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地应力场是一个受多种因素相互作用与影响的复杂系统。这个系统包含相互联系的不同组成部分,如自重,构造运动作用,地形、地势等地貌情况,断层、裂隙等地质构造,地质力学参数等。地应力作为引起变形和破坏的基本作用力,不仅是引起岩体变形和破坏的力源之一,也是影响岩体力学行为的主要控制因素,是进行岩体工程问题分析、设计计算和稳定性预测评价的初始条件之一,因而在高地应力地区进行初始地应力场的特征分析是非常必要的。尽管可以通过现场实测地应力来直接准确地为地应力场提供数据,但由于现场实测地应力的测试费用昂贵、测试所需时间长和现场试验条件艰苦等原因,不可能进行大量的测量,因而利用有限的数据和科学的方法对研究区进行地应力场的反演分析十分重要,为实际工程活动提供可靠依据。
The geostress field is a complex system that is influenced by many factors. This system includes interconnected components such as gravity, tectonic movement, topography, topography and other geological conditions, faults, fractures and other geological formations, geomechanical parameters and so on. As a basic force that causes deformation and failure, ground stress is not only one of the sources of deformation and failure of rock mass, but also the main control factor that affects the mechanical behavior of rock mass. It is the basis for analysis of rock engineering problems, design calculation and stability Therefore, it is necessary to analyze the characteristics of the initial geostress field in the high stress area. Although the in-situ measured stress can be used to directly and directly provide data to the in-situ stress field, it is impossible to make a large number of measurements due to the high cost of field-measured in-situ stress testing, the long time required for the test and the difficult field test conditions. It is very important to use the limited data and scientific methods to carry on the inversion analysis of geo-stress field in the study area, and provide a reliable basis for the actual engineering activities.