二维离散单元法在某旧金属矿改造边坡稳定性研究中的应用  

Application of Two Dimensional Discrete Element Method to the Slope Stability Analysis of an Exhausted Metallic Mine

作　　者：董梦龙[1] 李运胜 李雨坤 

机构地区：[1]河海大学地球科学与工程学院,江苏南京210098 [2]浙江省地矿勘察院,浙江杭州310013

出　　处：《中国钨业》2017年第1期29-35,共7页China Tungsten Industry

摘　　要：金属矿山露天开采后将形成规模较大的边坡,如何处理利用废弃矿山的边坡资源是提高国土资源利用的重要途径。本文以某金属矿山废弃采坑边坡为例,利用二维离散单元法研究其稳定性。该矿山边坡为岩质边坡与松散堆积体(尾矿)的结合体,局部为陡崖和陡坡,工程地质形态复杂。研究选取了2个具有代表性的剖面,分析计算了天然工况、暴雨工况和地震工况下的边坡稳定性,得出相应的稳定系数,并预测了边坡可能发生的失稳模式,并提出了相应的治理意见。研究表明,二维离散单元法能适用于复杂形态下的边坡稳定性分析,并可作为条分法计算的重要补充。The recycle of slope resources in the exhausted metallic mines is an important way to improve the use of land resources. This paper studies the stability of the abandoned slope in metallic mine by applying two-dimensional discrete element method.The mine slope is a combination of rock slope and loose accumulation body （tailings） with complex engineering geological form. After choosing two representative profiles, we calculate the corresponding slope stability coefficients under the conditions of norm, rainstorm and earthquake. The potential slope instability modes and corresponding treatment technologies are predicted. The results show that the two-dimensional discrete element method, as an important supplement to the calculation of strip method, can be applied to the stability analysis of slope under complex form.

关 键 词：采坑边坡 稳定分析 二维离散单元法 

分 类 号：TD854.6[矿业工程—金属矿开采]