全尾砂充填料浆电渗脱水固结试验研究
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摘要
为了探究充填料浆电渗脱水固结相关规律,采用自制的电渗脱水试验和自然脱水试验装置,进行全尾砂胶结充填料浆和非胶结充填料浆的脱水试验。通过监测试验过程中充填料浆的沉降高度、温度、脱水量、电流、阴阳极含水率、电能消耗和检测充填体试块强度,对比分析全尾砂充填料浆在不同条件下的脱水固结性状。研究结果表明:(1)未添加胶凝材料的全尾砂非胶结充填料浆,电渗脱水效果明显;(2)充填料浆电渗脱水效果主要与充填料浆自身的物理化学性质有关;(3)电渗过程中能耗系数逐渐增大,通电会造成充填体温度和电阻率升高,阳极腐蚀严重;(4)纵向布置电极时,上部溢流水的存在将导致充填料浆发生剧烈的电解现象。
To explore the law of dehydration-consolidation of full tailings filling slurry in the case of Electro-osmosis,the dehydration test of the full tailings with cemented and non-cemented filling slurries were conducted on the self-made electro-osmotic dehydration and natural dehydration test device. After monitoring series factors, like the height of filling slurry,temperature,drainage,electric current,anode and cathode moisture content,power consumption and testing blocks strength of the backfills,the characteristics of dehydrationconsolidation in full tailings filling slurry under different conditions were compared. The following conclusions are drawn:(1) The effect of electro-osmotic dehydration is obvious under the situation of full tailings non-cemented filling slurry;(2) The effect of electro-osmotic dehydration in the filling slurry is mainly related to the physicochemical properties of the filling slurry itself;(3) The energy consumption coefficient in the process of electro-osmosis is gradually increasing. The power supply can increase the temperature and resistivity of the backfills,with the anode seriously corroded;(4) When arranging the electrodes longitudinally,it can?t be energized when the overflow water has not been drained,otherwise violent electrolysis phenomenon will be observed.
To explore the law of dehydration-consolidation of full tailings filling slurry in the case of Electro-osmosis,the dehydration test of the full tailings with cemented and non-cemented filling slurries were conducted on the self-made electro-osmotic dehydration and natural dehydration test device. After monitoring series factors, like the height of filling slurry,temperature,drainage,electric current,anode and cathode moisture content,power consumption and testing blocks strength of the backfills,the characteristics of dehydrationconsolidation in full tailings filling slurry under different conditions were compared. The following conclusions are drawn:(1) The effect of electro-osmotic dehydration is obvious under the situation of full tailings non-cemented filling slurry;(2) The effect of electro-osmotic dehydration in the filling slurry is mainly related to the physicochemical properties of the filling slurry itself;(3) The energy consumption coefficient in the process of electro-osmosis is gradually increasing. The power supply can increase the temperature and resistivity of the backfills,with the anode seriously corroded;(4) When arranging the electrodes longitudinally,it can?t be energized when the overflow water has not been drained,otherwise violent electrolysis phenomenon will be observed.
引文
[1]张磊.某铜矿全尾砂充填体脱水方案研究[硕士学位论文][D].昆明:昆明理工大学,2015.(ZHANG Lei.Study on dewatering scheme of tailings filling body of a copper mine[M.S.Thesis][D].Kunming:Kunming University of Science and Technology,2015.(in Chinese))
[2]肖刚,李树鹏,姜磊,等.尹格庄金矿水砂充填采场脱水技术试验[J].金属矿山,2013,(6):29-31.(XIAO Gang,LI Shupeng,JIANG Lei,et al.Experimental research on dewatering technology of water and tailings filling stope in Yingezhuang Gold Mine[J].Metal Mine,2013,(6):29-31.(in Chinese))
[3]刘凯.全尾砂充填空区的脱水试验研究[硕士学位论文][D].昆明:昆明理工大学,2009.(LIU Kai.Experimental study on the back-filling of the unclassified tailings into Underground Area[M.S.Thesis][D].Kunming:Kunming University of Science and Technology,2009.(in Chinese))
[4]颜丙乾,杨鹏,吕文生.三山岛金矿采场充填脱水工艺改进措施[J].金属矿山,2015,(3):48-52.(YAN Bingqian,YANG Peng,LV Wensheng.Improvement measures of stope filling dewatering process in Sanshandao Gold Mine[J].Metal Mine,2015,(3):48-52.(in Chinese))
[5]张磊,吕力行.某矿井下采空区充填体脱水的研究[J].矿产保护与利用,2013,(5):9-12.(ZHANG Lei,LV Lixing.Research on filling body dewatering of a mine goaf[J].Conservation and Utilization of Mineral Resources,2013,(5):9-12.(in Chinese))
[6]韦华南.水力充填负压强制脱水研究[博士学位论文][D].长沙:中南大学,2010.(WEI Huanan.Dehydration of hydraulic filling in negative pressure[Ph.D.Thesis][D].Changsha:Central South University,2010.(in Chinese))
[7]李瑛.软黏土地基电渗固结试验和理论研究[博士学位论文][D].杭州:浙江大学,2011.(LI Ying.Experimental and theoretic study on electro-osmotic consolidation of soft clay foundation[Ph.D.Thesis][D].Hangzhou:Zhejiang University,2011.(in Chinese))
[8]王甦达,张林洪,吴华金,等.电渗法处理过湿土填料中有关参数设计的探讨[J].岩土工程学报,2010,32(2):211-215.(WANGSuda,ZHANG Linhong,WU Huajin,et al.Parameter design of over-wet soil fill treated by electro-osmosis[J].Chinese Journal of Geotechnical Engineering,2010,32(2):211-215.(in Chinese))
[9]焦丹,龚晓南,李瑛.电渗法加固软土地基试验研究[J].岩石力学与工程学报,2011,30(增1):3 208-3 216.(JIAO Dan,GONGXiaonan,LI Ying.Experimental study of consolidation of soft clay using electro-osmosis method[J].Chinese Journal of Rock Mechanics and Engineering,2011,30(Supp.1):3 208-3 216.(in Chinese))
[10]冯源,詹良通,陈云敏.城市污泥电渗脱水实验研究[J].环境科学学报,2012,32(5):1 081-1 087.(FENG Yuan,ZHAN Liangtong,CHEN Yunmin.Laboatory study on electroosmosis dewatering of sewage sludge[J].Acta Scientiae Circumstantiae,2012,32(5):1 081-1 087.(in Chinese))
[11]肖秀梅.动电技术处理城市污水脱水污泥的试验研究[硕士学位论文][D].上海:同济大学,2007.(XIAO Xiumei.Experimental research of dewatered sewage using electrokinetic technology[M.S.Thesis][D].Shanghai:Tongji University,2007.(in Chinese))
[12]孙路长,张书廷.生物污泥的电渗透脱水[J].中国给水排水,2004,(5):32-34.(SUN Luchang,ZHANG Shuting.The osmotic dehydration of biological sludge[J].China Water and Wastewater,2004,(5):32-34.(in Chinese))
[13]Ф.М.波尔特诺夫,杨培章.充填体脱水试验[J].国外金属矿采矿,1984,(11):52-55.(BELTNOFФМ,YANG Peizhang.Backfill dehydration test[J].Foreign metal Mining,1984,(11):52-55.(in Chinese))
[14]SPRUTE R H,KELSH D J.Limited field tests in electrokinetic densification of mill tailing[R].Spokane:Bureau of Mines,1975.
[15]杨建永,黄文钿.胶结充填电渗脱水试验研究[J].有色矿山,1995,(6):29-31.(YANG Jianyong,HUANG Wentin.Experimental study on electro-osmosis dehydration of cemented filling[J].Nonferrous Mines,1995,(6):29-31.(in Chinese))
[16]长沙矿山研究院动电固结组.全尾矿充填料的动电固结试验[J].有色金属:矿山部分,1980,(6):35-38.(The electric consolidation Group of Changsha Institute of Mines.Dynamic-electric consolidation test of full tailings filling materials[J].Nonferrous Metals:Mining Section,1980,(6):35-38.(in Chinese))
[17]何小芳.硅酸盐水泥水化产物的高温分解反应动力学[M].徐州:中国矿业大学出版社,2016:111-114.(HE Xiaofang.High temperature decomposition reaction kinetics of hydration products of Portland cement[M].Xuzhou:China University of mining and technology Press,2016:111-114.(in Chinese))
[2]肖刚,李树鹏,姜磊,等.尹格庄金矿水砂充填采场脱水技术试验[J].金属矿山,2013,(6):29-31.(XIAO Gang,LI Shupeng,JIANG Lei,et al.Experimental research on dewatering technology of water and tailings filling stope in Yingezhuang Gold Mine[J].Metal Mine,2013,(6):29-31.(in Chinese))
[3]刘凯.全尾砂充填空区的脱水试验研究[硕士学位论文][D].昆明:昆明理工大学,2009.(LIU Kai.Experimental study on the back-filling of the unclassified tailings into Underground Area[M.S.Thesis][D].Kunming:Kunming University of Science and Technology,2009.(in Chinese))
[4]颜丙乾,杨鹏,吕文生.三山岛金矿采场充填脱水工艺改进措施[J].金属矿山,2015,(3):48-52.(YAN Bingqian,YANG Peng,LV Wensheng.Improvement measures of stope filling dewatering process in Sanshandao Gold Mine[J].Metal Mine,2015,(3):48-52.(in Chinese))
[5]张磊,吕力行.某矿井下采空区充填体脱水的研究[J].矿产保护与利用,2013,(5):9-12.(ZHANG Lei,LV Lixing.Research on filling body dewatering of a mine goaf[J].Conservation and Utilization of Mineral Resources,2013,(5):9-12.(in Chinese))
[6]韦华南.水力充填负压强制脱水研究[博士学位论文][D].长沙:中南大学,2010.(WEI Huanan.Dehydration of hydraulic filling in negative pressure[Ph.D.Thesis][D].Changsha:Central South University,2010.(in Chinese))
[7]李瑛.软黏土地基电渗固结试验和理论研究[博士学位论文][D].杭州:浙江大学,2011.(LI Ying.Experimental and theoretic study on electro-osmotic consolidation of soft clay foundation[Ph.D.Thesis][D].Hangzhou:Zhejiang University,2011.(in Chinese))
[8]王甦达,张林洪,吴华金,等.电渗法处理过湿土填料中有关参数设计的探讨[J].岩土工程学报,2010,32(2):211-215.(WANGSuda,ZHANG Linhong,WU Huajin,et al.Parameter design of over-wet soil fill treated by electro-osmosis[J].Chinese Journal of Geotechnical Engineering,2010,32(2):211-215.(in Chinese))
[9]焦丹,龚晓南,李瑛.电渗法加固软土地基试验研究[J].岩石力学与工程学报,2011,30(增1):3 208-3 216.(JIAO Dan,GONGXiaonan,LI Ying.Experimental study of consolidation of soft clay using electro-osmosis method[J].Chinese Journal of Rock Mechanics and Engineering,2011,30(Supp.1):3 208-3 216.(in Chinese))
[10]冯源,詹良通,陈云敏.城市污泥电渗脱水实验研究[J].环境科学学报,2012,32(5):1 081-1 087.(FENG Yuan,ZHAN Liangtong,CHEN Yunmin.Laboatory study on electroosmosis dewatering of sewage sludge[J].Acta Scientiae Circumstantiae,2012,32(5):1 081-1 087.(in Chinese))
[11]肖秀梅.动电技术处理城市污水脱水污泥的试验研究[硕士学位论文][D].上海:同济大学,2007.(XIAO Xiumei.Experimental research of dewatered sewage using electrokinetic technology[M.S.Thesis][D].Shanghai:Tongji University,2007.(in Chinese))
[12]孙路长,张书廷.生物污泥的电渗透脱水[J].中国给水排水,2004,(5):32-34.(SUN Luchang,ZHANG Shuting.The osmotic dehydration of biological sludge[J].China Water and Wastewater,2004,(5):32-34.(in Chinese))
[13]Ф.М.波尔特诺夫,杨培章.充填体脱水试验[J].国外金属矿采矿,1984,(11):52-55.(BELTNOFФМ,YANG Peizhang.Backfill dehydration test[J].Foreign metal Mining,1984,(11):52-55.(in Chinese))
[14]SPRUTE R H,KELSH D J.Limited field tests in electrokinetic densification of mill tailing[R].Spokane:Bureau of Mines,1975.
[15]杨建永,黄文钿.胶结充填电渗脱水试验研究[J].有色矿山,1995,(6):29-31.(YANG Jianyong,HUANG Wentin.Experimental study on electro-osmosis dehydration of cemented filling[J].Nonferrous Mines,1995,(6):29-31.(in Chinese))
[16]长沙矿山研究院动电固结组.全尾矿充填料的动电固结试验[J].有色金属:矿山部分,1980,(6):35-38.(The electric consolidation Group of Changsha Institute of Mines.Dynamic-electric consolidation test of full tailings filling materials[J].Nonferrous Metals:Mining Section,1980,(6):35-38.(in Chinese))
[17]何小芳.硅酸盐水泥水化产物的高温分解反应动力学[M].徐州:中国矿业大学出版社,2016:111-114.(HE Xiaofang.High temperature decomposition reaction kinetics of hydration products of Portland cement[M].Xuzhou:China University of mining and technology Press,2016:111-114.(in Chinese))