工程科学学报.第43卷，第2期：215-222.2021年2月 Chinese Journal of Engineering,Vol.43,No.2:215-222,February 2021 https://doi.org/10.13374/j.issn2095-9389.2020.01.09.002;http://cje.ustb.edu.cn 全尾砂高浓度胶结充填的环管试验 王洪江，王小林)，寇云鹏，2)区，吴再海，2)，彭青松) 1)北京科技大学土木与资源工程学院.北京1000832)山东黄金矿业科技有限公司充填工程实验室分公司.莱州261441 ☒通信作者，E-mail:kouyunpeng@126.com 摘要为探明全尾砂高浓度充填料浆的灰砂比、浓度和流速对管道阻力的影响规律，预测工业充填管道阻力，开展中试规 模环管试验。根据管壁切应力与剪切速率关系建立管道阻力预测模型，利用灰关联法分析各因素对管道阻力的影响强弱，通 过线性回归获取料浆流变参数.结果表明，管道阻力对料浆浓度的变化最为敏感，随浓度增加成二次函数增长.料浆流速对 管道阻力的影响仅次于浓度，层流输送时管道阻力随流速增加成线性增长.灰砂比对管道阻力的影响有双重性，灰砂质量比 小于1：8时胶凝材料的黏结作用占主导并增加管道阻力，反之胶凝材料的润滑作用占主导并降低管道阻力.环管试验得到 的料浆流变参数明显小于流变仪测试结果且更接近工程实际，管道阻力预测模型的误差小于10% 关键词全尾砂：高浓度充填：环管试验：管道阻力：流变参数 分类号TD926.4 Loop test study on the high-concentration cemented filling of full tailings WANG Hong-jiang,WANG Xiao-lin.KOU Yun-peng2,WU Zai-hai2),PENG Qing-song 1)School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China 2)Backfilling Engineering Laboratory of Shandong Gold Group Co.,Ltd.,Laizhou 261441,China Corresponding author,E-mail:kouyunpeng@126.com ABSTRACT The high-concentration slurry prepared from full tailings used for mine backfilling can effectively eliminate the disasters caused by underground voids and tailing ponds.Using pipelines to transport filling slurry is the most efficient way,and the pipe resistance is one of the most important parameters.Presently,the loop test method for studying the pipe transportation parameters of filling slurry is closest to engineering reality.To determine the influence of the cement-sand ratio,concentration,and flow velocity of the high-concentration filling slurry prepared from full tailings on the pipe resistance and predict the resistance of industrial filling pipelines, pilot-scale loop tests were performed.A pipe resistance prediction model was established based on the relationship between the shear stress and the shear rate at the pipe wall.The gray correlation method was used to analyze the influence of various factors on the pipe resistance,and the rheological parameters of filling slurry were obtained by linear regression.The results show that the pipe resistance is most sensitive to the mass concentration of filling slurry and increases quadratically.The flow velocity of filling slurry has the second- greatest effect on pipe resistance,and the resistance increases linearly with flow velocity in laminar flow.The cement-sand ratio of filling slurry has a dual effect on the pipe resistance.When the cement-sand ratio is less than 1 8,the cohesion effect of the cementing material is dominant and increases the pipe resistance.On the contrary,the lubrication effect of the cementing material is dominant and reduces the pipe resistance.The rheological parameters of filling slurry obtained by the loop test are much smaller than those obtained by the rheometer,and the loop test method is more reliable.The error of the pipe resistance prediction model is within 10%. KEY WORDS full tailings;high-concentration filling;loop test:pipe resistance;rheological parameters 收稿日期：2020-01-09 基金项目：国家“十三五”重点研发计划资助项目(2017YFC0602903)全尾砂高浓度胶结充填的环管试验 王洪江1)，王小林1)，寇云鹏1,2) 苣，吴再海1,2)，彭青松1) 1) 北京科技大学土木与资源工程学院，北京 100083    2) 山东黄金矿业科技有限公司充填工程实验室分公司，莱州 261441 苣通信作者，E-mail：kouyunpeng@126.com 摘    要    为探明全尾砂高浓度充填料浆的灰砂比、浓度和流速对管道阻力的影响规律，预测工业充填管道阻力，开展中试规 模环管试验. 根据管壁切应力与剪切速率关系建立管道阻力预测模型，利用灰关联法分析各因素对管道阻力的影响强弱，通 过线性回归获取料浆流变参数. 结果表明，管道阻力对料浆浓度的变化最为敏感，随浓度增加成二次函数增长. 料浆流速对 管道阻力的影响仅次于浓度，层流输送时管道阻力随流速增加成线性增长. 灰砂比对管道阻力的影响有双重性，灰砂质量比 小于 1∶8 时胶凝材料的黏结作用占主导并增加管道阻力，反之胶凝材料的润滑作用占主导并降低管道阻力. 环管试验得到 的料浆流变参数明显小于流变仪测试结果且更接近工程实际，管道阻力预测模型的误差小于 10%. 关键词    全尾砂；高浓度充填；环管试验；管道阻力；流变参数 分类号    TD926.4 Loop test study on the high-concentration cemented filling of full tailings WANG Hong-jiang1) ，WANG Xiao-lin1) ，KOU Yun-peng1,2) 苣 ，WU Zai-hai1,2) ，PENG Qing-song1) 1) School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China 2) Backfilling Engineering Laboratory of Shandong Gold Group Co., Ltd., Laizhou 261441, China 苣 Corresponding author, E-mail: kouyunpeng@126.com ABSTRACT    The high-concentration slurry prepared from full tailings used for mine backfilling can effectively eliminate the disasters caused  by  underground  voids  and  tailing  ponds.  Using  pipelines  to  transport  filling  slurry  is  the  most  efficient  way,  and  the  pipe resistance is one of the most important parameters. Presently, the loop test method for studying the pipe transportation parameters of filling slurry is closest to engineering reality. To determine the influence of the cement-sand ratio, concentration, and flow velocity of the high-concentration filling slurry prepared from full tailings on the pipe resistance and predict the resistance of industrial filling pipelines, pilot-scale loop tests were performed. A pipe resistance prediction model was established based on the relationship between the shear stress and the shear rate at the pipe wall. The gray correlation method was used to analyze the influence of various factors on the pipe resistance, and the rheological parameters of filling slurry were obtained by linear regression. The results show that the pipe resistance is most sensitive to the mass concentration of filling slurry and increases quadratically. The flow velocity of filling slurry has the second￾greatest  effect  on  pipe  resistance,  and  the  resistance  increases  linearly  with  flow  velocity  in  laminar  flow.  The  cement-sand  ratio  of filling slurry has a dual effect on the pipe resistance. When the cement-sand ratio is less than 1∶8, the cohesion effect of the cementing material is dominant and increases the pipe resistance. On the contrary, the lubrication effect of the cementing material is dominant and reduces the pipe resistance. The rheological parameters of filling slurry obtained by the loop test are much smaller than those obtained by the rheometer, and the loop test method is more reliable. The error of the pipe resistance prediction model is within 10%. KEY WORDS    full tailings；high-concentration filling；loop test；pipe resistance；rheological parameters 收稿日期: 2020−01−09 基金项目: 国家“十三五”重点研发计划资助项目（2017YFC0602903） 工程科学学报，第 43 卷，第 2 期：215−222，2021 年 2 月 Chinese Journal of Engineering, Vol. 43, No. 2: 215−222, February 2021 https://doi.org/10.13374/j.issn2095-9389.2020.01.09.002; http://cje.ustb.edu.cn