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《The Chinese Journal of Geological Hazard and Control》 2017-01
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Instability of a high loess slope in Lanzhou city of Jiangsu province and suggestion for its reinforcement

LAI Guoquan;REN Qingzhao;ZHANG Junde;Northwest Research Institute Co.,Ltd.of C.R.E.C.;  
Through surveying the deformation and the engineering geological conditions of the loess high slope in Lanzhou.To take the finite element software Plaxis,By adopting the method of numerical simulation analysis of the current state of the excavation slope body stress and strain state,and take the implementation of displacement monitoring.On the basis of above analysis the causes of the slope instability.Against the difficulty of governance and characteristics of slope,this paper puts forward a reasonable management plan.(1) the displacement monitoring results shows the deformation is given priority to with horizontal displacement,subsidence is smaller 22 monitoring points,14 cumulative horizontal displacement monitoring points more than 20 mm,daily average of 17 monitoring displacement rate is greater than 0.2 mm/d.Cumulative horizontal displacement to more than standard value,and timely implementation of top emergency relocation and slope foot to stop construction of the measures,slope after building demolition,displacement rate showed a trend of decrease.(2) The finite element analysis shows the original supporting pile foundation embedment depth is shallow,not into the pebble bed,pile anchorage segment are too short,and no through the critical slip surface bolt,cannot provide the anchoring force,the dumping of supporting pile type deformation,this is given priority to with horizontal deformation and displacement monitoring are identical.(3) Based on the concept of strong waist Gu Jiao,this paper puts forward that the upper slope lightening,central anchor,the lower of anti-slide pile retaining reasonable management plan.(4) For the overrun slope stability monitoring,it is suggested that after two years of monitoring expires,to extend themonitoring,reduce frequency,monitor and monitoring the new idea.
【CateGory Index】: TU444
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【Citations】
Chinese Journal Full-text Database 3 Hits
1 LIU Chuanzheng;Consultative Centre for Geo-Hazard Emergency,MLR;China Institute for Geo-Environment Monitoring;;Genetic mechanism of landslide tragedy happened in Hong'ao dumping place in Shenzhen,China[J];中国地质灾害与防治学报;2016-01
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【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 LIU Chuanzheng;Consultative Centre of Geo-Hazard Emergency,Ministry of Land and Resources;China Institute of Geo-Environment Monitoring;;Research on High Speed and Long-Distance of the Avalanches or Landslide——Debris Streams[J];地质论评;2017-06
2 Zhang Peng-li;Li Yu;School of Earth and Environmental Sciences, Lanzhou University;;Influence of topographical factors on debris flow in valley cities in northwest China[J];兰州大学学报(自然科学版);2017-05
3 ZHANG Yixi;XU Qiang;PENG Dalei;ZHAO Kuanyao;GUO Chen;State Key Laboratory of Geohazard Prevention and Geo-environment Protection,Chengdu University of Technology;;An experimental study of the permeability of the catastrophic landslide at the Shenzhen Landfill[J];水文地质工程地质;2017-05
4 SHANG Jin-yu;ZHANG Yong-jun;LI Song;Gansu Institute of Geological Environment Monitoring;;DEVELOPMENT AND TYPES OF THE GEO-HAZARDS IN LANZHOU CITY[J];甘肃地质;2017-03
5 LIU Chuanzheng;Consultative Centre for Geo-Hazard Emergency,MLR;China Institute for Geo-Environment Monitoring;;Research on the risk recognition of geological disasters[J];水文地质工程地质;2017-04
6 LAI Guoquan;REN Qingzhao;ZHANG Junde;Northwest Research Institute Co.,Ltd.of C.R.E.C.;;Instability of a high loess slope in Lanzhou city of Jiangsu province and suggestion for its reinforcement[J];中国地质灾害与防治学报;2017-01
7 DUAN Xu;ZHU Junhua;DONG Qi;CHEN Zhixin;Chang'an University;Shaanxi Science & Technology Holding Group Co.,Ltd.;;Discussion of the Correlation between Human Engineering Activities and Geological Disasters in Yan'an Area[J];灾害学;2017-01
8 HU Jianhua;HUANG Chaoran;XI Zhiqin;YANG Chun;School of Resources and Safety Engineering,Central South University;;Analysis and Responses of the “12·20” Landslide Accident in Shenzhen Based on System Thinking[J];灾害学;2017-01
9 Peng Lu;Hunan Monitoring Center of Geologic Environment;;Characteristics and Control of Landslide in Granite Region——Taking the Granite Landslide in Pingjian of Hunan as an Example[J];国土资源导刊;2016-04
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