The underground pipeline cross interference of city road is an important factor which constrains the whole urban pipeline engineering construction.

城市道路地下管线交叉冲突，是制约整个城市管线工程建设的重要因素。

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The classification of rocks surrounding a tunnel has an important significance for guiding design and construction in underground engineering.

围岩分类对指导地下工程的设计和施工具有非常重要的意义。

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New pipe curtain method is detailedly dissertated, which can provide a reference to the selection of construction technology of underground engineering.

重点介绍超前预支护中新型的顶管加固法，为地下工程施工技术的选择提供参考。

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An example is engineering and construction group Balfour Beatty, one of the preferred bidders for London Underground PPP, which reported in August that PFIs underpinned its 17% rise in underlying profit growth.

BBC: Private company bonanza