水资源保护
水資源保護
수자원보호
WATER RESOURCES PROTECTION
2014年
3期
19-24
,共6页
后三峡工程时代%长江口水源地%盐水入侵%城市供水安全
後三峽工程時代%長江口水源地%鹽水入侵%城市供水安全
후삼협공정시대%장강구수원지%염수입침%성시공수안전
post-Three Gorges engineering era%water source zone in Yangtze Estuary%saltwater intrusion%urban water supply safety
在简述长江口盐水入侵主要影响要素与特性的基础上，对三峡水库运行以来长江大通水文站年径流量、月径流量的变化规律进行了简析，发现长江下游仍呈现典型丰、平、枯水年特征，其季节变化规律也十分显著。同时对后三峡工程时代的长江口水源地盐水入侵特征进行了研究，结果表明，枯水期水源地咸潮入侵与其发生首日的大通水文站前6日日径流量相关性相对较好；影响期一般在农历九月至来年四月间，尤以二月最为严重；各月呈现出以初八和廿二为“双驼峰”型的氯化物质量浓度峰值分布特性。提出了进一步减轻长江口盐水入侵对上海水源地供水安全影响的建议，包括采取加强流域与区域信息资源共享、北支控制工程联建、长江口水源地（水库群）联动开发等措施。
在簡述長江口鹽水入侵主要影響要素與特性的基礎上，對三峽水庫運行以來長江大通水文站年徑流量、月徑流量的變化規律進行瞭簡析，髮現長江下遊仍呈現典型豐、平、枯水年特徵，其季節變化規律也十分顯著。同時對後三峽工程時代的長江口水源地鹽水入侵特徵進行瞭研究，結果錶明，枯水期水源地鹹潮入侵與其髮生首日的大通水文站前6日日徑流量相關性相對較好；影響期一般在農歷九月至來年四月間，尤以二月最為嚴重；各月呈現齣以初八和廿二為“雙駝峰”型的氯化物質量濃度峰值分佈特性。提齣瞭進一步減輕長江口鹽水入侵對上海水源地供水安全影響的建議，包括採取加彊流域與區域信息資源共享、北支控製工程聯建、長江口水源地（水庫群）聯動開髮等措施。
재간술장강구염수입침주요영향요소여특성적기출상，대삼협수고운행이래장강대통수문참년경류량、월경류량적변화규률진행료간석，발현장강하유잉정현전형봉、평、고수년특정，기계절변화규률야십분현저。동시대후삼협공정시대적장강구수원지염수입침특정진행료연구，결과표명，고수기수원지함조입침여기발생수일적대통수문참전6일일경류량상관성상대교호；영향기일반재농력구월지래년사월간，우이이월최위엄중；각월정현출이초팔화입이위“쌍타봉”형적록화물질량농도봉치분포특성。제출료진일보감경장강구염수입침대상해수원지공수안전영향적건의，포괄채취가강류역여구역신식자원공향、북지공제공정련건、장강구수원지（수고군）련동개발등조시。
Based on the main impact factors and features of saltwater intrusion in the Yangtze Estuary , the variations of the annual and monthly average runoff at the Datong Hydrological Station on the Yangtze River since the beginning of operation of the Three Gorges Reservoir were analyzed .The characteristics of typical wet years , normal years , and dry years are shown in the lower reaches of the Yangtze River with significant seasonal variations.Meanwhile, the features of saltwater intrusion into the water source zone in the Yangtze Estuary in the era after the beginning of Three Gorges engineering were studied .The results show that , in dry seasons , the saltwater intrusion into the water source zone had a relatively close correlation with the daily runoff at the Datong Hydrological Station six days prior to the first day on which the intrusion occurred .The impact of saltwater intrusion can usually be seen from September to the following April , and especially in February , according to the Chinese lunar calendar .The chloride concentration peak showed a double hump-shaped distribution on the 8 th and the 22 nd of each lunar month .Some suggestions are given for reducing the impacts of saltwater intrusion in the Yangtze Estuary on the water supply safety in the water source zone of Shanghai City .These suggestions include promoting cooperation and sharing of information between river basin administrations and local departments , jointly building the controlling projects on the north branch of the Yangtze Estuary , and co-developing the water source zones ( reservoirs) in the Yangtze Estuary .
