龙口矿区地表移动的参数识别与变形预报

针对地下开采引起的地表沉陷问题,根据矿区的实际地质条件建立了岩层的线弹性力学模型。编制了计算地表移动的有限元正算程序和优化程序,利用现代控制系统论方法和参数识别理论,由实测的地表移动值反算各岩层等效力学参数,并对本矿区其它采区的地表移动进行了变形预报,为矿区地面建筑物保护处理提供参考。

Identification of parameters and predication of displacements about ground subsidence in Longkou mining area

To counter the problem of ground subsidence caused by underground mining activities in Longkou Mine, this present paper firstly eastablishes a linear elastic mechanical model for rock strata according to the real geological environments and coded corresponding FEM program and optimized programs for the calculation of ground movements, then conducts back calculations of equivalent mechanical parameters of each stratum from in-situ measured ground movements using the method of systematic and control theory and the parameter identifying theory and finally makes a prediction of ground movement deformation of other mining areas. The results are of referential significance to the protection of ground buildings in the Mine.