潼关高程演变中地壳运动作用及其定量研究

项目名称： 潼关高程演变中地壳运动作用及其定量研究

项目编号： No.51479163

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 水利工程

项目作者： 魏炳乾

作者单位： 西安理工大学

项目金额： 84万元

中文摘要： 潼关高程问题一直困绕着相关部门和地区。本研究以学科交叉方式，运用定量化、高精度的大地测量方法和手段，研究该地区地壳运动和变形对潼关高程演变所起的作用以及量值。首先收集该地区历史测量资料，包括民国时期的测绘资料、1950年之后国家一、二等水准网、地震水准网的数据以及近十几年来的高精度GPS测量数据；进而，进行两次地震测量网与水文站的精密水准和GPS联测；然后构建潼关周边的三维地壳运动模型，应用现代平差理论处理海量数据，分析研究区域三维地壳运动对潼关高程演变的影响规律。具体回答：该地区历史资料断代的衔接及转换，以揭示解放前、后潼关高程的演变情况；潼关块体垂向运动速度及水平方向运动状态；潼关块体与周边块体的相对变化关系；地壳运动对潼关高程演变的作用；以及应用大地测量方法研究潼关高程问题的适应性和作用等问题。研究成果可望揭示地壳运动在潼关高程演变中所起作用，为潼关高程问题的研究提供参考。

中文关键词： 潼关高程；地壳运动；河流演变；大地测量；定量

英文摘要： The related departments and regions have been plagued by the problem of Tongguan elevation rising. With the help of interdisciplinary, using the method of geodetic surveying which is a wide range applicated in high precision measurement，the role and its value which the crustal movement and deformation in Tongguan and its surrounding taking on Tongguan elevation evolution would be studied in this research. First of all, diferent kinds of measurement data ,such as the data measured before the liberation, and the first and second order leveling data after 1950,and high precision GPS data surveyed in recent 10 years would be collected. Secondly,two times measurements of precision level and GPS surveying are carried. Furthermore,by establishing the model of crustal movement in 3 demenssions with Tongguan and its surrounding, and applying modern adjustment theory, huge amounts of data obtained above would be processed and analyzed, the effect of Tongguan block movement in Tongguan elevation evolution is researched. The aims of this study are as following： establishing the relationship of the cohesion and transformation between different periods and different datum, expect to quantitative descript the evolution of Tongguan elevation before and after liberation. obtaining the vertical movement speed and the migration status in horizontal of Tongguan block. revolving the relative changes relationship between Tongguan block and its surrounding blocks. clarifying the role and its value of the plate movement taking on Tongguan elevation evolution. verifying the significance and the adaptability of applying geodetic surveying method to study the reason of Tongguan elevation rising. The results obtained are expected to reveal the role of the crustal movement taking in the evolution of Tongguan elevation, which provide scientific references for the further study of Tongguan elevation.

英文关键词： Tong-guan elevation;crustal movement;river evolution;geodetic surveying;quantification