盾构施工地表沉降及GM(1,1)模型预测

Ground Surface Settlement under Shield Tunnel Construction and Prediction by Using GM(1,1) Model

文章讨论了地铁隧道区间盾构开挖对土体扰动及引起地表沉降的力学机理,概括了地层移动的主要影响因素.结合长春市地铁1号线盾构工程的实例,采用灰色GM(1,1)模型对地表沉降进行预测,并与现场监测值对比分析,发现GM(1,1)模型预测值与监测值较为一致,论证了灰色预测在盾构施工地表沉降预测的可行性.

The mechanism of ground surface settlement induced by soil disturbance in the shield tunnel construction of the metro - subway is discussed and the chief effecting factors of ground movement are summarized. Combining with engineering practice of the 1 ed line of metro - subway in Changehun, prediction of the ground surface settlement nearby construction site has been made by using grey GM（ 1, 1） model and the predicted values is close to the measured date. The feasibility of the above - mentioned method using in prediction of ground surface settlement under shield construction is proved.