基于Wilson理论的条形矿柱稳定性分析

Stability analysis of strip-shaped pillar based on Wilson theory

为了研究条形矿柱稳定性影响因素,考虑矿岩抗压强度、采深、矿房宽度、矿柱宽度及矿柱高度五个影响因素,基于威尔逊理论,应用正交试验,确定影响矿柱安全系数的主要因素及其主次顺序。结果表明:1)矿柱安全系数主要受矿岩抗压强度、采深、矿房宽度及矿柱宽度四个因素影响,且影响因子主次顺序为:矿柱宽度>矿岩抗压强度>采深>矿房宽度;2)矿柱安全系数与矿岩抗压强度、矿柱宽度呈线性正相关,与采深、矿房宽度呈多项式负相关;3)通过回归分析,建立了矿柱安全系数与各主要因素之间的简化公式,并将某金矿采场参数代入公式进行检验,计算结果较为可靠,能为现场生产提供一定的依据。

In order to study the impact factors of pillar stability, considering uniaxial compressive strength olpillar mining depth, room width, pillar width and pillar height, based on Wilson theory, the orthogonal experimentis applied to identify the main impact factors of pillar safety coefficient and the sequence of these factors. The resultsshow that： 1）The safety coefficient of pillar is mainly influenced by pillar width, the uniaxial compressive strengthof pillar, mining depth and room width. The sequence of the factors is listed from the most to least： pillar width,the uniaxial compressive strength of pillar, mining depth, room width 2）The safety coefficient of pillar is linearpositive correlations to the uniaxial compressive strength of pillar and pillar width, while polynomial negative corre-lations to the mining depth and the room width. 3）According to regression analysis, the simplified formula betweenthe safety coefficient of the pillar and the main impact factors is established. Introducing stope parameters of onegold mine to the simplified formula, the calculation results are reliable and can provide basis for the field.