中文摘要：

姑婆山花岗岩体的断裂构造系统具有多层环形构造与密集的放射状断裂构造穿插组合,放射状断裂构造的长度密度分布依方位角区间而异的复杂构造样式。为定量研究这种构造样式的方向特征,以3种空间分辨率尺度的卫星遥感影像——资源-2号、Aster和ETM＋数据为信息源,对岩体遥感线性特征开展了依SN、NE、NW、EW方向的分解提取,在4个方位角区间内共解译线性构造2 513条,总长度为1 997.76 km。在此基础上,开展了线性构造方向密度分割、方向趋势分析和3D数字模拟定量遥感分析,并以线性构造等密度第10次趋势面类比模拟岩体断裂构造应力场分布,分析了张应力致断作用过程,探讨了不同走向断裂构造密度分布与致断张应力场作用方向的关系。研究表明,姑婆山花岗岩体断裂构造高密度区围绕花岗岩体呈不均匀环形分布,以岩体SE部位的密度强度和范围最大,方向密度分布的优势排序为：NE走向（最优势）→NW走向（优势）→EW走向（一般优势）→SN走向（无优势）。岩体内部致断应力场方向与断裂构造走向呈正交关系,分别具有EW、NW、NE、SN方向的趋势矢量方向。这些特征为判定姑婆山花岗岩体成岩受力环境提供了证据。

英文摘要：

The fault structure system of Guposhan granite body is possessed from a structure fashion of complex combination as the serried radial faults insert into the ring structures of multiple layers each other so that their distribution of the density in length is different in the light of the azimuth interval.By decomposing and extracting the linear structures in the four directions of trend of SN,NE,NW and EW respectively,which are from the remote sensing image of three satellites（Resource-2 of China,Aster of Japan and ETM＋of USA） with the size of spatial solutions,2 513 linear structures are got in the four directions and 1 997.76 km in length through interpreting multi-size quantitative remote sensing images from China＇s Resource 2,Japan＇s Aster and ETM＋of USA for investigating the directional distribution characteristic of these structures.Based on all above,the quantitative remote sensing analysis is completed for the remote sensing linear structures（directional density slice,directional trend analysis and 3D digital model）.By choosing the tenth power trend surface of the density image of the fault structures as a simulation for distribution of density of the true fault structures,the relations between the density distribution in every strikes and fault tensile stress are discussed.It shows that the high density areas of the faults distribute around the granite body in unsymmetrical ringlike.The range of the high strength and the density is located in the southeast part of the granite body.The sequencing of dominant directions of the fault structures in Guposhan granite body is as following： the first is NE,ascendentest;the second is NW,ascendent;the third is EW;weak ascendent is the fourth,SN,inferior.There is an orthogonal relation between the direction of the fault tensile stress and the trend of the fault structure in the granite body,presenting respectively directions of trend vector in EW,NW,NE and SN.These characteristics provide a powerful proof for deciding the forcing environment durin