保护煤柱外开采引起立井的变形和破坏,按其破坏原因可划分为二种类型:保护煤柱尺寸不足引起的变形与破坏;煤柱岩体滑移引起的变形与破坏.本文讨论了工业广场煤柱岩体滑移的机理,建立了滑移模型。在此基础上,提出了判定工业广场煤柱岩体稳定及估算工业广场煤柱滑移趋势的公式,并用实测资料对公式进行了检验. According to the causes of failure, there are two types of deformation: the deformation and failure caused by the insufficient size of coal pillar and the deformation and destruction caused by the slip of coal pillar. This paper discusses the industrial The mechanism of sliding of pillars in the square pillars was established and the slip model was established. On this basis, the formula for judging the stability of pillar pillars in Industrial Plaza and the trend of pillar slippage in Industrial Square were put forward. The formulas were tested with the measured data.