本合同段控制性关键工程是预应力砼连续组合箱梁的施工。
The controlled crucial works for this contract section is the construction for the prestressed concrete continuous combined box beam.
但碍于岩土与地下连续墙复杂相互作用的不确定性及施工过程的不可控制性，环形地下连续墙的空间协同受力的优点一直被忽视。
But the advantage of spatial influence of annular underground diaphragm wall was usually ignored due to the uncertainty of soil-wall interaction and uncontrollability of construction process.
人为控制性放气是杭州地铁工程施工前防治浅层气地质灾害的必要措施。
The artificial control of pre-exhausting shallow gas is a necessary measure for preventing geological disasters before the construction of Hangzhou Metro.
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