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近二十年来,开采地面建筑物的保安煤柱得到很大的发展。这主要是由于地表移动预计方法的改进而发展起来的。近几年来,开采井筒保安煤柱也越来越常见,这就迫使人们研究新的预计方法,用于计算井筒附近岩层内部的位移和变形,并尽可能地达到较高的精度。越来越多的井筒煤柱开采的实践使我们能够检验位移和变形预计的精度,并能改正预计时采用的参数值。
For nearly two decades, the security pillars for the exploitation of ground structures have been greatly developed. This is mainly due to the improvement of the surface movement prediction method. In recent years, it has become more and more common to mine wellbore pillars, forcing people to study new prediction methods for calculating displacements and deformations within the rock formation near the wellbore and to achieve as high a degree of accuracy as possible. The increasing practice of wellbore mining allows us to verify the predicted accuracy of displacements and deformations and to correct the parameter values used in the prediction.