(1. School of Mechanics and Civil Engineering，China University of Mining and Technology，Beijing 100083，China； 2. Wuhan Surveying-geotechnical Research Institute Co.，Ltd. of MCC，Wuhan，Hubei 430080，China)
Abstract：The perturbation solution of axisymmetric round well under unequal compression in two directions was studied. The elastic stress distribution considering the second order infinitesimal and analytic dynamics of elasto-plastic boundary line was raised，and the perturbation solution through engineering example was analyzed. Results show that elasto-plastic boundary line is similar to ellipse，tangential stress and radial stress are equal in certain angles，and the stabilized value of is greater than in-situ stress(). Research results are analyzed through the example of project，and compared with Д. А. Galindo solution to prove the reliability of the perturbation method，which are remarkably consistent.
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2014, Vol. 33 
