大尹格庄金矿全尾砂胶结性能试验研究  

Experimental research on performance of cemented filling with unclassified tailings in Dayin'gezhuang Gold Mine

作　　者：丁明龙[1,2] 宋卫东[1,2] 江国建 吴锋 

机构地区：[1]北京科技大学金属矿山高效开采与安全教育部重点实验室,北京100083 [2]北京科技大学土木与环境工程学院,北京100083 [3]招金矿业股份有限公司大尹格庄金矿,山东招远265414

出　　处：《有色金属（矿山部分）》2014年第2期11-14,共4页NONFERROUS METALS(Mining Section）

基　　金：国家自然科学基金(51274023);中央高校基本科研业务费专项资金资助项目(FRF-SD-12-003A)

摘　　要：矿山全尾砂胶结充填技术可以有效地保护矿山有限的土地面积,降低尾矿库的库容压力,与此同时,也可以提高矿石回收率,降低损失率和贫化率,实现矿山无废排放。本次试验采用取自大尹格庄金矿的全尾砂为骨料,普通325#水泥为胶结剂进行相似材料试验,针对影响充填体强度的灰砂比、料浆浓度和龄期这三个因素进行沉降试验、塌落度试验和黏度试验。根据180个试块的抗压强度试验数据,分析得到充填体强度与以上三个因素的正相关关系,依据7d充填体的强度数据确定大尹格庄金矿的合理充填配比,为大尹格庄金矿充填采矿系统提供理论依据。The technology of mine cemented filling with unclassified tailings can protect limited land resources effectively, and reduce storing pressure of mine tailings. At the same time, it also can improve ore recovery and reduce ore loss and dilution, in order to realize no waste emission. This experimental study used the unclassified tail- ings from Dayin＇gezhuang Gold Mine as aggregate and the common 325~ cement as the cementing agent. The exper- iment include sedimentation test, slump test, and viscosity test, focusing on three factors influencing the strength of filling such as cement-sand ratio, slurry concentration and age. According to the compressive strength of 180 blocks experimental data, the result show the compressive strength of filling has positive correlation with all the three fac- tors. Based on 7 d compressive strength of the filling, a suitable filling mixing proportion for the Dayin＇ gezhuang Gold Mine is determined, and this provide a theoretical basis for the filling system.

关 键 词：全尾砂胶结充填 塌落度 黏度 抗压强度 

分 类 号：TD853.34[矿业工程—金属矿开采]