预计法留设建筑物保护煤柱

Prediction method for building protective coal pillar design

留设建筑物保护煤柱是保护建筑物安全使用的重要手段,在分析常规煤柱留设方法局限性的基础上,为了解决传统留设建筑物保护煤柱方法的不足,给出了采用预计法留设保护煤柱的具体操作方法,通过地表移动变形与建筑物强度特性相结合,以具体计算变形指标值的影响距离来划定保护煤柱范围,既能有效保护建筑物,又能综合考虑采厚、多煤层开采的影响。同时,结合留设保护煤柱实例,分析了该方法的合理性和适用性。

Building protection coal pillar is an important way to ensure the building safety. Based on analysis of the limitations in conventional coal pillar design method,the paper proposed the prediction method of protection coal pillar design,combining the building strength characteristics with surface movement, to calculate the delineation of the protective coal pillar and define the scope of protection coal pillar,with consideration of both building protection,and the influence of mining thickness and multiple coal- seam mining. The rationality and applicability were analyzed combining with examples.