珠江口海底隧道盾构法施工方案可行性分析

Feasibility analysis of the option of shield boring for the undersea tunnel at Zhujiang river estuary

盾构法已经在国内外的地下工程中被广泛运用,特别是国外一些著名的海底盾构隧道,如英吉利海峡隧道、日本东京湾海底公路隧道、荷兰W esterschelde隧道;国内盾构技术也发展迅速,先后建成上海大连路、复兴东路过江盾构隧道,还有在建的上海翔殷路越江公路隧道、上中路隧道和已经开工建设的武汉、南京、上海长江桥隧工程等。这些海底、江底隧道的修建为盾构隧道的发展积累了丰富的经验。文章首先论述了国内外大直径、高水压、长距离推进等盾构施工关键技术,并结合珠江口海底隧道的建设条件与国内外的施工成功实例,对海底隧道盾构法施工方案的可行性进行了初步研究。

Shield tunneling has been adopted widely in underground works all over the world, especially for subsea tunnels such as Channel Tunnel, Tokyo Bay undersea highway tunnel, Holand Westerschelde tunnel. Shield tunneling technique in China has made big progress in recent years. Dalian Road and Fuxing East Road river -crossing tunnels in Shanghai have been constructed. Shanghai Xiangyin Road highway tunnel and Shangzhong Road tunnel are under construction. Wuhan, Nanjing and Shanghai Yangtze River tunnels are also under way. Construction of the undersea and river - crossing tunnels has accumulated plenty of experience for the development of shield tunnelling. The paper describes the shield tunneling techniques for large diameter tunnels, tunnels under high water pressure and for long distance boring all over the world, then according to the construction condition of Zhujiang river estuary tunnel discusses the feasibility of shield boring for this undersea tunnel.