术开发》
2016年第1期45-47,共3页
Building Technology Development
关键词
盾构
饱和流塑状软土
上浮
shield
saturation flow plastic-like soft clay
float
