灰色系统理论在矿山围岩稳定性分析中的应用与实践

Application and practice of surrounding rock stability analysis based on Grayness System Theory

根据冬瓜山铜矿首采区采准巷道的布置和采矿方法,在首采区矿体的围岩、顶底板布置应力计和位移计仪器进行压力和变形监测,通过对地压的变化和巷道顶板沉降进行长期监测,掌握了采区应力分布特征及其发展变化趋势,并利用灰色系统理论对所监测的数据进行处理分析。监测结果表明,首采区巷道围岩状态稳定,应力监测值与应力增量都呈平稳趋势发展。灰色系统预测的数据表明,围岩应力的应力状态呈稳定趋势,巷道围岩处于稳定期。

According to the layout and mining methods of the firstly mined area in Dongguashan Copper Mine, the stress and dispiacement of the surrounding rock and its roof was monitored by strain gauges and displacement meter instrument. The strss distribution of mining areas and its development trends was mastered by long-term mo- nitoring for subsidence of roadway roof. After that, the monitoring data was analysed by making use of Grayness System Theory. The monitoring resuhs show that the rock of the firstly mined areas is stable, and the strss monito- ring values show a steady trend with its incremental value. The prediction data of Grayness System Theory shows that the state of wall rock stress is stable and wall rock of reoadway is in a stable period.