一、工程概况文冲船厂三号坞位于船厂内东部原三期工程的旧址上,为挖入式布置,坞址已形成一开敞式的港池坞坑。本工程处于珠江感潮河段中,水位受潮汐和季节水位的双重影响,最大水位差3.55m,最大潮位差2.2m,最大流速0.676m/s;地质分布大致为:上层人工杂填土,厚1—9m;以下是淤泥、粘土,厚0.6—9.8m;风化层面厚约1m;以下是混合岩。地质分层情况如表1。 First, the project profile Wenchong Shipyard on the 3rd dock located in the shipyard east of the original three of the site of the former, digging layout, docking site has been formed an open harbor pits. The project is located in the tidal reach of the Pearl River. The water level is affected by both tides and seasonal water levels. The maximum water level difference is 3.55m, the maximum tidal potential difference is 2.2m and the maximum flow rate is 0.676m / s. The geological distribution is roughly as follows: Thickness 1-9m; the following is silt, clay, thickness 0.6-9.8m; weathered layer thickness of about 1m; the following is a mixed rock. Geological stratification is shown in Table 1.