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引用本文:刘宏伟,杜东,许静波,马震,赵青松,裴艳东,胡云壮,苗晋杰,白耀楠,张竞. 基于PSInSAR技术的山东半岛蓝黄交迭区地面沉降发育特征与影响因素识别[J]. 中国地质, 2018, 45(6): 1116-1127.
LIU Hongwei,DU Dong,XU Jingbo,MA Zhen,ZHAO Qingsong,PEI Yandong,HU Yunzhuang,MIAO Jinjie,BAI Yaonan,ZHANG Jing. Characteristics and affecting factors of land subsidence identification based on PSInSAR measures in Shandong Peninsula Blue-Yellow Overlapping Economic Zone[J]. Geology in China, 2018, 45(6): 1116-1127(in Chinese with English abstract).
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基于PSInSAR技术的山东半岛蓝黄交迭区地面沉降发育特征与影响因素识别
刘宏伟1, 杜东1, 许静波2, 马震1, 赵青松3, 裴艳东1, 胡云壮1, 苗晋杰1, 白耀楠1, 张竞1
1.中国地质调查局天津地质调查中心, 天津 300170;2.潍坊市国土资源局, 山东 潍坊 261000;3.河北省地矿局第五地质大队, 河北 唐山 063000
摘要:
研究区位于山东半岛蓝色经济区和黄河三角洲高效生态经济区的交迭地带,区位优势明显。地面沉降灾害的发生对该区规划建设和港口防潮堤高程构成了威胁,因此,全面了解该区地面沉降的发育特征,尤其是掌握地面沉降的主要影响因素极其重要。前人在不同时段内应用GPS和水准测量方法对该区局部地段地面沉降开展了相应研究,但未对全区地面沉降状况进行分析评价,尚不能有效支撑区域规划建设及地面沉降防控管理。文章在前人研究基础上,基于PSInSAR遥感技术分析了该区地面沉降速率及其变化状况,并与水准测量成果进行了对比。认为多年来该区地面沉降现象明显,超过75%的区域发生了不同程度的地面沉降,在寿光-广饶交界处、寿光-滨海开发区北部、寿光城区西北部和昌邑-滨海开发区北部等存在多个显著片区,且多年变化总体呈现加重趋势;区内存在16个沉降中心,最大沉降速率达到29~168 mm/a,沉降速率超过40 mm/a的占比达到62%以上,主要分布于研究区西部和西北部;该区地面沉降受区域构造、地层结构、地下水开采和地面荷载等因素影响,其中地下水开采是区域地面沉降发生的主致因素,地面荷载加强了局部地段的不均匀沉降程度,区域构造和地层结构为地面沉降发育和加剧提供了地质背景条件。
关键词:  地面沉降  PSInSAR  水准测量  评价  影响因素  山东半岛
DOI:10.12029/gc20180603
分类号:P542.3
基金项目:中国地质调查局项目(DD20160229,12120113003800)、国家自然科学基金项目(41602205)和中丹地质调查局国际合作项目(SUBSOL)联合资助。
Characteristics and affecting factors of land subsidence identification based on PSInSAR measures in Shandong Peninsula Blue-Yellow Overlapping Economic Zone
LIU Hongwei1, DU Dong1, XU Jingbo2, MA Zhen1, ZHAO Qingsong3, PEI Yandong1, HU Yunzhuang1, MIAO Jinjie1, BAI Yaonan1, ZHANG Jing1
1.Tianjin Center, China Geological Survey, Tianjin 300170, China;2.Weifang Bureau of Land Resources, Weifang 261000, Shandong, China;3.No.5 Geological Party, Bureau of Geology and Mineral Exploration of Hebei Province, Tangshan 063000, Hebei, China
Abstract:
The study area is located along the overlapping zone of the Shandong Peninsula Blue Economic Zone and the Yellow River Delta Highly Efficient Ecological Economic Zone, showing important location advantages. The occurrence of land subsidence disasters has posed threats to the planning and construction of the city and the tide dike height of the port. Therefore, it is utmost important to fully recognize the characteristics of land subsidence and, in particular, to identify the main factors affecting land subsidence. Previous researches have been mainly focused on partial area using GPS and leveling survey methods without covering the whole area, which cannot support the regional city planning efficiently. Based on previous researches, the authors used PSInSAR measuring to analyze the land subsidence rate and its variation in the whole region in comparison with the leveling survey results. The results show that land subsidence has been evidently covering 75 percent of the area in recent years where there have appeared several flat districts at the junctions of Shouguang-Guangrao, northern location of Shouguang-Binhai Development Zone, northwestern Shouguang downtown, and northern location of Changyi-Binhai Development Zone, and there is an increasing trend for the harm degree of land subsidence. There are 16 settlement centers whose maximum settlement rate has reached 29-168 mm/a, and the rates of 62 percent of centers exceed 40mm/a, which are distributed in the west and northwest of the study area. Fault structure, stratigraphic structure, groundwater exploitation and ground load are the influencing factors of land subsidence, among which groundwater exploitation is the main factor of regional land subsidence, and the ground load enhances the uneven settlement of local sections, while the fault structure and stratigraphic structure provide geological background conditions for the development of land subsidence.
Key words:  land subsidence  PSInSAR  leveling survey  evaluation  affecting factors  Shandong Peninsula