Rock mass engineering geological problem of bridge site in gorge slope reflect the discrepancy between human engineering activity and engineering geological conditions.

峡谷桥位斜坡岩体工程地质问题是人类工程活动与岩体工程地质条件之间矛盾的反映。

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The geological prediction of tunnel is an important problem for construction quality and safety, and also a difficult object for engineering geophysics.

隧道地质超前预报关系到隧道工程施工质量和安全，是国内外研究的前缘课题，也是工程地球物理研究中的疑难问题之一。

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But the poor geological adaptability, construction may face some problem, this paper discussed with an engineering example of shield method in urban subway construction strategies of the special area.

但其地质适应性太差，施工时会面临一些难题，本文结合工程实例探讨了盾构法在城市地铁特殊地段的施工对策。

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