官地矿选煤厂槽仓高边坡变形机理及治理

High Slope Deformation Mechanism and Control for Trough and Bunker of Coal Washery Plant of Guandi Mine

官地矿选煤厂槽仓边坡从平场到材高+1 083 m平台间边坡坡顶出现数条宽约20 cm宽的裂缝,而该边坡下的工程尚未开挖,因此该边坡必须进行治理。基于边坡变形破坏机理不同,需相应地采用不同治理加固计算模式和治理方案。通过工程地质测绘、结构面统计分析和边坡的变形监测,得出了该边坡的主要变形破坏机理,即边坡变形破坏是岩土体顺自燃后的煤层座滑破坏。在此变形机理的基础进行了加固工程设计,从基坑开挖和变形监测结果分析,边坡加固效果良好。

There were several cracks with a width of about 20 cm occurred in the slope peat of the slope between the fiat park to ＋ 1083 m platform at the trough and bunker of the Coal Washery Plant in Guandi Mine. At the foot of the slope, there was an engineering not been excavated and thus the slope should be treated. Due to the deformation and failure mechanism of the slope different, different reinforcement calculation mode and treatment plan would be needed for the treatment. With the engineering geological mapping, structure surface statistic analysis slope deformation monitoring and measurement, the main deformation and failure mechanism of the slope were obtained. The deformation and failure were caused by the failure of the seam base after the spontaneous combustion of the rock and soil. The reinforcement engineering design was conducted based on the deformation mechanism of the bases. The analysis on the monitoring and measurement results from the base pit excavation to deformation showed that the reinforcement results of the slope were excellent.