结合深厚表土中井壁破裂后采用卸压法进行治理的实际工程 ,在数值模似计算和物理模似试验研究成果的基础上 ,通过现场实测对“卸压治理技术”的长期效果进行研究 ,得到卸压法治理破裂井壁各阶段中井壁内部应力、应变的动态变化规律和卸压槽压缩量的变化规律 ,归纳出卸压法治理井壁破裂的力学机理 ,为卸压法治理井壁破裂提供了理论依据和工程参数。 Based on the results of numerical simulation and physical simulation tests, the long-term effect of “pressure relief treatment technology” was studied through the field test combined with the actual project of pressure-relief method after the wellbore was broken in the deep topsoil. Pressure relief method is used to control the dynamic variation law of internal stress and strain in wellbore wall and the variation of pressure relief groove in each stage of ruptured wellbore. The mechanics mechanism of pressure relief treatment of wellbore rupture is summarized. Provides the theoretical basis and engineering parameters.