覆岩离层变形力学模型及应用

针对采动覆岩非同步弯曲而产生离层的特征及覆岩离层注浆减缓地表沉降新技术实施的急需,根据弹性力学理论,将离层岩层假设为岩板,研究其变形特性,真实地反映了离层岩板在水应平力和自重应力作用下变形的本质,并建立了岩板挠度的力学模型,其力学模型可推广应用于离层注浆条件下的离层岩板的挠度计算,为离层注浆新技术的应用提供可靠的理论基础。

Application of mechanical model to deformation of covered rock separation strata

To meet the need of applying the technology of layer separation grouting to slow down the surface subsidence,we study the law of the asynchronous bend of rock layers resuled in the layer separation.Based on the elastic theory,the deformation character of the layer separation is studied under the hypothesis that rock layers are treated as rock plate. Mechanical model for flexibility of rock boards is founded. The model factually reflects the deformation of rock boards under the action of the horizontal stress and self weight in essence. The model can be used to calculate the flexibility of the rock layers where layer separation grouting produce a condition of layer separation in ground. And the obtained result will provide a theoretical basis for the application of layer separation grouting to slow down the subsidence. 