摘要
南水北调中线工程天津干渠1：5万遥感综合地质图中所表示的丰富的第四纪内容，是遥感、计算机图像处理这一高新技术与常规地质普查紧密结合的产物。根据遥感影像特征和野外实地调查，区分出不同的岩性特征和接触关系，将徐水至天津市杨柳青划分为11个沉积单元，本文以其中的4个单元为例对其岩性特征、遥感影像特点和工程地质特性作一简要介绍，并扼要地介绍了遥感图像处理的过程。
In order to alleviate the shortage of water resource in North China such as Beijing, Tianjin and Hebei Province, the state project of NorthWard Diversion Works from Changjiang River has been started for several years. The Tianjin TrUnk Canal is an important part of this great project. It starts from Taihangshan Mountains and ends at Yangliuqing county of Tianjin, running acrossing the North China Plain from westto east. There are tWo major morphologic units in the area. The west area is hill county which is a part of Taihangshan Mountains. It is mainly consisted of limestone and dolomitite formed in Cambrian or Precambrian period. Controlled by north－－east or northWest faults, the mountains appear mostly to be small scale fault－－block mountains.Intermountain basins and wide ravines are formed among them, in which Quaternarydeposit are accumulated. Pluvial fans and talus aprons appear along the edge of basins or the sides of ravines. Gullies developed at the surface of pluvial fans illustrate that the area is still uplifted slowly. The east area is the NOrth China Plain,and in the west of it is piedmont pluvial plain. So the slope fells gradually towardeast.For the Purpose of providing the project with geological data in relatively shortperiod, we use the method of combining remote－－sense image processing with conventional geological survey. It is a scientific and accurate way. A great deal of geological information obtained from the remote－－sense image processing is used to direct the field work, and varies geological data, such as lithologic characters, genetic types and contact relationship, have provided reliable content to the remote－－senseimage and image pytters. The geological characters, remote－－sense image features and engineering properties of four of the eleven Quaternary lithologic units illustrated in generalized remote－－sense geologic map of Tianjin Trunk Canal are showed in this paper. The application of remote－－sense processing is briefly explained as well.TM image i
出处
《第四纪研究》
CAS
CSCD
北大核心
1999年第3期254-259,共6页
Quaternary Sciences
基金
"南水北调中线工程天津干渠段1:5万遥感综合地质调查"项目
关键词
南水北调
遥感
图像处理
第四纪
地质调查
Northward Diversion Works from Changjiang River
remote-sense image processing
Quaternary geological investigation
