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本文笔者把垂直并贯穿达地表面之张性裂缝作为格里菲思(Griffith)裂隙来考虑,从而研讨了在已给裂缝变形情况下的半无限地下介质中的应力场和地面形变.推导出了估计这些应力和变形的一系列公式.考查了地表面的变形和与裂缝的存在相伴随的应力降.关于裂缝的张开,假设按线性规律从裂缝的顶部到底部逐渐减小至零,而裂缝顶部开裂的宽度与裂缝深度比较,则认为相对地较小.
In this paper, the author considers the tension cracks perpendicular to and penetrating to the ground surface as the Griffith cracks to study the stress field and ground deformation in the semi-infinite underground medium which has been given the crack deformation. A series of formulas for estimating these stresses and deformations are examined, and the deformation of the ground surface and the stress drop associated with the existence of the fracture are examined. As for the crack opening, it is assumed that the crack is linearly reduced from the top to the bottom of the fracture to zero, The crack width at the top of the crack compared with the depth of the crack, then considered relatively small.