Two methods " principle of three dimensional stress determination developed from the above four basic ones by yangtze river scientific research institute are presented , one based on hydraulic fracturing and hydraulic tests on preexistent fractures in single borehole , another one based on ckx - 97 hollow package 3 direction strain gauge 并对长江科学院完善的单钻孔中水压致裂法三维地应力测量和ckx - 97型空心包体式钻孔三向应变计的三维地应力测量的计算公式作了推导。
This dissertation performes an advanced analysis of oil geology , analysis of the history of geostress field in oil field , measuring of tectonic stress , tests of rock mechanics parameters , 3 - d fem ( finite element method ) numerical simulation for the field of geostress , numerical calculation for three dimensional fracture , analysis of relationship between geostress field and migration of oil and gas , analysis of relationship between fracture and migration of oil and gas , etc . and some great breakthrough has been done 本论文研究“三维应力场、裂缝及其与油气移聚关系” ，完成了深入细致的石油地质分析、构造应力场历史分析、地应力测量、岩石力学实验测试、三维应力场有限元法数值模拟、三维裂缝数值计算、应力场与油气运移、裂缝与油气运移综合研究工作，在基础理论探讨、技术方法创新、软件编制及综合应用等方面，均有较大的突破。
It is stated systematically in the thesis the method ' s theories and measuring principle of all kinds of geostress determination technology . in particular the four methods recommended in 1987 by the committee of test method of the international society of rock mechanics , i . e . two over - coring methods of strain relief in boreholes , hydraulic fracturing method and stress furbish measurement which measures the surface stress 本文较为系统地、全面地介绍了当前国内外通用的各种地应力测量方法的理论、测量原理；特别就国际岩石力学学会试验方法委员会于1987年推荐的4种地应力测定方法(钻孔孔径变形测量法、钻孔孔壁应变测量法、水压致裂法以及测量岩体表面应力的应力恢复测量法)作了较为详细的叙述。
