粗、细尾砂筑坝渗流特性模型试验及现场实测研究

摘要
图/表
参考文献(19)
相关文章 (15)

全文: PDF (1317 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要以云南2个矿山生产的粗尾砂和细尾砂为堆坝材料，通过室内小比例渗流堆坝模型试验和现场实测，对粗、细尾砂在堆坝过程中渗流规律进行对比研究。研究结果表明：(1) 细粒尾砂堆积坝的浸润线较粗粒尾砂堆积坝高的原因有两方面：① 细粒尾矿自身渗透性差；② 在堆坝过程中，细粒尾砂在用于防漏作用的土工布上形成了一层较密实的防水层，堵塞了土工布排水小孔，阻碍了尾矿坝排渗效果；(2) 粗、细粒尾矿堆积坝的坝前沉积规律基本相同，即同一水平面上为前缘细后部粗，上部粗下部细，但粗粒尾矿堆积坝形成的干滩面坡度较大，为1.0%～2.5%，而细粒尾矿堆积形成的干滩面坡度比较平缓，为0.3%～0.9%；(3) 根据尾矿坝的整体排渗效果，提出“尾矿坝相对渗透率”的概念，在外部条件基本相同的情况下，细粒尾砂堆积坝的相对渗透系数约为粗尾砂堆积坝的25%；(4) 由于细粒尾矿渗透性较差，浸润线偏高，造成尾矿坝坝坡水头压力较大，极易引起坝坡渗透破坏。研究成果对类似尾矿堆坝的研究具有重要的指导意义。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	尹光志1
	2
	敬小非1
	魏作安1
	2
	李小双1

关键词 ：边坡工程, 尾矿坝, 相对渗透率, 渗流规律, 模型试验, 现场监测

Abstract：Taking the materials of the coarse and fine tailings from two tailings pond in Yunnan Province for example，the dam model experiment and field measurement were performed to study the seepage laws of coarse and fine grained tailings dam. The research results show that：(1) The reasons for that the seepage line of fine tailings dam is lower than that of coarse tailings dam are two aspects：① the permeability of fine tailings is lower than that of coarse tailings；② the fine tailings are deposited on the geotechnical fabric and formed a non-watertight layer，and it plugs the geotechnical fabrics drainage pore and make the effect of water drainage be lower obviously. (2) The sedimentary laws of coarse and fine tailings on the tailings beach were the same，i.e. the fine tailings are at front and the coarse tailings are at back in a same horizontal plane，on the top，there are coarse tailings and at the bottom were fine tailings. But the gradient of coarse tailings beach is steep which is about 1.0%–2.5%，and that of the fine grained tailings beach is only about 0.3%–0.9%. (3) From the whole water penetrability of tailings dam，the relative permeability is put forward. The relative permeability of fine tailings dam is only 25% of coarse tailings dam in same external conditions. (4) Because the water penetrability of fine tailings is lower and the height of seepage line is higher，the head pressure of fine tailings dam is large to make the dam failure. The research results are of significance for similar tailings dam engineering.

Key words： slope engineering tailings dam relative permeability seepage laws model test field measurement

引用本文:

尹光志1，2，敬小非1，魏作安1，2，李小双1. 粗、细尾砂筑坝渗流特性模型试验及现场实测研究[J]. 岩石力学与工程学报, 2010, 29(S2): 3710-3718.
YIN Guangzhi1，2，JING Xiaofei1，WEI Zuoan1，2，LI Xiaoshuang1. STUDY OF MODEL TEST OF SEEPAGE CHARACTERISTICS AND FIELD MEASUREMENT OF COARSE AND FINE TAILINGS DAM. , 2010, 29(S2): 3710-3718.

链接本文:

https://rockmech.whrsm.ac.cn/CN/Y2010/V29/IS2/3710

[1] 魏作安，尹光志，沈楼燕，等. 探讨尾矿库设计领域中存在的问题[J]. 有色金属(矿山部分)，2002，54(4)：44–45，48.(WEI Zuoan，YIN Guangzhi，SHEN Louyan，et al. Discussion on problems in design of tailing dam[J]. Nonferrous Metals(Mine Section)，2002，54(4)：44–45，48.(in Chinese))

[2] KWAK M，JAME D F，KLEIN KA. Flow behavior of tailings paste for surface disposal[J]. International Journal of Mineral Processing，2005，77(3)：139–153.

[3] MIAN M H，YANFUL E K. Tailings erosion and resuspension in two mine tailings ponds due to wind waves[J]. Advances in Environmental Research，2003，7(4)：745–765.

[4] MILTON A，COOKE J A，JOHNSON M S. A comparison of cadmium in ecosystems on metalliferous mine tailings in Wales and Ireland[J]. Water，Air，and Soil Pollution，2004，153(1)：157–172.

[5] 蒋卫东，李夕兵，贺怀建. 基于灰色算子的尾矿坝浸润线混沌研究[J]. 岩土力学，2004，25(2)：242–245.(JIANG Weidong，LI Xibing，HE Huaijian. Study of chaos of saturation line of tailings dam based on grey operator[J]. Rock and Soil Mechanics，2004，25(2)：242–245.(in Chinese))

[6] 魏作安. 细粒尾矿库及其堆坝稳定性研究[博士学位论文][D]. 重庆：重庆大学，2004.(WEI Zuoan. Research on the characteristics and dam stability of fine grained tailings[Ph. D. Thesis][D]. Chongqing：Chongqing University，2004.(in Chinese))

[7] 张超，杨春和. 尾矿坝液化判别简化方法研究[J]. 岩石力学与工程学报，2006，25(增2)：3 730–3 735.(ZHANG Chao，YANG Chunhe. Study of a simplified procedure for evaluating liquefaction potential of tailings dam[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(Supp.2)：3 730–3 735.(in Chinese))

[8] 陈殿强，王来贵，李根. 尾矿坝稳定性分析[J]. 辽宁工程技术大学学报(自然科学版)，2008，6(3)：359–361.(CHEN Dianqiang，WANG Laigui，LI Gen. Analysis of tailing dam¢s stability[J]. Journal of Liaoning Technical University(Natural Science)，2008，6(3)：359–361.(in Chinese))

[9] 段仲沅，袁兵. 某尾矿坝暴雨蓄洪溃塌原因分析与综合治理措施[J]. 力学与实践，2008，4(2)：40–44.(DUAN Zhongyuan，YUAN Bing. Collapse analysis and comprehensive treatment of a mine tailings dam due to rain storm and flood impounding[J]. Mechanics and Practice，2008，4(2)：40–44.(in Chinese))

[10] 王飞跃，杨铠腾，徐志胜. 基于浸润线矩阵的尾矿坝稳定性分析[J]. 岩土力学，2009，30(3)：840–844.(WANG Feiyue，YANG Kaiteng，XU Zhisheng. Stability analysis of tailings dam based on saturation line matrix[J]. Rock and Soil Mechanics，2009，30(3)：840–844.(in Chinese))

[11] 敬小非，尹光志，魏作安，等. 模型试验与数值模拟对尾矿坝稳定性综合预测[J]. 重庆大学学报，2009，32(3)：308–313.(JING Xiaofei，YIN Guangzhi，WEI Zuoan，et al. Model test and numerical simulation of tailing dam safety forecasting[J]. Journal of Chongqing University，2009，32(3)：308–313.(in Chinese))

[12] TABRI K，MATUSIAK J，VARSTA P. Sloshing interaction in ship collisions—an experimental and numerical study[J]. Ocean Engineering，2009，36(1)：1 366–1 376.

[13] 尹光志，张东明，魏作安，等. 土工合成材料与细粒尾矿界面作用特性的试验研究[J]. 岩石力学与工程学报，2004，23(3)：426–429.(YIN Guangzhi，Zhang Dongming，WEI Zuoan，et al. Testing study fine grained tailings and geo-synthetics[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(3)：426–429.(in Chinese))

[14] 杨俊杰. 相似理论与结构模型实验[M]. 武汉：武汉理工大学出版社，2005.(YANG Junjie. Similarity theory and structure models experiment[M]. Wuhan：Wuhan University of Technology Press，2005.(in Chinese))

[15] 凌贤长，郭明珠，王东升，等. 液化场地桩基桥梁震害响应大型振动台模型试验研究[J]. 岩土力学，2006，27(1)：7–10，22.(LING Xianzhang，GUO Mingzhu，WANG Dongsheng，et al. Large-scale shaking table model test of seismic response of bridge of pile foundation in ground of liquefaction[J]. Rock and Soil Mechanics，2006，27(1)：7–10，22.(in Chinese))

[16] 姚德基. 泥石流[M]. 北京：科学出版社，1986.(YAO Deji. Debris flow[M]. Beijing：Science Press，1986.(in Chinese))

[17] 《中国有色金属尾矿库概论》编委会. 中国有色金属尾矿库概论[R]. 北京：中国有色金属工业总公司，1992.(The Editorial Committee of《China Nonferrous Metals Tailings Pond Conspectus》. China Nonferrous Metals tailings pond conspectus[R]. Beijing：China Nonferrous Metals Industry Head Corporation，1992.(in Chinese))

[18] 尾矿设施设计参考资料编写组. 尾矿设施设计参考资料[M]. 北京：冶金工业出版社，1980.(The Drafting Group of Tailings Facilities Design Reference. Tailings Facilities design reference[M]. Beijing：Metallurgical Industry Press，1980.(in Chinese))

[19] 周必凡，李德基，罗德富，等. 泥石流防治指南[M]. 北京：科学出版社，1991.(ZHOU Bifan，LI Deji， LUO Defu，et al. Prevention guideline for debris flow[M]. Beijing：Science Press，1991.(in Chinese))