徐淮地区竖井变形破坏机理三维系统物理模拟实验研究

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.

The Research on the Deformation Mechanism and Physical Modeling 3D System of Shaft Failure in Xuhuai Area

Based on a though review of previous papers and in sitll investigation.The author ascribed the shaft deformation and failure to a complex contribution of three factors, namely geological weak position, negative friction, and horizontal loading.The second part of the paper concerns the physical modeling which has been used to verify the above mentioned mechanism.Stress distribution of the shaft and the interaction between the shaft engineering and its surrounding geological media are analyzed with 3D system physical models under various conditions.The author has proposed his integrated countermeasure for the special shaft deformation and failure.