启东东江船厂(中译英)20080222

四、厂址概况及自然条件（一）地理位置概况东江船厂厂址位于江苏省启东市惠萍镇长兴村，紧靠长江边,岸线处于三条港与吴沧港之间。

该位置属长江北支入海喇叭口北岸侧，距入海口约16km，5m 以上的水深通向黄海深水区。

长江下游北支河段的三条港，隶属长江口北支河段。

长江口北支历史上曾经是入海主泓，但18 世纪以来逐渐萎缩，目前北支已基本上不再是通航要道，主要起排水通道的作用。

1970 年江心沙北汊封堵后，北支河道进一步演变成为一条以涨潮流为主的河道。

（二）自然条件1、气象（1）气温多年平均气温：15.1℃极端最高气温：38.3℃(1978.7.9、1992.7.3.1)极端最低气温：-10.8℃(1958.1.16)1 月平均气温：3.O℃7 月平均气温：27.3℃≥35℃年最高平均天数：4.9 天高温日≥35℃年最多：20 天(1971)4. Site overview and natural conditions(1) Location overviewDongjiang shipyard is sited in Changxing, Huiping town, Qidong city, Jiangsu Province, which closes to the Changjiang River side. Its shoreline is located between Santiaogang and Wucanggang. The location lies on the north bank of the sea trumpet of the North Branch of the Changjiang River, which far away from the estuary about 16 km, the water deep than 5m is pass to deep-sea district the Yellow Sea. Santiaogang belongs to downstream of North Branch of the Changjiang River. In the history, North Branch of the Changjiang River once was main estuary. But gradually it had shrunken since the 18th century. Now North Branch has basically no longer a navigable channel, only being as a role of main drainage channel. Since North Branch stream of Jiangxinsha sand bar was closed at 1970, the North Branch River further educed to a river way mainly contains rising tide.(B) The natural conditions1.Weather(1) TemperatureAverage temperature for many years : 15.1 ℃Extreme highest temperature: 38.3 ℃(1978.7.9,1992.7.3.1)Extreme lowest temperature: -10.8 ℃(1958.1.16)Average temperature of January: 3.O ℃Average temperature of July: 27.3 ℃the highest average number of days of ≥ 35 ℃: 4.9 daysMaximum days of high temperature ≥ 35 ℃: 20 days (1971)（2）降水平均年降水量：1086.5mm最多年降水量：1574.1mm (1977)最少年降水量：596.4mm (1978)日最大降水量：195.Omm (1997.8.19)降水天数年最多：150 天(1957)最长连续降水天数：16 天(1992.3.13～3.28)≥0.1mm 年平均降水天数：125 天（3）雾日多年平均雾日为31.9 天，最多年雾日数58 天(1997 年)，最少年雾日数13 天(1975 年)。

（4）相对湿度多年平均相对湿度为81％，1 月平均相对湿度78％，7 月平均相对湿度85％。

（5）雷暴日多年平均雷暴日为30.6 天，最多年雷暴日为51 天(1963 年)，最少年雷暴日为17 天(1978 年)。

（６）最大积雪深度11 月份：0cm12 月份：3cm (1983.1 2.29)1 月份：13cm (1977.1.30)2 月份：8cm (1964.2.18／19)3 月份：8cm (1970.3.13)（７）最大冻土深度最大冻土深度为7cm(1977.2.17／18)。

(2) PrecipitationThe average annual precipitation: 1086.5mmThe maximum annual precipitation: 1574.1mm (1977)The minimum annual precipitation: 596.4mm (1978)The maximum daily precipitation: 195.Omm (1997.8.19)The maximum days of precipitation one year: 150 days (1957)The longest days of continuous precipitation: 16 days (1992.3.13 ~ 3.28)Days of average precipitation ≥ 0.1 mm per year: 125 days(3) Fog dayThe average fog day for many years is 31.9 days. The maximum fog days per year are 58 days (1997) and the minimum fog days per year are 13 days (1975).(4) Relative humidityAverage relative humidity for many years is 81%. The average relative humidity of January is 78%; the average relative humidity of July is 85%.(5) Thunderstorm dayThe average thunderstorm day for many years is 30.6 days. The maximum thunderstorm days per year are 51 days (1963) and the minimum thunderstorm days per year are 17 days (1978).(6) Maximum snow depthNovember: 0cmDecember: 3cm (1983.1 2.29)January: 13cm (1977.1.30)February: 8cm (1964.2.18/19)March: 8cm (1970.3.13)(7) Maximum frozen soil depthThe maximum frozen soil depth is 7 cm (1977.2.17/18).（8）风本地区春夏季多东风，冬季多东北风和西北风，历年最大风速18.Om／s(NNW NNE，1977 年9 月11 日)，历年极大风速26.0m/s(SE，1997 年8 月19 日)。

历年来本地区共受台风影响110 次，平均每年2.24 次。

台风风力一般为6～8 级，最大风力12 级。

受台风影响的月份一般为5～11 月份。

台风影响最早时间为5 月27 日(1961 年)，台风影响最晚时间为11 月9 日(1967 年)。

8) WindIn this region there mainly is east wind in spring and summer, northeaster wind and northwest wind in winter. The maximum wind speed is 18.0 m/s (NNW NNE, September 11, 1977); extreme wind speed is 26.0 m/s (SE, August 19, 1997). Over the years this region were affected 110 times by Typhoon, an average of 2.24 times a year. Typhoon wind scale generally is 6 to 8; the maximum wind scale is 12. The month affected by the typhoon generally is from May to November. The earliest day affected by Typhoon is May 27 (1961), the latest day affected by Typhoon is November 9 (1967).2、水文（1）基准面本工程高程基准面除特别注明外，均采用吴淞零点，当地各基面的关系见下图：国家高程基准面黄海平均海面吴淞零点理论基准面2. Hydrologic data(1) References levelWusong horizontal zero is adopted in elevation datum of this project except where noted particularly. The relationship of local base levels was shown as following figure:National Height Datummean sea level of Hangnail SeaWusong horizontal zeroTheory datum（2）特征潮位工程附近河段位于长江口段，北支的潮型呈不规则半日潮，潮周期平均为12 小时25 分，落潮历时长，涨潮历时短，且日潮不等。