ボアホール周壁の破壊に関する破壊力学的研究 (第2報)
地圧測定に対する応用
1977 年 93 巻 1074 号 p. 561-566
詳細
1977 年 93 巻 1074 号 p. 561-566
In this report, the authors discuss on the fracture around a borehole under the biaxial compression and hydrostatic internal pressure.
The theory of linear fracture mechanics is applied to the shear fracture of borehole-wall, which is sometimes observed in the borehole drilled in the high stressed rockmass.
Then, the authors discuss on the application of hydrofracturing method to the measurement of in-situ rock stress, from the point of view of linear fracture mechanics. Theoretical analysis revealed some problems to be verified by some field and laboratory tests.
