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在竖井变形破坏的工程调查和总结研究的基础上,提出了徐淮地区竖井变形破坏“三因素缩合破坏”观点。即地质体薄弱部位、负摩擦力和水平荷载的综合作用。还进行了竖井变形破坏动力学过程的三维系统物理模拟实验研究,即地层失水沉降作用下,或水平地应力作用下;或失水沉降与水平地应力及重力共同作用下,研究土体浅部和深部变形时的土岩与井壁的相互作用,揭示了徐淮地区竖井变形破坏的机理,为防治竖井失稳提出了可靠的途径
Based on the investigation and summary of the shaft deformation and damage engineering, the author put forward the viewpoint of “three-factor condensation and destruction” of shaft deformation and failure in Xuhuai area. Namely the weak part of the geological body, negative friction and horizontal load of the combined effect. Also carried out a three-dimensional physical simulation of shaft deformation and failure kinetic process of experimental study, that is, under the effect of stratified water loss and sedimentation or horizontal stress; or water loss and sedimentation and horizontal stress and gravity together to study the shallow soil The interaction between the soil and the wellbore during the deformation of the Ministry and deep deformation reveals the mechanism of deformation and failure of the shaft in Xuhuai area and provides a reliable way to prevent the instability of the shaft.