电渗法联合固化剂改良尾矿浆液试验研究  

Experimental Study on Electro-osmosis Combined with Stabilizers for Tailings Slurry Improvement

作　　者：刘娉慧 赵琦琦 侯传营 LIU Pinghui;ZHAO Qiqi;HOU Chuanying(Department of Earth Science and Engineering,North China University of Water Resources and Electric Power,Zhengzhou 450046,China;Jinjiang City Vision Garden Construction Co.,Ltd.,Jinjiang 362200,China)

机构地区：[1]华北水利水电大学地球科学与工程学院,河南郑州450046 [2]晋江市愿景佳园建设有限公司,福建晋江362200

出　　处：《华北水利水电大学学报(自然科学版)》2025年第2期129-136,共8页Journal of North China University of Water Resources and Electric Power:Natural Science Edition

基　　金：河南省自然科学基金项目(232300421208)。

摘　　要：为了探究尾矿浆液改良处理方法,开展了掺加不同固化剂、单一电渗、电渗联合固化剂改良尾矿浆液的室内试验。基于排水量、含水率、液塑限、压缩指数、抗剪强度、渗透系数和电流等参数变化,对比分析各改良方法对尾矿浆液快速脱水和固化效果的影响。试验结果表明:与未处理前相比,固化剂促进了尾矿浆液强度的提高及塑性和渗透性的降低;电渗可使尾矿浆液脱水速率和脱水量得以提升;电渗联合固化剂可以进一步促进尾矿强度的提高和塑性的降低,抗剪强度与对照组(未处理试验组)相比提高约21.5倍,约是单独掺加固化剂处理后强度的2倍,脱水率相比于对照组由36.3%提高到70.0%,进而证实了电渗与固化剂联合法的有效性,其中电渗联合水泥在改良尾矿浆液中综合效果最佳。This study systematically investigates the synergistic effects of electro-osmosis and chemical stabilizers on tailings slurry treatment through laboratory experiments.Three approaches were compared:①stabilizer addition alone,②standalone electro-osmosis,and③combined electro-osmosis-stabilizer treatment.Key parameters including drainage volume,water content,atterberg limits,compression index,shear strength,permeability coefficient,and electric current were monitored to evaluate dewatering efficiency and solidification performance.The results demonstrate that:①Chemical stabilizers effectively enhanced slurry strength while reducing plasticity and permeability;②Electro-osmosis accelerated dewatering,achieving higher drainage rate compared to gravity settlement;③The combined treatment yielded superior performance:Shear strength reached 21.5 times to the control value(2 times higher than stabilizer-only treatment);Dewatering efficiency improved from 36.3%to 70.0%;Optimal results were obtained with cement-based stabilizers.

关 键 词：尾矿浆液 电渗 固化剂 脱水 抗剪强度 

分 类 号：TU449[建筑科学—岩土工程] S156.99[建筑科学—土工工程]