不同实验条件下金矿尾渣固结体物理力学特征研究  

Study on the Physical and Mechanical Characteristics of Gold Tailings Consolidation under Different Experimental Conditions

作　　者：王中美[1] 刘一凡 汤丹 冯泽鑫 WANG Zhongmei;LIU Yifan;TANG Dan;FENG Zexin(College of Resources and Environmental Engineering,Guizhou University,Guiyang 550025,China;College of Geology and Mapping,Tianjin Chengjian University,Tianjin 300384,China)

机构地区：[1]贵州大学资源与环境工程学院,贵州贵阳550025 [2]天津城建大学地质与测绘学院,天津300384

出　　处：《贵州大学学报（自然科学版）》2024年第5期58-63,共6页Journal of Guizhou University:Natural Sciences

基　　金：国家自然科学基金资助项目(42062016);贵州大学实验室开放资助项目(SYSKF2022-111)。

摘　　要：为了探究尾渣固结体充填进入矿坑后的物理力学特征以及尾渣固结体在不同水环境条件下的物理力学特征的变化,以贵州西南某金矿尾渣为研究对象,通过野外调查和采样的手段,设计静态浸泡和动态冲刷实验,采用多功能岩石低渗透仪、万能实验机进行金矿尾渣固结体样品的物理力学实验,利用Origin 2018软件和数理统计等方法,系统研究了金矿尾渣固结体物理力学特征。研究结果表明:在不同养护龄期条件下,养护龄期越长金矿尾渣固结体渗透率越小,单轴抗压强度值越大;在相同养护龄期不同水动力条件下,金矿尾渣固结体单轴抗压强度都出现降低的现象,且静态浸泡实验对固结体单轴抗压强度的影响明显小于动态冲刷。研究结果为金矿尾渣充填开采设计提供技术参数,同时也为充填采矿安全作业提供重要支撑。In order to explore the physical and mechanical characteristics of the tailings consolidation body after filling into the mine pit and the change of the physical and mechanical characteristics of the tailings consolidation body under different water environment conditions,taking the tailing of a gold mine in southwest Guizhou province as the research object,we designed the static soaking and dynamic scouring experiments by means of field investigation and sampling.The physical and mechanical experiments of solidified samples of gold mine tailings were carried out by using a multifunctional rock low permeability instrument and universal testing machine.And the Origin 2018 software and mathematical statistics were adopted.The physical and mechanical characteristics of solidified gold tailings were studied systematically.The results show that the permeability decreases and the uniaxial compressive strength increases with the increase of curing age.Under the same curing age and different hydrodynamic conditions,the uniaxial compressive strength of the consolidated body all decreases.And the effect of static immersion test on the uniaxial compressive strength of the consolidated body is obviously smaller than that of dynamic erosion to be stable.The research results provide technical parameters for the design of gold mine tailings backfilling mining,and also provide important support for the safety operation of backfilling mining.

关 键 词：金矿尾渣固结体 渗透率 单轴抗压强度 贵州 

分 类 号：TU502.6[建筑科学—建筑技术科学]