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露天矿滑坡控制技术的应用与研究 被引量:4
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作者 寇明遥 王永智 《甘肃冶金》 2010年第1期24-27,共4页
通过对露天矿开采边坡的破坏形式和采用的控制技术分析,对于目前采用极限平衡理论为基础计算可能破坏面或滑移面上的破坏与抗破坏的阻力和以应力应变理论为基础的,利用有限单元法或离散单元法等计算岩体中各部位的应力与应变值的两种方... 通过对露天矿开采边坡的破坏形式和采用的控制技术分析,对于目前采用极限平衡理论为基础计算可能破坏面或滑移面上的破坏与抗破坏的阻力和以应力应变理论为基础的,利用有限单元法或离散单元法等计算岩体中各部位的应力与应变值的两种方法进行研究,认为三维离散单元法对解决露天矿山的边坡的破坏具有指导意义。 展开更多
关键词 露天矿 滑坡控制技术 应用研究
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梅河高速公路某滑坡复活控制因素分析及防治
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作者 廖仁喜 张强 龙里宁 《西部探矿工程》 CAS 2006年第8期285-286,共2页
分析梅河高速公路某滑坡的复活控制因素,提出可行的防治措施。
关键词 梅河高速公路 滑坡复活控制因素 防治措施
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水库滑坡涌浪传播有限元数值模拟 被引量:10
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作者 周桂云 李同春 钱七虎 《岩土力学》 EI CAS CSCD 北大核心 2013年第4期1197-1201,1210,共6页
库岸滑坡涌浪危害巨大,正确预测库区可能的滑坡涌浪非常重要,是工程可行性论证的重要内容之一。将浅水控制方程应用于滑坡涌浪数值模拟,控制方程采用简便且具有较高精度的两步Taylor-Galerkin方法进行求解。通过算例对数值模型的应用进... 库岸滑坡涌浪危害巨大,正确预测库区可能的滑坡涌浪非常重要,是工程可行性论证的重要内容之一。将浅水控制方程应用于滑坡涌浪数值模拟,控制方程采用简便且具有较高精度的两步Taylor-Galerkin方法进行求解。通过算例对数值模型的应用进行验证,结果表明,涌浪产生后将以入水点为源点迅速向四周推进并不断衰减,且随传播距离的增加浪高降幅逐渐减小。计算的涌浪高度及水位变化规律与实测资料吻合得很好,并将滑坡涌浪的沿程传播过程可视化。研究结果表明,文中方法模拟滑坡涌浪传播是有效可行的,可用于滑坡涌浪灾害的预测和防治。 展开更多
关键词 滑坡涌浪{数值模拟{浅水控制方程 两步Taylor-Galerkin方法 有限元
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岩质隧洞边坡失稳机理研究 被引量:1
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作者 李林丹 汪斌 +1 位作者 代永新 刁虎 《金属矿山》 CAS 北大核心 2018年第6期142-146,共5页
为了研究国内某铁矿隧洞边坡失稳机理,利用3dmine建立地质模型,将其导入到FLAC3D中进行三维数值模拟。在建立能反映地质地形条件的三维数值模型的基础上,采用摩尔—库伦模型,考虑剪切屈服和拉应力屈服,模拟出隧洞边坡的破坏,得到其塑性... 为了研究国内某铁矿隧洞边坡失稳机理,利用3dmine建立地质模型,将其导入到FLAC3D中进行三维数值模拟。在建立能反映地质地形条件的三维数值模型的基础上,采用摩尔—库伦模型,考虑剪切屈服和拉应力屈服,模拟出隧洞边坡的破坏,得到其塑性区分布图和位移分布图。根据塑性区分布特点和位移等值线图推测出隧洞边坡的破坏模式,进一步结合隧洞内各监测点监测的位移数据得出该岩质隧洞边坡的失稳机理。解释了隧洞发生破坏是因为边坡产生滑动,推动了坡体内的隧洞产生位移。不仅为下一步的加固治理提供了理论依据,同时也提供了从滑坡控制上实现隧洞加固的治理思路。 展开更多
关键词 隧洞边坡 失稳机理 地质模型 三维数值模型 滑坡控制
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Regional landslide hazard assessment based on Distance Evaluation Model 被引量:2
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作者 Jiacun LI Yan QIN Jing LI 《Global Geology》 2008年第4期203-208,共6页
There are many factors influencing landslide occurrence.The key for landslide control is to confirm the regional landslide hazard factors.The Cameron Highlands of Malaysia was selected as the study area.By bivariate s... There are many factors influencing landslide occurrence.The key for landslide control is to confirm the regional landslide hazard factors.The Cameron Highlands of Malaysia was selected as the study area.By bivariate statistical analysis method with GIS software the authors analyzed the relationships among landslides and environmental factors such as lithology,geomorphy,elevation,road and land use.Distance Evaluation Model was developed with Landslide Density(LD).And the assessment of landslide hazard of Cameron Highlands was performed.The result shows that the model has higher prediction precision. 展开更多
关键词 distance evaluation model regional landslide hazard assessment Cameron Highlands
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Mechanism of the December 2015 Catastrophic Landslide at the Shenzhen Landfill and Controlling Geotechnical Risks of Urbanization 被引量:72
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作者 Yueping Yin Bin Li +7 位作者 Wenpei Wang Liangtong Zhan Qiang Xue Yang Gao Nan Zhang Hongqi Chen Tiankui Liu Aiguo Li 《Engineering》 SCIE EI 2016年第2期230-249,共20页
This paper presents findings from an investigation of the large-scale construction solid waste (CSW) landslide that occurred at a landfill at Shenzhen, Guangdong, China, on December 20, 2015, and which killed 77 peo... This paper presents findings from an investigation of the large-scale construction solid waste (CSW) landslide that occurred at a landfill at Shenzhen, Guangdong, China, on December 20, 2015, and which killed 77 people and destroyed 33 houses. The landslide involved 2.73 - 106 m3 of CSW and affected an area about 1100 m in length and 630 m in maximum width, making it the largest landfill landslide in the world. The investigation of this disaster used a combination of unmanned aerial vehicle surveillance and multistage remote-sensing images to reveal the increasing volume of waste in the landfill and the shifting shape of the landfill slope for nearly two years before the landslide took place, beginning with the creation of the CSW landfill in March, 2014, that resulted in the uncertain conditions of the landfill's boundaries and the unstable state of the hydrologic performance. As a result, applying conventional stability analysis methods used for natural landslides to this case would be difficult. In order to analyze this disaster, we took a multistage modeling technique to analyze the varied characteristics of the land- fill slope's structure at various stages of CSW dumping and used the non-steady flow theory to explain the groundwater seepage problem. The investigation showed that the landfill could be divided into two units based on the moisture in the land: (1) a front uint, consisted of the landfill slope, which had low water content; and (2) a rear unit, consisted of fresh waste, which had a high water content. This struc- ture caused two effects-surface-water infiltration and consolidation seepage that triggered the landslide in the landfill. Surface-water infiltration induced a gradual increase in pore water pressure head, or piezometric head, in the front slope because the infiltrating position rose as the volume of waste placement increased. Consolidation seepage led to higher excess pore water pressures as the loading of waste increased. We also investigated the post-failure soil dynamics parameters of the landslide deposit using cone penetration, triaxial, and ring-shear tests in order to simulate the characteristics of a flowing slide with a long run-out due to the liquefaction effect. Finally, we conclude the paper with lessons from the tens of catastrophic landslides of municipal solid waste around the world and discuss how to better manage the geotechnical risks of urbanization. 展开更多
关键词 Construction solid waste (CSW)Landfill landslideFactor of safety (FOS)Geotechnical risk
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