Application of non-excavation leveling headwork in pipe line laying .

非开挖水平导向钻进法在管道铺设中的应用。

Thus , the design is selected to build intake water control project of the canal headwork .

因此,本次设计为归流河灌区渠首取水枢纽工程.

This was accomplished by separating the project into two main parts ; the headwork and the irrigation system .

这个工程主要有主体挡水和灌溉两部分。