建筑群下覆岩加固协调开采减损方法

应用采动地表位移变形的极坐标模型,通过计算机预计模拟和全盆地位移变形等值线图优化分析,结合离层带注浆充填技术,得出采动对建筑物影响最小的工作面布置方式及其有关参数,通过改变工作面的布置方式和参数,有效地减少地表位移变形程度和控制覆岩下沉,从而达到保护建筑物,提高回采率的目的。这种方法安全、经济、技术管理简单可行。

Method of reducing damage for bolting overlying strata and harmonic extraction under buildings

A polar coordinate model is given by applying overlapping principle of the surface displacement and deformation caused by mining, and by optimizing the contours of the displacement and deformation of the overall basin with computer predicting simulation, and separated strata grouting technology, the layouts and parameters of the coalface to achieve a minimum inference on buildings are obtained. It can be effectively reduced the surface displacement and deformation and controlled the subside of separated strata with varying the layers and parameters of the coal face to protect surface buildings and to enhance the percentage of recovery. This is a safe, economical and simple method.