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隧道建设（中英文） ›› 2018, Vol. 38 ›› Issue (9): 1566-1572.DOI: 10.3973/j.issn.2096-4498.2018.09.021
WANG Le
王乐
摘要：
In recent years, the Direct Pipe Construction Technology, as a new construction method and a new equipment in the international trenchless field, has gained advantages over the horizontal directional drilling (HDD) method where the construction site is limited, there is a big elevation drop between the launch and reception points, the burial depth of the pipeline is shallow, or the construction cost of the pipejacking is high. This method combines the characteristics of microtunneling and HDD. When the tunneling equipment is excavating, prefabricated pipes are laid by pipe thrusters simultaneously. The Wuding River Crossing Project of the 4 th ShaanxiBeijing Pipeline has a big elevation drop and a complex geology. The crossing project was carried out using the Direct Pipe method, which achieved a fast construction speed, simple construction process and less land occupation. The project has also achieved good economic and social benefits.
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