基于协同理念的排土场边坡稳定初析

Preliminary Analysis of the Waste Dump Slope Stability Based on the Synergy Concept

基于排土场边坡内部系统及其与地基基础的协同作用机制,考虑露天矿山排土场在矿山生产中的重要地位,依托某一具体排土场工程实例,从协同作用角度出发,统筹分析坡体变形破坏机理基础上运用极限平衡和数值模拟法对该土场边坡协同稳定状态进行初析。结果表明:目前排土场边坡在天然工况满足协同稳定规范要求,但考虑降雨、地震荷载下表现出不稳定的因素,边坡破坏滑坡失稳表现为推移式,存在滑坡失稳的趋势,超出了协同作用的范围;为满足矿山经济性与安全性兼顾要求,从控制工程和抑制工程角度出发,通过滑坡体能量的释放与外界物质、信息和能量的交流及系统组织改造进而控制边坡体在协同稳定范围内,使滑坡体处于能量稳定状态进而实现边坡体稳定。

Based on the internal system of waste dump slope and its synergistic mechanism with foundation,considering the important position of open pit mine waste dump in mine production,and relying on a concrete project example of waste dump site,from the point of view of synergy,based on the analysis of slope deformation and failure mechanism,the ultimate balance and numerical simulation are used to analyze the cooperative stability of slope.The results show that the current dump slope meets the requirements of the stability standard under natural conditions,but considering the factors of instability under rainfall and seismic loads,which exceeds the scope of synergy and might result in a trend of landslide instability of progressive type.In order to meet the requirements of mine economy and safety,from the point of view of control engineering and suppression engineering,the slope body is controlled in a cooperative stable range through the exchange of energy release with external matter,information and energy,as well as the system organization transformation,which make the landslide in a stable state of energy and realize the stability of the slope.