运用相似模拟方法和动态测试手段，对机械设备无垫板安装二次灌浆层的变形进行了分期测试和研究，证明无垫板安装二次灌浆层具有长期承载和抵抗变形的能力。在测试数据的基础上拟合出的二次灌浆层变形的时变规律，以及二次灌浆层弹性模量随承载时间变化的定量公式，可作为无垫板安装的设备标高值变化的估计和预报方法 Using similar simulation methods and dynamic testing methods, the deformation and deformation of the secondary grouting layer without mechanical plate installation were staged and tested. It was proved that the secondary grouting layer without plate was capable of long-term bearing and deformation resistance. Based on the test data, the time-varying law of the deformation of the secondary grouting layer and the quantitative formula of the elastic modulus of the secondary grouting layer with the changing of bearing time can be used to estimate the elevation of the equipment without padding and Forecast method