工程地质学报
     首页 |  期刊简介 |  编委会 |  投稿指南 |  期刊订阅 |  留言板 |  联系我们 |  广告合作 |  会议信息 |  English
工程地质学报  2018, Vol. 26 Issue (6): 1735-1742    DOI: 10.13544/j.cnki.jeg.2018-129
重大工程实践 最新目录 | 下期目录 | 过刊浏览 | 高级检索  |   
黑方台地表三维形变分析
王晨兴1, 谷天峰1, 张茂省2, 孔嘉旭1
1. 大陆动力学国家重点实验室, 西北大学地质学系 西安 710069;
2. 中国地质调查局西安地质调查中心, 国土资源部黄土地质灾害重点实验室 西安 710054
THE ANALYSIS OF THREE-DIMENSIONAL (3D) GROUND SURFACE DEFORMATIONS IN HEIFANGTAI PLATFORM
WANG Chenxing1, GU Tianfeng1, ZHANG Maosheng2, KONG Jiaxu1
1. State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi'an 710069;
2. Xi'an Center of Geological Survey, China Geological Survey;Key Laboratory of Loess Landslide, Xi'an 710054
 全文: PDF (4887 KB)   HTML( )   输出: BibTeX | EndNote (RIS)      背景资料
摘要 甘肃省永靖县黑方台属于典型的黄土台塬,其黄土具有较强的湿陷性,长期的大水漫灌引起厚层黄土发生严重的湿陷现象,进而诱发滑坡及严重的地面变形。本文以黑方台地表变形为研究对象,采用PS-InSAR技术对2014~2017年期间Sentinel-1 A卫星3条轨道的降轨数据进行处理,得到了不同视线(LOS)方向的变形,进而通过反演和计算得到该地区三维地表形变信息,分析了视线向、垂直向以及水平向的地表变形特征,预测了未来的发展趋势。结果表明:在靠近台塬中部区域以及塬边部分区域的视线向变形速率较大,沉降范围为4~13 mm·a-1;垂向变形较大的区域大都靠近台塬中部,平均变形速率为-20~-6 mm·a-1;整个台面南北向变形很小,平均变形速率为-5~5 mm·a-1,东西向变形较大,平均变形速率大都超过20 mm·a-1。研究区属于不均匀沉降区域;整体来看,研究区的地表变形在短期内仍然处于缓慢加速发展阶段,随着农业灌溉的持续进行,研究区地表变形速率达到一定值后会逐渐下降。
服务
把本文推荐给朋友
加入我的书架
加入引用管理器
E-mail Alert
RSS
作者相关文章
王晨兴
谷天峰
张茂省
孔嘉旭
关键词黑方台   PS-InSAR   三维地表变形分析     
Abstract: The loess has strong collapsibility in Heifangtai Platform, Yongjing Country, Gansu Province which belongs to a typical loess platform. Collapsible loess of thick layer caused by long-term flood irrigation has induced many loess landslides and severe ground deformations. We selected ground deformations in Heifangtai Platform as research object. The descending data of Sentinel-1 A satellite in three different orbits were processed using PS-InSAR technique between 2014 and 2017, and the deformation in different line of sight(LOS) is obtained. In addition, 3 D ground surface deformations was obtained by inversion and calculation in the area. Ground surface deformations of LOS direction, vertical and horizontal direction was analyzed, and the development trend of ground surface deformation was predicted. The results show there are differential settlements in study area. The deformation rates of LOS direction are larger in some area including closing to central area of platform and the part of area on the edge of platform. The range of settlement is 4~13 mm·a-1. A region with large vertical deformation is near the middle of platform. The average rate of deformation is-20~-6 mm·a-1. The North-South deformations are small. The average rate of deformation is-5~5 mm·a-1. However, the West-East deformations are large. The average rate of deformation is mostly more than 20 mm·a-1. Ground surface deformations are still at a slow acceleration stage in short term as a whole. With continuous development of agricultural irrigation, the rate of ground surface deformation will gradually decrease after rising a certain value.
Key wordsHeifangtai platform   PS-InSAR   Analysis of 3 D ground surface deformation   
收稿日期: 2018-03-26;
基金资助:国家自然科学基金面上项目(41772285)资助
通讯作者: 谷天峰(1978-),男,博士,副教授,主要从事工程地质与地质灾害防治研究及教学工作.Email:gutf@nwu.edu.cn     E-mail: gutf@nwu.edu.cn
作者简介: 王晨兴(1993-),男,硕士生,主要从事工程地质与地质灾害防治研究.Email:2587513102@qq.com
引用本文:   
王晨兴,谷天峰,张茂省等. 黑方台地表三维形变分析[J]. 工程地质学报, 2018, 26(6): 1735-1742.
WANG Chenxing,GU Tianfeng,ZHANG Maosheng et al. THE ANALYSIS OF THREE-DIMENSIONAL (3D) GROUND SURFACE DEFORMATIONS IN HEIFANGTAI PLATFORM[J]. Journal of Engineering Geology, 2018, 26(6): 1735-1742.
 
没有本文参考文献
[1] 亓星, 许强, 李斌, 彭大雷, 周飞. 甘肃黑方台黄土滑坡地表水入渗机制初步研究[J]. 工程地质学报, 2016, 24(3): 418-424.
[2] 罗浩, 伍法权, 常金源, 许江波, 包含. 黑方台马兰黄土固结条件下孔隙变化特征[J]. 工程地质学报, 2014, 22(5): 845-850.
[3] 胡炜, 张茂省, 朱立峰, 汪发武. 黑方台灌溉渗透型黄土滑坡的运动学模拟研究[J]. 工程地质学报, 2012, (2): 183-188.
[4] 陈春利, 邢鲜丽, 李萍, 李同录. 甘肃黑方台黄土边坡稳定性的可靠度分析[J]. 工程地质学报, 2011, 19(4): 550-554.
版权所有 © 2009 《工程地质学报》编辑部    京ICP备05029136号-13
地址:北京市朝阳区北土城西路19号  邮政编码:100029
电话:010-82998121 ,82998124   传真:010-82998121 Email:gcdz@mail.igcas.ac.cn