When calculating the stress around a circular hole, the influences of hole shape under initial stress, the anisotropy of medium stress and the anisotropy of modulus on the extended direction of grout vein and the splitting pressure are studied. The deformed shape of the hole is first solved according to elastic theory, and on this basis, the complex variable function is used to map the external area of the elliptical hole to the interior of the unit circle to solve the stress around the elliptical hole. The results show that the shape of a circular hole under initial stress is the superposition of a circle and a cosine function; The position of the minimum tangential stress around the hole is the same as that of the round hole, that is, the position where is most easily split under the pressure inside the hole is the same as that of the round hole, but it needs more pressure; The example verifies that the splitting pressure is quite close to the actual value, which can basically meet the engineering application. This method can be used as the basis for further research in the future.
Liu Kuigang
,
Zhao Zhitao
,
Ye Xinfeng
,
Lan Yuchang
. Study on Grouting Splitting of Elliptical Hole in Anisotropic Soil[J]. Chinese Journal of Underground Space and Engineering, 2024
, 20(S2)
: 553
-559
.
DOI: 10.20174/j.JUSE.2024.S2.05
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