大红山铜矿1~#大沟废石场边坡稳定性现状评价

Evaluation on Slope Stability of 1~# Major Groove Dump in Dahongshan Copper Mine

1~#大沟废石场边坡的稳定性直接关系到周边设施和财产安全,因此其现状安全评价至关重要。1~#大沟废石堆场已经过近10年的运营使用,为了确保1~#大沟废石场后期的安全使用与边坡稳定,根据工程地质条件,采用有限差分程序FLAC2D和极限平衡Geo-slope对该废石场现状边坡进行了稳定性分析计算。现状模拟结果表明:在自然和地震工况状态下,1~#大沟废石场边坡满足安全等级要求,钢筋石笼拦渣坝抗滑稳定性、抗倾覆稳定性均满足规范要求,该废石场边坡处于稳定状态,具有一定的安全储备,说明该废石场当初的堆排设计方案具有一定的可行性和合理性,为1~#大沟废石场堆排以后的稳定状况和水土保持安全设施顺利通过验收提供了指导依据。

The stability of the rock slope of the 1^#major groove dump is directly related to the human s life and property in this area,so it is critically important to make the safety evaluation of the rock slope.The 1#major groove dump has been used for nearly 10 years.In order to ensure the safe use and slope stability of the 1#major groove dump in the long run,FLAC 2D and Geo-slope are used to simulate the stability of the waste rock dump slope according to the engineering geological conditions.Simulation results show that safety factors of the waste rock dump slope can meet the requirement of safety grade under the natural state and earthquake condition,at the same time the stability against sliding and stability against overturning of the blocking dregs dam also meet the requirement of the standard.So the dump slope is stable with some security reserve,which illustrates that the original design of heap row of the waste rock dump is feasible and rational to a certain degree.The research gives insight to analyzing the stability of 1#major groove dump and the check and acceptance of soil and water conservation facilities later on.