[an error occurred while processing this directive] [an error occurred while processing this directive] [an error occurred while processing this directive]
[an error occurred while processing this directive]

黄金科学技术 >

2022 , Vol. 30 >Issue 6: 912 - 922

DOI: https://doi.org/10.11872/j.issn.1005-2518.2022.06.116

采选技术与矿山管理

离子吸附型稀土矿剪切力学特性及微震信号特征

  • 王晓军 , 1, 2 ,
  • 钟启平 1, 2 ,
  • 胡凯建 1, 2 ,
  • 汪豪 1, 2 ,
  • 王宇 1, 2 ,
  • 李立浩 1, 2 ,
  • 冯亮 , 1
展开
  • 1. 江西理工大学资源与环境工程学院，江西 赣州 341000
  • 2. 江西理工大学江西省矿业工程重点实验室，江西 赣州 341000
冯亮（1990-），男，江西九江人，讲师，硕士生导师，从事地质灾害监测预警和微震监测研究与教学工作。

王晓军（1979-），男，山西晋中人，教授，从事矿山岩体稳定性分析与控制方面的研究与教学工作。

收稿日期: 2022-07-19

  修回日期: 2022-10-11

  网络出版日期: 2023-01-06

基金资助

国家自然科学基金项目“不同价态离子置换过程稀土矿体孔隙结构空间演化机制及渗流特性研究”(51874148)

“离子型稀土浸矿过程微细颗粒运动行为机理及调控方法研究”(52174113)

“崩塌落石微震信号衰减机制及物理参数反演分析研究”(42107182)

“原地浸出体系稀土离子运移过程再吸附行为机理研究”(51904119)

江西省杰出青年人才资助计划项目(20192BCBL23010)

江西省“双千计划”科技创新高端人才项目(jxsq2019201043)

收起

Shear Mechanical Properties and Microseismic Signal Characteristics of Ionadsorption Rare Earth Ore

  • Xiaojun WANG , 1, 2 ,
  • Qiping ZHONG 1, 2 ,
  • Kaijian HU 1, 2 ,
  • Hao WANG 1, 2 ,
  • Yu WANG 1, 2 ,
  • Lihao LI 1, 2 ,
  • Liang FENG , 1
Expand
  • 1. School of Resources and Environment Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China
  • 2. Jiangxi Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China

Received date: 2022-07-19

  Revised date: 2022-10-11

  Online published: 2023-01-06

Fold

本文亮点

为了研究稀土矿滑坡发生剪切破坏时的力学性质，以赣南离子吸附型稀土矿为研究对象，运用微震监测技术在室内环境下对重塑土试样开展了直接剪切试验，利用微震监测记录设备同步采集稀土试样试验过程中的微震信号，对以含水率表征的不同浸渗状态下试样的力学特性和微震信号特征进行了研究。结果表明：（1）随着试样含水率的增大，黏聚力显著下降，趋于饱和阶段时黏聚力下降速率减缓，由应变软化型转变为应变硬化型。（2）剪切过程波形幅值短时大幅提升，时频和波形图像对比分析表明存在微震信号且其主频率为10~20 Hz，含水率变化并不会影响信号主频；随着含水率的增加，剪切过程信号具有更高峰值振幅，整体释放能量增加，由主震型向群震型演变。研究结果可作为稀土矿发生滑坡破坏时微震信号的判别依据。

本文引用格式

王晓军 , 钟启平 , 胡凯建 , 汪豪 , 王宇 , 李立浩 , 冯亮 . 离子吸附型稀土矿剪切力学特性及微震信号特征[J]. 黄金科学技术, 2022 , 30(6) : 912 -922 . DOI: 10.11872/j.issn.1005-2518.2022.06.116

Highlights

The in-situ leaching process is used to mine ion-adsorption rare earth ore.Due to the infiltration and seepage of leaching solution，it is easy to induce landslide instability，and shear failure is considered to be the main failure mode.In order to study the mechanical properties of shear failure of the orebody landslide，the ion adsorption type rare earth ore was taken as the research object，and the microseismic monitoring technology was used to carry out the direct shear test of the remolded soil sample in the indoor environment.The mechanical properties and microseismic signal characteristics of the specimens under different impregnation state were studied，and the influence of water content on the shear strength of the samples and the change process of shear stress-displacement under different normal stress conditions during the shear failure process were obtained.At the same time，microseismic monitoring and recording equipment was used to collect microseismic signals in the test process of rare earth samples simultaneously.The frequency domain characteristics of the test microseismic data were obtained by fast Fourier transform of the signal based on Python open source software Scipy.The corresponding waveform，time-frequency and spectral images were analyzed to obtain the spectral characteristics of the microseismic signals and the energy distribution characteristics in the frequency domain during the shear process of samples with different water content.The results show that：（1）With the increase of water content，the cohesion of rare earth samples decreases，and the failure characteristics change from plastic failure to viscous failure，and the failure behavior changes from strain softening to strain hardening.For the samples with the same water content，the strain softening characteristics of the samples are more significant with the increase of the consolidation normal stress，and there is an obvious peak strength when the water content is low.（2）The background noise does not affect the results，and the amplitude of the microseismic signal jumped significantly in a short time during the shear process.The comparative analysis of time-frequency and waveform images show that the microseismic signal existes and the main frequency is 10~20 Hz，and the change of water content does not affect the signal main frequency.With the increase of water content，the shear signal has a higher peak amplitude，the overall released energy increases，and the main shock type changes to the group shock type.（3） The signal waveform and spectrum image reflects the rare earth sample shear energy evolution characteristics of upper and lower when the soil relative sliding，including extrusion，rupture，friction，collision between particles and the formation of crack behavior such as the release of the micro size of the strength of the shock wave energy and frequency distribution，microtremor signals as rare earth soil internal activities forward the external manifestations of form.The results can be used as the discriminative basis for the microseismic signal of landslide in ion-adsorption rare earth ore.

[an error occurred while processing this directive]

新疆有色获批成立战略金属产业创新研究院

12月5日，新疆维吾尔自治区工信厅发布《关于拟认定成立的新疆维吾尔自治区产业创新研究院的公示（第一批）》，新疆有色集团榜上有名，获批组建“战略金属产业创新研究院”。

2022年10月，新疆有色集团启动相关申报工作，期间努力克服疫情不利影响，通过申报书的编制及4次修改完善，同时吸取先进企业创新中心建设方案，最终定稿申报书并参与了线上汇报答辩。战略金属产业创新研究院是在自治区政府领导下，由新疆有色集团牵头，依托新疆有色金属研究所、新疆新鑫矿业股份有限公司、西部黄金股份有限公司等企业，会同新疆大学、中南大学、东北大学、矿冶科技集团有限公司、中国有研科技集团有限公司等高校、科研院所及企业集团共同组建，致力于打造“体系化、任务型、开放式”的创新联合体。

“战略金属产业创新研究院”的成立，将促进各类创新要素向企业集聚，以产业创新为引领、以技术转化为重点、以人才培养为支撑、以校企合作为基础、以产研融合为桥梁，构建产业技术创新和研发成果转化体系，形成“产业创新、科研应用、人才培养”融合新模式，推动产业链、创新链、人才链的协同发展，全面提升自治区有色金属产业竞争力。

脚注

中国有色金属报）

http://www.goldsci.ac.cn/article/2022/1005-2518/1005-2518-2022-30-6-912.shtml

参考文献

原文顺序 | 文献年度倒序 | 文中引用次数倒序
Berg N， Smith A， Russell S，et al，2018.Correlation of acoustic emissions with patterns of movement in an extremely slow-moving landslide at Peace river，Alberta，Canada［J］.Canadian Geotechnical Journal，55（10）：1475-1488.

Chen Fei， Wu Yaxing， Gao Yang，et al，2015.Application of composite soil retaining structure in prevention of rare earth mining landslide［J］.Journal of the Chinese Society of Rare Earths，33（6）：761-768.

Chen Qiao， Zhang Kuo， Chen Jilong，et al，2020.Experimental study on infrasound monitoring during soil shear failure［J］.Chinese Journal of Theoretical and Applied Mechanics，52（3）：877-889.

Chi Ru’an， Liu Xuemei，2019.Prospect and development of weathered crust elution deposited rare earth ore［J］.Journal of the Chinese Society of Rare Earths，37（2）：129-140.

Chi Ru’an， Tian Jun，2007.Review of weathered crust rare earth ore［J］.Journal of the Chinese Society of Rare Earths，（6）：641-650.

Cui Wenjie， Teng Pengxiao， Han Baokun，2018.Characteristics of infrasound signals just before landslide ［J］.Technical Acoustics，37（2）：157-162.

Dixon N， Smith A， Flint J A，et al，2018.An acoustic emission landslide early warning system for communities in low-income and middle-income countries［J］.Landslides，15（8）：1631-1644.

Dixon N， Spriggs M P， Smith A，et al，2015a.Quantification of reactivated landslide behaviour using acoustic emission monitoring［J］.Landslides，12（3）：549-560.

Dixon N， Smith A， Spriggs M，et al，2015b.Stability monitoring of a rail slope using acoustic emission［J］.Proceedings of the Institution of Civil Engineers-Geotechnical Engineering，168（5）：373-384.

Feng L， Pazzi V， Intrieri E，et al，2019.Rockfall seismic features analysis based on in situ tests：Frequency，amplitude，and duration［J］.Journal of Mountain Science，16（5）：955-970.

Fiolleau S， Jongmans D， Bièvre G，et al，2020.Seismic characterization of a clay-block rupture in Harmalière landslide，French Western Alps［J］.Geophysical Journal International，221（3）：1777-1788.

Gustafsson F，1996.Determining the initial states in forward-backward filtering［J］. IEEE Transactions on Signal Processing，44（4）：988-992.

Huang Wanfu， Zou Zhiqiang， Zhong Xiangxi，et al，2017.Occurrence characteristics and leaching rules of different weathering rare earth ores［J］.Journal of the Chinese Society of Rare Earths，35（2）：253-261.

Jiang Y， Wang G H， Kamai T，2017.Acoustic emission signature of mechanical failure：Insights from ring-shear friction experiments on granular materials［J］.Geophysical Research Letters，44（6）：2782-2791.

Lee G， Gommers R， Waselewski F，et al，2019.PyWavelets：A Python package for wavelet analysis［J］.Journal of Open Source Software，4（36）：1237.

Liu D L， Leng X P， Wei F Q，et al，2015.Monitoring and recognition of debris flow infrasonic signals［J］.Journal of Mountain Science，12（4）：797-815.

Nanjing Hydraulic Research Institute，1999. Specification of soil test：SL/T 237-1999 ［S］.Beijing：China Water & Power Press.

Sun L J， Wu H G， Cheng Q H，2019.A multilayer shear model box with vertical loading for determination of soil shear strength changes following earthquakes［C］//International Conference on Geotechnical and Earthquake Engineering 2018.Chongqing：Chongqing University. DOI：10.1061/9780784482049.061

Vouillamoz N， Rothmund S， Joswig M，2018.Characterizing the complexity of microseismic signals at slow-moving clay-rich debris slides：The Super-Sauze（southeastern France） and Pechgraben （Upper Austria） case studies［J］.Earth Surface Dynamics，6（2）：525-550.

Yfantis G， Pytharouli S， Lunn R J，et al，2020.Determination of the seismic signatures of landslides in soft soils：A methodology based on a field scale shear box［J］.Engineering Geology，279：105853.

Yfantis G， Pytharouli S， Lunn R J，et al，2021.Microseismic monitoring illuminates phases of slope failure in soft soils［J］.Engineering Geology，280：105940.

Zhang Lian， Wu Kaixing， Chen Lingkang，et al，2015.Overview of metallogenic features of ion adsorption type REE deposits in southern Jiangxi Province［J］.Journal of the Chinese Society of Rare Earths，33（1）：10-17.

Zhou Lingbo， Wang Xiaojun， Huang Chengguang，et al，2020.Experimental research on mechanical properties of ion adsorption rare earth in leaching process［J］.Chinese Rare Earths，41（1）：26-36.

陈飞，吴亚星，高阳，等，2015.复合挡土结构在稀土矿山滑坡防治中的应用研究［J］.中国稀土学报，33（6）：761-768.

陈乔，张阔，陈吉龙，等，2020.土剪破坏次声监测试验研究［J］.力学学报，52（3）：877-889.

池汝安，刘雪梅，2019.风化壳淋积型稀土矿开发的现状及展望［J］.中国稀土学报，37（2）：129-140.

池汝安，田君，2007.风化壳淋积型稀土矿评述［J］.中国稀土学报，（6）：641-650.

崔文杰，滕鹏晓，韩宝坤，2018.土质滑坡临滑前次声信号特征研究［J］.声学技术，37（2）：157-162.

黄万抚，邹志强，钟祥熙，等，2017.不同风化程度离子型稀土矿赋存特征及浸出规律研究［J］.中国稀土学报，35（2）：253-261.

南京水利科学研究院，1999. 土工试验规程：SL/T 237-1999 ［S］.北京：中国水利水电出版社.

张恋，吴开兴，陈陵康，等，2015.赣南离子吸附型稀土矿床成矿特征概述［J］.中国稀土学报，33（1）：10-17.

周凌波，王晓军，黄成光，等，2020.浸矿过程中离子吸附型稀土矿力学特性实验研究［J］.稀土，41（1）：26-36.

Options
文章导航

/

〈 〉

[an error occurred while processing this directive]