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2 Of Guangzhou Metro,the analysis method is presented on ground surface subsidence induced by shield construction .

以广州地铁二号线某区间隧道为背景，介绍了盾构法施工引起的地表沉降的分析方法，结合现场监测结果的对比分析，总结了地表沉降规律，对后续工程施工具有指导意义。

This paper aims to clarify the use of ground reinforcement method for shield construction in a subway station in Shanghai.

摘要］ 在盾构隧道施工中，进出洞历来是工程的难点，须确保洞口土体的稳定，保证周围建筑物和施工的安全。

There are a few researches on predicting subsurface ground movements induced by shield tunneling via brief estimating method till now.

目前对盾构隧道施工引起的地表下土体变位进行预测分析的研究还相对较少，尤其是缺乏简单实用的工程估算方法。

The bright spot above the ground shield in the foreground is Jupiter.

以上在前台地面盾亮点是木星。

D Numerical simulation of ground surface settlement under overlapped shield tunneling.

交叠隧道盾构法施工土体变形的三维数值模拟。

The relationship between ground settlement and time is studied profoundly on the basis of testing data of ground settlement incurred by shield construction in soft clay area in Shanghai.

根据上海地区软土盾构隧道施工引起地面沉降的历时数据分析，深入研究了沉降与历时之间的关系。

Shield tunneling ; Ground deformation ; Analytical method ; Gap parameters

盾构隧道；地层变形；解析法；间隙参数

Based on uniform ground movement pattern of shield tunnel, two-dimensional analytical solution of soil deformation induced by shield tunneling construction is deduced; and the method is applied to different construction phases.

Loganathan等提出的研究方法，通过对Verriujt计算公式进行修正，推导得到盾构施工过程中由于土体损失引起的土体变形二维解，该方法适用于施工阶段。

This paper analyzed the influence and rule of the setting for the key parameters, constant set, and operator set in GEP and proposed an improved GEP algorithm. The new algorithm was applied in the tunneling fields, and got the horizontal and vertical ground settlement formulas of Double-O-Tube shield. The experiment shows that the mined formulas may match the real value quite well.

本文分析了基本的GEP算法中关键参数、常数集、符号集等设置对公式发现的影响和规律，提出了GEP算法的改进方法，并将其应用在隧道工程领域，得到了双圆盾构施工横向和纵向的地面沉降预测公式，与实测值的比较表明所发现的公式有很好的吻合度。

civil engineering and architecture construction ; shield tunnel ; ground settlement ; peck formula ; reliability

盾构施工过程中地表沉降的构成及其机理见表1[2]，表1中影响地表沉降的诸多因素都是随机的，若将确定的参数代入经验公式进行计算或进行数值模拟，所得的结果也是确定的数值，这样可信程度是很低的。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。