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岩石力学与环境岩土工程国际会议

作者： YUJING JIANG~* & SDCIONG HAN~** * Institute of Environmental Systems Kyushu University 36 Fukuoka 812-81 Japan ** Dept.of Civil and Environmental Engineering Saitama University Urawa 338 Japan

＜正＞A new base friction technique and apparatus that can reflect the similarity law between in-situ and the model have been developed for geotechnical *** behavior of model such as deformation and failure process can be automatically recorded into video floppy disks and be easily analyzed as quantitative objective data by using the designed picture analyzing *** example experiments on the mechanical behavior of underground openings and slope stability are examined to validate the newly developed base friction test method.

关键词： New base friction technique picture analyzing system quantitative evaluation model behavior underground openings slope stability

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Investigating landslide-related cracks along the edge of two loess platforms in northwest China

Investigating landslide-related cracks along the edge of two...

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中国科学院地质与地球物理研究所2012年度（第12届）学术年会

作者： L.Xu F.C.Dai L.G.Tham Y.F.Zhou C.X.Wu Division of Tibetan Plateau Research Institute of Geology and GeophysicsChinese Academy of Sciences Institute of Geology and Geophysics Chinese Academy of Sciences Department of Civil Engineering The University of Hong Kong

Cracks are widely developed along the edge of loess platforms in northwest *** surveys reveal that these cracks can be grouped into shallow and deeply penetrating *** former occur at a small distance from the platform edge,normally penetrate into the top unsaturated loess with the penetration depth being controlled by the joints in *** latter penetrate deeper into the saturated loess farther away from the platform *** cracks control the inflow and drainage of irrigation *** shallow penetrating crack can fail as a slide or fall with a volume of up to hundreds of cubic *** deeply penetrating crack can fail as a flow-like landslide with a volume of thousands of cubic meters or more.A full-scale field test simulating irrigation on the platform surface was *** two types of crack can be interconnected so that the water applied in the test finally flowed into the deep crack and was discharged from the *** of soil stress states and the results of field test show that the deeply-penetrating cracks could have both positive as well as negative effects on slope *** the one hand,water can flow more freely in the cracks, and the loess could be saturated and trigger a *** the other hand,the water can drain more easily along the crack and slope stability could be enhanced as the groundwater level is ***? 2012 |ohn Wiley & Sons,Ltd.

关键词： cracks landslide loess plateau slope stability

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Flexible design of a rock slope abutment at the Wuqiangxi Hydroelectric Power Station

Flexible design of a rock slope abutment at the Wuqiangxi Hy...

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中国科学院地质与地球物理研究所2006学术年会

作者： Hyeong-Dong Park School of Civil Urban & Geosystem EngineeringSeoul National UniversitySeoul151-744Korea

This paper presents the deployment of a real-time monitoring system for rock slope excavation of the abutment during construction of the Wuqiangxi Hydroelectric Power Station, south central *** research was carried out by means of observational methods with the use of fissures and displacements monitoring in the slope 150m long,50m high,with dip angle of 65°. The system consists of integrative instruments complex,monitored points intensely arranged in potential failure *** displacement data was used to ascertain the slope stability from the time of initial *** those in permanent slopes and landslides,the monitoring system adopted in this project played two important roles for the implementation of a flexible design to modify the primary design of excavation and construction of the temporal rock *** first is to provide the time to set up concrete plates for consolidation;the second is to save extra 11 sets of pre-stressed anchored cables when the monitoring data revealed the stable status in the focused *** of fissures in the uppermost and displacement of the slope were monitored and succeeding remedial works were adopted in *** monitoring and corresponding measures ensure the stability and normal operation of the slope based on reinforcement at appropriate time and savings of unnecessary measures at some spots during the dam abutment *** present engineering practice has provided both factual data and insights for stability and deformation of the temporal rock *** approach and methodology developed in the paper can be used to assess similar excavation disturbed zones in other large cut slopes.

关键词： slope stability Excavation Monitoring Flexible design Dam

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Evaluation of plant growth and spacing effects on bioengineered slopes subjected to rainfall

Biogeotechnics

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Biogeotechnics 2024年第2期2卷 19-27页

作者： Farshad Yazdani Hamed Sadeghi Pouya AliPanahi Mostafa Gholami Anthony Kwan Leung Department of Civil Engineering Sharif University of TechnologyAzadi Ave.TehranIran Department of Civil and Environmental Engineering The Hong Kong University of Science and TechnologyHong KongChina

Shallow landslides can be mitigated through the hydro-mechanical reinforcement provided by vegetation. Several critical parameters, such as plant spacing and plant age, play a significant role in influencing bioengineered slope stability facilitated by vegetation. However, the coupling of these effects on the stability of vegetated slope has been ignored. The objective of this study is to investigate the hydro-mechanical impact of vegetation growth and spacing on the stability of bioengineered slopes based on the predictions of a calibrated numerical model against field measurements. The impact of vegetation is investigated, with specific attention given to different plant spacing and growth stages, utilizing Schefflera arboricola. In the context of rainfall, it was observed that younger vegetation demonstrated more effective matric suction retention and recovery up to 25 kPa compared to the aged vegetation. Vegetation was revealed to substantially enhance the factor of safety up to 0.3 compared to the bare slope. Plant growth and reducing plant spacing increased the impact of root systems on both hydraulic and mechanical stability, primarily attributable to the influence of root cohesion rather than transpiration rates. The results revealed that the mechanical contribution to the factor of safety enhancement was raised from one-third to two-thirds because of the vegetation-induced cohesion within the growing rooted zone.

关键词： Bioengineered slopes Shallow landslide Plant age Plant spacing slope stability

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人工刺槐林和油松林的根系固土作用初探

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水土保持学报 1988年第4期 38-44页

作者：杨维西赵廷宁李生智张伟北京林业大学

本文提出了一种用于定量研究乔木树种林木根系固土作用的方法,并用此方法对人工刺槐和油松纯林林木根系的固土作用进行研究,分別找到了两个树种的单根固持力与根径之间的关系,得到了它们的回归方程式。利用对不同林龄林分林地各层深根... 详细信息

本文提出了一种用于定量研究乔木树种林木根系固土作用的方法,并用此方法对人工刺槐和油松纯林林木根系的固土作用进行研究,分別找到了两个树种的单根固持力与根径之间的关系,得到了它们的回归方程式。利用对不同林龄林分林地各层深根参数的调查资料,并借助单根固持力与根一径关系方程式,分别估算了两个林分几个林龄梯度对林地各层深土的固持力。结果表明,两种林分对林地土壤的固持力均随林龄的增长而增大,刺槐林固持土壤的深度亦远远超过油松林。根据研究结果,对山西省吉县红旗林场不同年龄的人工刺槐林和油松林的固土作用作出了定量描述和价评。

关键词： loess plateau reinforcement of tree roots slope stability pulling single root out method

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《西安地质学院学报》1997年（第19卷）总目次

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地球科学与环境学报 1997年第4期 106-108页

《西安地质学院学报》１９９７年（第１９卷）总目次《西安地质学院学报》1997年（第19卷）总目次... 详细信息

《西安地质学院学报》１９９７年（第１９卷）总目次《西安地质学院学报》1997年（第19卷）总目次...

关键词： slope stability Taylor theory cohernce force

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