某金矿尾矿料动力特性变化规律及其机理  

Variation Law and Mechanism of Dynamic Characteristics of Tailings Material in a Gold Mine

作　　者：胡来平 陈世豪 HU Lai-ping;CHEN Shi-hao(Yuhang District Traffic and Transportation Administrative Law Enforcement Brigade,Hangzhou 311100,China;CCCC Second Harbor Engineering Company Ltd,Wuhan 430040,China)

机构地区：[1]杭州市余杭区交通运输行政执法大队,杭州311100 [2]中交第二航务工程局有限公司,武汉430040

出　　处：《建材世界》2024年第6期37-40,共4页The World of Building Materials

基　　金：中国交通建设集团青年创新项目(2020-ZJKJ-QNCX07);云南省交通运输厅科技创新示范项目(云交科教201915号)。

摘　　要：针对尾粉黏、尾粉土、尾粉砂开展一系列动力学试验,对比分析并探讨不同尾矿料的动弹性模量、阻尼比的变化规律及机理。结果表明:动弹性模量随围压和固结比的增大而增大,阻尼比则相反;相同围压和固结比下,尾粉砂的最大动弹性模量>尾粉土的最大动弹性模量>尾粉黏的最大动弹性模量,尾粉砂的最大阻尼比<尾粉土的最大阻尼比<尾粉黏的最大阻尼比;可用幂函数τ_(d)=AN_(f)^(B)来描述动剪应力与破坏振次的关系,其中A值随围压的增大而增大,B值随围压的变化规律不明显。A series of dynamic tests were conducted on tailings clay,tailings soil,and tailings sand to compare and analyze the changes and mechanisms of dynamic elastic modulus and damping ratio of different tailings materials.The research results show that the dynamic elastic modulus increases with the increase of confining pressure and consolidation ratio,while the damping ratio is opposite;Under the same confining pressure and consolidation ratio,the maximum dynamic elastic modulus of tailings sand>the maximum dynamic elastic modulus of tailings soil>the maximum dynamic elastic modulus of tailings viscosity,and the maximum damping ratio of tailings sand<the maximum damping ratio of tailings soil<the maximum damping ratio of tailings viscosity;a power function τ_(d)=AN_(f)^(B) can be used to describe the relationship between dynamic shear stress and failure vibration order,where the value A increases with the increase of confining pressure,and the change law of B value is not obvious with the increase of confining pressure.

关 键 词：尾矿料 动弹性模量 阻尼比 动剪应力 

分 类 号：TU41[建筑科学—岩土工程]