黄河三角洲地区地面沉降驱动因素研究  

Effective factors of land subsidence in the Yellow River Delta

作　　者：刘桂卫[1,2,3] 黄海军[1,2] 杜廷芹[4] 别君[2] 陈纪涛[5] 

机构地区：[1]中国科学院海洋地质与环境重点实验室,山东青岛266071 [2]中国科学院海洋研究所,山东青岛266071 [3]中国科学院研究生院,北京100039 [4]山东省环境保护科学研究设计院,山东济南250013 [5]黄河水利委员会山东水文水资源局,山东济南250010

出　　处：《海洋科学》2011年第8期43-50,共8页Marine Sciences

基　　金：国家自然科学基金(40676037);中国科学院重要方向项目资助(kzcx2-ew-207)

摘　　要：黄河三角洲地区地势低平、生态脆弱,地面沉降使得海水入侵和风暴潮灾害加剧。弄清该区域地面沉降驱动因素,对油田安全生产和湿地生态保护都有积极的意义。以20 m地层为界,将地面沉降驱动因素分为浅地层和深地层因素。分析了地表荷载增加、地下水和油气开采、沉积物固结压实、新构造运动等对该区地面沉降的驱动作用。此外,探讨了海平面上升和地震灾害对该区地面沉降的影响。结果表明:该区地面沉降驱动因素主要为沉积物固结和地下水开采,但控制范围存在区域性差异;1969年地震使该区产生明显地面沉降,海平面上升使该区地面沉降形势更加严峻。The Yellow River Delta with the low terrain has a fragile eco-system. Land subsidence has led to serious seawater intrusion and storm surge disaster. Studying the effective factors of land subsidence in the area is helpful for oil field safety and ecological conservation of wetland. With the 20 meters depth stratum as the boundary, the effective factors of land subsidence in the Yellow River Delta were divided into two categories, shallow and deep. The effective factors like the increased surface load, groundwater and oil exploitation, sediment consolidation, and neotectonics were discussed in this paper. Furthermore, the effects of sealevel rise and earthquake were also studied. Our results showed that sediment consolidation and groundwater exploitation, which dominated different areas subsidence, were the two main factors for land subsidence. The earthquake at 1969 had led to significant land subsidence, and sea-level rise made the subsidence situation more severe.

关 键 词：地面沉降 地下水开采 固结压实 黄河三角洲 

分 类 号：P642.5[天文地球—工程地质学] P642.26[天文地球—地质矿产勘探]