极不充分采动地表移动变形特点及预计

The characteristic and prediction of the surficial movement and displacement under the minimal working face mining

峰峰矿务局井田范围内村庄压煤量巨大 ,并已关系到矿井寿命 ,企业的可持续发展等重大问题 ,探索解决此问题的经验和措施意义深远。作者利用极不充分采动时地表移动变形值大幅度减小这一现象 ,解决了一些村庄下采煤问题 ,并取得了一定观测数据。本文就实测地表移动变形值的特征及预计计算等问题进行了分析与研究。研究结果认为 ,地表移动变形预计仍可以采用概率积分法 ,但应对下沉系数进行修正。

There are enormous coal pressed by villages in the field of Fengfeng Bureau of Mine, which is related to some great problems includes the mine's life span and the enterprise's sustainable development. Therefore, there are profound meanings in finding the experience and measurements which resolve these problems. Using the phenomenon that the surficial movement and displacement will greatly reduce under the minimal working face mining, the author has resolved some problems about coal mining under villages and obtained some measurement data. The article does some researches and analysis in the characteristics of the measured movement and displacement and the predication computation. The founding shows the prediction computation of the surficial movement and displacement still can employ probability integral method, but the subsidence coefficient should be amended. The article gives the amendment formula of the subsidence coefficient.