降雨条件下的节理化露天矿高边坡稳定性分析

详细信息    查看全文 | 推荐本文 |

英文篇名：Stability Analysis of High Slope of Jointed Open-pit Mine under Rainfall Conditions 作者：韩廷文 ; 李军 ; 康晓鹏 英文作者：HAN Tin-wen;LI Jun;KANG Xiao-peng;Shandong Provincial No.2 Institute of Geological and Mineral Survey;College of Civil Engineering,Beijing University of Technology; 关键词：露天采场 ; 高边坡 ; 极限平衡法 ; 边坡稳定性 ; 降雨 英文关键词：open-pit mining area;;high slope;;the limit equilibrium method;;slope stability;;rainfall 中文刊名：KXJS 英文刊名：Science Technology and Engineering 机构：山东省第二地质矿产勘查院;北京工业大学建筑工程学院; 出版日期：2019-07-08 出版单位：科学技术与工程 年：2019 期：v.19;No.488 基金：国家自然科学基金(51578023)资助 语种：中文; 页：KXJS201919012 页数：6 CN：19 ISSN：11-4688/T 分类号：80-85

摘要

露天矿的开采形成了许多节理化的人工高边坡,这些边坡的岩土体结构破碎且复杂,因而在考虑边坡的整体稳定性时,地震力和地下水的作用不可忽略。为最大限度地减小开挖量及保证开采过程中的边坡整体稳定,结合青海省某大型露天镍钴矿开采后形成的节理化高陡边坡,在考虑地下水和地震力作用下,通过Geo Studio软件中的几大模块对研究区域整体边坡稳定性进行定量计算分析,并得到降雨条件下边坡稳定性及表面水平位移变化规律。之后通过对计算结果的分析得到研究区域内最佳开采坡角为44°,持续降雨状况下,坡中点的表面水平位移变化最大。最终得到开采坡角的角度对露天矿边坡整体稳定性影响巨大,且对该露天矿的开采提出了一些实用性建议。
        The mining of open-pit mines has formed many jointed artificial high slopes,and the rock and soil structures of these slopes are broken and complicated. Therefore,when considering the overall stability of the slope,the effects of seismic force and groundwater cannot be ignored. Taking a large open pit nickel-cobalt mine in Qinghai province as an example,the stability changes of the high and steep joint slope under the consideration of groundwater and earthquake are analyzed. And in order to minimize the amount of excavation and ensure the overall stability of the slope in the mining process,through quantitative calculation and analysis of the overall slope stability of the study area by several modules of GeoStudio software,slope stability and surface horizontal displacement changes under rainfall conditions are obtained. Then,the analysis of the calculation results shows that the best mining slope angle of the study area is 44°,and the change of surface horizontal displacement of the slope midpoint is the biggest under the condition of continuous rainfall. Finally,the angle of the mining slope obtained by the above analysis has a great impact on the overall stability of the open pit slope,and some practical suggestions for the mining of the open pit have been put forward.

引文

1齐云龙,周勇,黄栋,等.地震和降雨作用下的边坡稳定性分析[J].科学技术与工程,2010,10(26):6569-6572Qi Yunlong,Zhou Yong,Huang Dong,et al. Stability analysis on rainfall and seismic of slope[J]. Science Technology and Engineering,2010,10(26):6569-6572
    2 周宏博,孙树林,尚文涛,等.降雨雨型和强度对土边坡稳定性影响分析[J].科学技术与工程,2012,12(11):2602-2606Zhou Hongbo,Sun Shulin,Shang Wentao,et al. Analysis of the soil slope stability influenced by rainfall pattern and intensity[J]. Science Technology and Engineering,2012,12(11):2602-2606
    3 姚军,吴礼舟.降雨诱发双层土坡地下水上升及稳定性分析[J].科学技术与工程,2014,14(33):158-162Yao Jun,Wu Lizhou. Groundwater rise of two-layer soil slopes caused by rainfall and its stability analysis[J]. Science Technology and Engineering,2014,14(33):158-162
    4 何玉琼,李春明,杨兴华,等.降雨条件下公路边坡稳定性分析[J].重庆交通大学学报(自然科学版),2018,37(10):37-42He Yuqiong,Li Chunming,Yang Xinghua,et al. Stability analysis of road slope under rainfall condition[J]. Journal of Chongqing Jiaotong University(Natural Science),2018,37(10):37-42
    5 杨天鸿,张锋春,于庆磊,等.露天矿高陡边坡稳定性研究现状及发展趋势[J].岩土力学,2011,32(5):1437-1451Yang Tianhong,Zhang Fengchun,Yu Qinglei,et al. Research situation of open-pit mining high and steep slope stability and its developing trend[J]. Rock and Soil mechanics,2011,32(5):1437-1451
    6 中华人民共和国住房和城乡建设部.工程岩体分级标准:GB/T50218—2014[S].北京:中国建筑工业出版社,2014Ministry of Housing and Urban-Rural Development of the People's Republic of China. Standard for engineering classification of rock mass:GB/T 50218—2014[S]. Beijing:China Architecture&Building Press,2014
    7 姚爱军,薛廷河.节理化岩体边坡的地下水动力学稳定性分析[J].公路交通科技,2005,22(3):17-20Yao Aijun,Xue Tinghe. Analysis on groundwater dynamics stabilization of jointed rock masses slope[J]. Journal of Highway and Transportation Research and Development,2005,22(3):17-20
    8 王三建.岩体剪切强度特征及强度折减方法研究[J].山西建筑,2018,17(34):117-118Wang Sanjian. Characteristics of shear strength of rock mass and study on strength reduction method[J] Shanxi Architecture,2018,17(34):117-118
    9 中华人民共和国住房和城乡建设部.建筑抗震设计规范:GB50011—2010[S].北京:中国建筑工业出版社,2010Ministry of Housing and Urban-Rural Development of the People's Republic of China. Code for seismic design of buildings:GB 50011—2010[S]. Beijing:China Architecture&Building Press,2010
    10 中华人民共和国住房和城乡建设部.非煤露天矿边坡工程技术规范:GB 51016—2014[S].北京:中国建筑工业出版社,2014Ministry of Housing and Urban-Rural Development of the People's Republic of China. Technical code for non-coal open-pit mine slop engineering:GB 51016—2014[S]. Beijing:China Architecture&Building Press,2014
    11 Fredlund D G,Rahardjo H.非饱和土力学[M].陈仲颐,张在明,陈愈炯,等,译.北京:中国建筑工业出版社,1997:126-146Fredlund D G,Rahardjo H. Soil Mechanics for unsaturated soils[M]. Chen Zhongyi,Zhang Zaiming,Chen Yujiong,et al,transtated. Beijing:China Architecture&Building Press,1997:126-146
    12 康晓鹏,韩廷文,高岩,等.基于强度折减法的大型露天矿东端帮稳定性分析[J].中国矿业,2019,28(3):93-99Kang Xiaopeng,Han Tingwen,Gao Yan,et al. Stability analysis of the eastern end of large open-pit mine based on strength reduction method[J]. China Mining Magazine,2019,28(3):93-99
    13 刘福明,才庆祥,周伟,等.露天矿排土场边坡降水入渗规律试验研究[J].煤炭学报,2015,40(7):1534-1540Liu Fuming,Cai Qingxiang,Zhou Wei,et al. Experimental study on the rainfall infiltration rule in the dump slope of surface mines[J]. Journal of China Coal Society,2015,40(7):1534-1540