煤炭采空区触变性钼尾矿充填浆液配比研究  

Study on the ratio of filling slurry of thixotropic molybdenum tailings in coal goaf

作　　者：李伟 高山[2,3] 许有纯 袁克阔 崔孝炜 LI Wei;GAO Shan;XU Youchun;YUAN Kekuo;CUI Xiaowei(Shaanxi Key Laboratory of Safety and Durability of Concrete Structures,Xijing University,Xi’an 710123,China;School of Civil Engineering,Harbin Institute of Technology,Harbin 150090,China;Postdoctoral Station of Civil Engineering,Chongqing University,Chongqing 400045,China;Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources,Shangluo University,Shangluo 726000,China)

机构地区：[1]陕西省混凝土结构安全与耐久性重点实验室(西京学院),陕西西安710123 [2]哈尔滨工业大学土木工程学院,黑龙江哈尔滨150090 [3]重庆大学土木工程博士后流动站,重庆400045 [4]陕西省尾矿资源综合利用重点实验室(商洛学院),陕西商洛726000

出　　处：《矿业安全与环保》2023年第3期6-11,共6页Mining Safety & Environmental Protection

基　　金：陕西省自然科学基础研究计划项目(2019JQ-145)。

摘　　要：本着减少自然资源消耗的目的,在触变性水泥浆中加入钼矿冶炼后产生的固体细颗粒钼尾矿砂,通过正交试验进行触变性钼尾矿水泥浆液的配比设计,并测试其触变性、结石体抗压强度和析水率。基于试验结果,提出触变系数的计算方法。通过极差分析,可得正电胶质量分数、水灰比和固相比对浆液的触变性、析水率和相应的结石体抗压强度的影响程度。当正电胶质量分数为6%,水灰比为0.8,固相质量比为6∶4时,触变性钼尾矿水泥浆液性能最佳。In order to reduce the consumption of natural resources,the thixotropic cement slurry was added into the solid fine particle molybdenum tailing sand produced by molybdenum smelting.Through orthogonal test,the proportion design of thixotropic molybdenum tailing cement slurry was carried out.The thixotropy,compressive strength of stone body and water separation rate were tested.Based on the experimental results,the calculation method of the thixotropic coefficient was proposed.Through the range analysis,the effects of the mass fraction of positive electric glue,water-cement ratio and solid phase ratio on the thixotropy of the slurry,water separation rate and the corresponding compressive strength of the stone body were analyzed.The cement slurry performance of thixotropic molybdenum tailings is the best when the mass fraction of positive electric glue is 6%,the water-cement ratio is 0.8,and the solid phase ratio is 6∶4.

关 键 词：采空区治理 钼尾矿 触变性 浆液配比 正电胶 结石体 

分 类 号：TD803[矿业工程—矿山开采]