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根据激光散斑照相技术和应变花所测得的位移场和应力场， 深入分析了平面应力条件下闭合断续节理脆性岩体的变形和破坏特征， 揭示了裂纹扩展规律和破坏机理， 得出了这类岩体的初裂强度和贯通破坏强度表达式， 并将计算结果与试验结果进行了对比， 验证了所得公式的合理性。
Based on the displacement field and stress field measured by the laser speckle photographic technique and strain flower, the deformation and failure characteristics of the closed intermittent brittle rock mass under plane stress conditions were analyzed, and the crack propagation law and failure mechanism were revealed. The expressions of the initial cracking strength and penetration failure strength of this type of rock mass were compared with the experimental results and the rationality of the obtained formula was verified.