基于分级分析法评价结构面对岩质高边坡稳定性的影响
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摘要
以云南省普洱市大平掌铜矿东部边坡为工程实例,研究结构面对岩质高边坡稳定性的影响.通过大型露天矿山边坡岩体工程稳定性分级分析方法,按照岩体结构面与矿山边坡规模的匹配性,依次对矿山边坡的总体边坡、组合台阶边坡、台阶边坡进行分层次的岩体稳定性分析并找出控制边坡稳定的关键性结构面及其组合.经过现场与实验分析对比,得到结构面对台阶边坡和整体东部边坡的影响很大,对组合台阶坡影响甚小.同时台阶边坡相对于整体东部边坡而言规模较小,故台阶边坡的结构面对整体东部边坡影响较小.最后,运用Midas-GTS建立考虑结构面及不考虑结构面的东部边坡三维有限元模型,进行稳定性计算分析及对比.
Taking the slope of Eastern Dapingzhang Copper Mine in Pu'er City in Yunnan Province as an example, this paper is aimed to study the influence of the structure on the stability of high rock slopes.Through the graded analysis of rock mass engineering stability of large open pit mines, according to the matching of rock mass structure surface and mine slope scale, rock stability analysis was conducted to the overall slope, combined step slope and step edge of the eastern slope of Dapingzhang copper mine successively. We successfully found the key structural planes and combinations that control the slope stability.The comparison with the experimental and on-site analysis shows that the structure had a great influence on the step slope and the overall eastern slope, but had little influence on the combined step slope. At the same time, the step slope was relatively small compared to the overall eastern slope, so its structure had less influence on the overall eastern slope. Finally, Midas-GTS was used to establish a three-dimensional finite element model of the eastern slope with the structural plane considered and not, theirk0 stability calculation analysis and comparison were carried out.
Taking the slope of Eastern Dapingzhang Copper Mine in Pu'er City in Yunnan Province as an example, this paper is aimed to study the influence of the structure on the stability of high rock slopes.Through the graded analysis of rock mass engineering stability of large open pit mines, according to the matching of rock mass structure surface and mine slope scale, rock stability analysis was conducted to the overall slope, combined step slope and step edge of the eastern slope of Dapingzhang copper mine successively. We successfully found the key structural planes and combinations that control the slope stability.The comparison with the experimental and on-site analysis shows that the structure had a great influence on the step slope and the overall eastern slope, but had little influence on the combined step slope. At the same time, the step slope was relatively small compared to the overall eastern slope, so its structure had less influence on the overall eastern slope. Finally, Midas-GTS was used to establish a three-dimensional finite element model of the eastern slope with the structural plane considered and not, theirk0 stability calculation analysis and comparison were carried out.
引文
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[17]杜时贵,程俊杰,王思敬.岩体的基本构成---结构面和结构体[J].工程地质学报,2000,8(增刊1):305-308.
[18]杜时贵,郭霄,吕建伟.岩体结构面抗剪强度估算方法研究进展[J].金华职业技术学院学报,2004(3):1-5.
[19]周增意.有关岩体结构面强度的讨论[J].中国水运(理论版),2007(7):116-117.
[20]王猛.金沙江乌东德水电站河门口坝址溢洪道边坡稳定性研究[D].成都:成都理工大学,2006.
[21]罗强,赵炼恒,李亮,等.基于Barton-Bandis准则的锚固边坡稳定性分析[J].岩土力学,2013,34(5):1351-1359.
[22]余明.边坡稳定性分析方法在昭永公路上的应用[D].重庆:重庆交通大学,2015.
[23]宋享桦,刘俊岩,刘燕.基于临界稳定的某石灰岩质基坑软弱结构面参数反分析[A]//中国土木工程学会.中国土木工程学会2016年学术年会论文集[C].北京:中国土木工程学会,2016:13.
[24]李曙锋;贺跃光.露天矿山边坡变形监测及工程实例[J].有色金属科学与工程,2002,3(2):1-4.
[25]余清仔.德兴铜矿露采矿区岩体结构特征对边坡稳定性的影响[J].江西有色金属,1992,5(2):102-106.
[2]YAN G J.Approach to the study&prevention-cure of mines geologic disasters[J].China Mining Magazine,2004,13(3):66-68.
[3]L I S L.Study on the geological hazard in metal mines and its prevention countermeasures[J].The Chinese Journal of Geological Hazard and Control,2002,13(4):44-48.
[4]GB 51016-2014,非煤露天矿边坡工程技术规范[S].北京:中国计划出版社,2014.
[5]GU F H.Failure types and damage scale analysis of bench slope based on geometrical characteristics[J].Metal Mine,2014,43(7):51-55.
[6]黄洪波.层状岩质边坡的稳定性分析[D].杭州:浙江大学,2003.
[7]欧敏.滑坡演化过程CA预测理论研究及应用[D].重庆:重庆大学,2006.
[8]段建.岩质边坡稳定性分析及其危险滑移路径搜索研究[D].长沙:中南林学院,2005.
[9]江春明,刘文连,阿发友,等.大平掌露天矿岩质边坡稳定性有限元分析[J].价值工程,2016,35(17):194-197.
[10]刘志清.基于蚁群算法的岩质边坡稳定性分析[D].北京:中国地质大学(北京),2008.
[11]杨金林.不同形状边坡稳定性研究及其工程应用[D].长沙:中南大学,2011.
[12]张昀青,刘维宁,赵逊.岗南水库大坝安全稳定分析[J].中国安全科学学报,2003(4):58-62.
[13]张彬.岩质边坡半隧洞超前支护结构数值研究[D].西安:西安理工大学,2010.
[14]叶季平.金湖泵站高边坡稳定性研究[D].武汉:武汉大学,2004.
[15]任志丹.含软弱夹层边坡的稳定性分析[D].昆明:昆明理工大学,2015.
[16]宫宇生.岩质边坡稳定性影响因素分析及其加固措施研究[J].科技与企业,2015(14):143-148.
[17]杜时贵,程俊杰,王思敬.岩体的基本构成---结构面和结构体[J].工程地质学报,2000,8(增刊1):305-308.
[18]杜时贵,郭霄,吕建伟.岩体结构面抗剪强度估算方法研究进展[J].金华职业技术学院学报,2004(3):1-5.
[19]周增意.有关岩体结构面强度的讨论[J].中国水运(理论版),2007(7):116-117.
[20]王猛.金沙江乌东德水电站河门口坝址溢洪道边坡稳定性研究[D].成都:成都理工大学,2006.
[21]罗强,赵炼恒,李亮,等.基于Barton-Bandis准则的锚固边坡稳定性分析[J].岩土力学,2013,34(5):1351-1359.
[22]余明.边坡稳定性分析方法在昭永公路上的应用[D].重庆:重庆交通大学,2015.
[23]宋享桦,刘俊岩,刘燕.基于临界稳定的某石灰岩质基坑软弱结构面参数反分析[A]//中国土木工程学会.中国土木工程学会2016年学术年会论文集[C].北京:中国土木工程学会,2016:13.
[24]李曙锋;贺跃光.露天矿山边坡变形监测及工程实例[J].有色金属科学与工程,2002,3(2):1-4.
[25]余清仔.德兴铜矿露采矿区岩体结构特征对边坡稳定性的影响[J].江西有色金属,1992,5(2):102-106.