[提要]  濒临海边的深基坑，地层含水量高，渗透性大，易受海水渗透影响，在这类基坑中应用预应力锚杆技术困难极大，鲜有成功的工程经验。在厦门邮电大厦深基坑支护的预应力锚杆工程中，采用一种“孔口堵水注浆”的施工方法，取得成功，可为类似工程提供借鉴。
[关键词]  深基坑 预应力锚杆 海水渗透 孔口堵水注浆

It is difficult to use pre-stress anchor technique to the deep excavation pit on the coast, in which the straum is highly filled with water and subjected to the penetration of sea water, therefore there is no successful expenience. But now, successful application for the pre-stress anchor technique in the same case has been gained by use of one construction method of "orifice ponding pouring" in the deep excavation pit supporting in Xiamen Postal Edifice, which can be taken for example on similar engineerings.
Keywords:  deep excavation pit; pre-stress anchor; penetration of sea water; orifice ponding pouring