【作者】 汪华君；

【导师】 刘承论；

【作者基本信息】 山东科技大学 ， 采矿工程， 2003， 硕士

【摘要】 基于大量的实验室水压致裂法测量应力的实验，得到了大量的可靠实验数据和一些新颖的结论。试验用作模拟和检验不同钻孔倾角对裂隙产生和重张试验情况的影响，以及流体流速对重张实验的影响。基于对实验试件进行变形和简化处理，通过弹性力学的计算得到了计算最大主应力和岩石抗张强度的计算公式。为对实验结果和数据进行验证，本文应用三维有限元应力分析耦合准三维流体有限元分析，对试件受压致裂的情况进行了模拟，并得到了岩石试件变形的位移和流体流速。选择共轭梯度法解决由有限元法形成的大型稀疏矩阵方程，应用FORTRAN语言编制了数值模拟系统软件。更多还原

【Abstract】 Based on the large quantities of stress determination tests by hydraulic fracturing in laboratory, many reliable experiment data were obtained and meanwhile some new conclusions were brought forward. The tests were conducted to simulate and investigate the effects of varying borehole inclination with respect to the fracturing and to investigate the effects of varying pressurization flow rates to the reopening tests. Based on the transformation and simplification of the specimens, computation fomula of maximum principal stress and rock tensile intensity were deduced through the analysis of elasticity mechanics method. In order to verify the experimental results and data, the procedures of fracturing were simulated by using the three-dimensional stress analysis coupled with two-dimensional flow analysis, both analysis being through the finfte element method. Displacements and flow rates were achived at one time. Conjugate gradient method were choosed to solve the large sparse matrix equations induced by the FEM and computer language FORTRAN was used to programme the numerical simulation system software.更多还原