Finally, several control measures are proposed to avoid failure for long-distance linear and curvilinear pipe jacking construction.
提出了长距离直线和曲线顶管施工防止管道失稳的控制措施。
It shows that the ground settlement produced by middle zone is greater because of double disturbance during parallel pipe jacking construction.
研究结果表明，水平平行顶管施工时中间区域受到双重扰动，产生的地面沉降较大。
It is shown that the ground settlement produced by middle zone is greater because of double disturbance during parallel pipe jacking construction.
分析表明，水平平行顶管施工时由于中间区域受到双重扰动，会产生较大的地面沉降。
As is shown in analytical calculation, ground deformation induced by pipe jacking construction is three-dimensional and changing with the jacking-in of shield.
算例分析表明，顶管施工引起地面产生三维变形，随着掘进机的顶进而不断产生变化。
Pipe jacking construction disturbs soil inevitably, which would results in soil deformation and does harm to its surroundings.
顶管施工对土体扰动是不可避免的，土体变形是土体受扰动的结果，而土体变形则会对周围环境造成危害。
Pipe jacking construction disturbs soil inevitably, which would results in soil deformation and does harm to its surroundings.
顶管施工对土体扰动是不可避免的，土体变形是土体受扰动的结果，而土体变形则会对周围环境造成危害。
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