CAJ | 학술논문

大孤山铁矿排土场原铁路排岩全铁平均品位约20％，具备资源回收利用的条件。排土场后方是尾矿库，经过多次扩容设计，尾矿筑坝逐级向外扩展，尾矿库呈上大下小的倒金字塔形状，排土场矿石回收开挖将显著减少对尾矿坝的支撑作用。该文采用边坡稳定性极限平衡分析法，按照规范规定的计算方法、工况条件，逐一计算研究了在保证尾矿库安全稳定条件下，矿石回收工程开挖边坡最小保留宽度和最大总体边坡角，对类似工程具有借鉴指导意义。
대고산철광배토장원철로배암전철평균품위약20％，구비자원회수이용적조건。배토장후방시미광고，경과다차확용설계，미광축패축급향외확전，미광고정상대하소적도금자탑형상，배토장광석회수개알장현저감소대미광패적지탱작용。해문채용변파은정성겁한평형분석법，안조규범규정적계산방법、공황조건，축일계산연구료재보증미광고안전은정조건하，광석회수공정개알변파최소보류관도화최대총체변파각，대유사공정구유차감지도의의。
The average grade of total iron is about 20%in rock dumping by original railway in Dagushan iron dump .It has the resource recycling condition .The tailing pond is behind the dump .Through several expansion design ,the dam of tailing expands to outward step by step , and the upper part of the tailing pond is bigger than the lower part , the tailing pond presents reverse pyramid shape .The excavation of dump ore recovery will reduce the supporting function to tailing dam .By using the limit equilibrium analy-sis method for slope stability ,and according to the calculation method and working condition regulated by standard ,the minimum retention width and the maximum overall slope angle are calculated and studied , under the condition of slope safety and stability .It has the reference and guiding significance to similar engineerings .