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Research on evolution and prevention of the No.1 large-scale dangerous slope of Erlang Mountain on the sichuan-Tibet Highway

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Science china(Technological Sciences) 2003年第z1期46卷 42-51页

作者： ZHANG Xiaoyan The Transportation Department of sichuan Province, chengdu 610041, china Transportat Dept sichuan Prov Chengdu 610041 Peoples R China

sichuan-Tibet Highway traverses the two principal geomorphic units and their transition belt in western china; it has some hazardous slopes characterized by high altitude and chilliness, high elevation, large scale and complexity. Various hazards usually concur in groups. The integrated hazards of these slopes cannot be reflected by any single hazardl they act on one another and develop at the same time, like many other things experiencing a recurrent evolving course from growth to demise. Based on the mechanisms of the typical dangerous No.1 slope of Erlang Mountain on the sichuan-Tibet Highway, various simulations through geotechnical test, numerical calculation, and in-situ monitoring have been carried out to control and regularize the last phase of evolution of the slope. The text shows that such slopes have developed under geological and engineering conditions that might have enforced the potentiality of hazards; interactions between different hazards are of more menace than any single factor; structures in cooperation with the hazardous bodies may be effective for preventing such calamities.

关键词： hazards of large slope evolution, hazards concurring in group, structure control.

Geo-engineering Lessons Learned from the 2008 Wenchuan Earthquake in sichuan and Their Significance to Reconstruction

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Journal of Mountain Science 2011年第2期8卷 176-189页

作者： HUANG Runqiu State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of Technology Chengdu 610059 Sichuan China

The 2008 Wenchuan earthquake in sichuan of china was the result of quake-triggering along an active several hundred-kilometer-long fault. The subsequent landslides and debris flow geohazards are dominating factors in planning post-disaster recovery and rebuilding. This paper presents recommendations for coping with large-scale geohazards and disasters. It is essential to establish a national emergency management system for huge scale catastrophe and earthquake precursor identification. Town construction must be kept away from active faults, especially to improve town safety in areas with high risk of seismic and geological hazards, and it is important to improve geohazard investigation and remediation for mountain areas that have become loosened by earthquake activity. geological factors must be better understood to reduce direct and secondary risks and effects of earthquakes. Site selections for public relocation require clear and informed analysis of geological and social risk reduction, so that relocation, infrastructure reconstruction, and commemorative relic-sites can be protected.

关键词： Wenchuan Earthquake Geohazard Reconstruction

TECTONIC EVOLUTION OF THE GARZE—LITANG PLATE JUNCTION, WITH PARTICULAR REFERENCE TO THE GOLD DEPOSITS

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地学前缘 2000年第S1期7卷 407-408页

作者： WT5,5”BZ]Zou Guangfu 1, Mao Ying\+2, Mao Junyi\+3 (1 chengdu Institute of Geology and Mineral resources,chengdu 610082, china 2 chengdu Comprehensive rock and mineral Testing Center, chengdu 610081, china 3 Regional geological surveying, sichuan

Garez—Litang plate junction lies in the eastern margin of the Nujiang—Lancangjiang—Jinshajiang area, NW\|trendingly and antisigmoidally extending for more than 800km from Zhidoi ,Qinghai through Garze and Litang to Muli ,sichuan ,with a width of 5～35km .The junction is located in the arcuate turning part of the Alpine—Himalayan—Indosinian Tethyan tectonic domain ,which lies in the structural transition position between the Yangtze plate and the Yidun area . The plate junction represents an important tectonic belt ,which is a composed of a gold mineralization belt in the east Tethyan tectonic domain.(1) Garze—Litang plate junction may be divided into the following structural units:ductile shear zone and fracture system, Paleozoic nappes ,ophiolite \|tectonic blocks,flysch formation in passive continental margin (Triassic Xikang group ),forearc sedimentary formation in active margin (Triassic Yidun group),and such boundary geological bodies as granitoids ,faulted basins and Tertiary nappes.

关键词： tectonic evolution metallogenesis gold deposit Garze—Litang plate junction the eastern part of Qinghai—Xizang plateau china

Hercynian-Indosinian Sedimento-Tectonic Evolution of the Nanpanjiang Basin

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Acta Geologica Sinica(English Edition) 1996年第4期70卷 331-340页

作者： Qin Jianhua, Wu Yinglin, Yan Yangji and Zu ZhongfaResearch Center of Sedimentary and Energy Geology, Chinese Academy of geological Sciences, chengdu, sichuan Research Center of Sedimentary and Energy Geology Chinese Academy of Geological Sciences Chengdu Sichuan

Following the orogeny in the Early Palaeozoic, the tectonic evolution of the Nanpanjiang basin in the Hercynian-Indosinian stage constituted a complete Wilson Cycle, made up of the stages of early rifting (D-P1), late rifting and passive margin developement (P2-T1), and peripheral foreland basin developement (T2-T3). The REE data of the initial Early Triassic basalts from the southern part of the basin has verified the existence of the oceanic crust once in the basinal evolution. The basin developed into a foreland one in the Middle-Late Triassic, indicating that the Yangtze plate once collided with the Indo-Sinian plate along the Black River fracture zone.

关键词： Nanpanjiang basin Hercynian-Indosinian stage rifting peripheral foreland basin

1∶25万色达县幅、阿坝县幅地质调查成果与进展

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沉积与特提斯地质 2005年第1期25卷 135-137页

作者： sichuan Institute of geological survey(sichuan Institute of geological survey, chengdu 610081, sichuan, china) 四川省地质调查院四川成都610081

着重调查了以阿坝盆地为代表的青藏高原东缘新生代盆地的形成演化及其环境变化,新建立了若干生物组合;对第四纪冰川堆积物进行了比较细致的研究,初步建立了气候地层单位;首次于壤塘县曼迪乡上三叠统侏倭组的滑塌堆积层中,采获异地埋葬... 详细信息

着重调查了以阿坝盆地为代表的青藏高原东缘新生代盆地的形成演化及其环境变化,新建立了若干生物组合;对第四纪冰川堆积物进行了比较细致的研究,初步建立了气候地层单位;首次于壤塘县曼迪乡上三叠统侏倭组的滑塌堆积层中,采获异地埋葬珊瑚群化石,建立三叠纪双壳类两个生物带;调查了侏倭组、新都桥组、如年各组3个岩石地层单元基本层序、剖面韵律结构及沉积构造;获得若末柯火山岩和小石头山花岗岩Rb Sr等时线年龄。

关键词： 1:25万地质调查色达县幅、阿坝县幅成果与进展四川、青海

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1∶25万物玛幅地质调查成果与进展

沉积与特提斯地质 2005年第1期25卷 62-66页

作者： sichuan Institute of geological survey(sichuan Institute of geological survey, chengdu 610213, sichuan, china) 四川省地质调查院四川成都610213

对测区岩石地层系统进行了重新划分厘定,正式填图单元33个、非正式填图单元2 0个;在南羌塘板片内首次发现晚三叠世磨拉石建造,并新建亭共拉组;将班公湖怒江结合带南侧的接奴群解体为多仁组和日松组;证实竟柱山组与江巴组应为不同的岩石... 详细信息

对测区岩石地层系统进行了重新划分厘定,正式填图单元33个、非正式填图单元2 0个;在南羌塘板片内首次发现晚三叠世磨拉石建造,并新建亭共拉组;将班公湖怒江结合带南侧的接奴群解体为多仁组和日松组;证实竟柱山组与江巴组应为不同的岩石地层单位,江巴组应恢复其岩石地层单位,并在竟柱山组之上;发现木嘎岗日岩群复理石硅质岩建造被沙木罗组陆源碎屑岩角度不整合覆盖,从而揭示班公湖怒江结合带的关闭上限为晚侏罗世—早白垩世;证实郎山组与下伏地层之间存在一大型海侵超覆界面;在古昌蛇绿混杂岩带内首次发现斜长花岗岩,获1 2 8Ma(Ar Ar法)年龄。证实拉布错一带有一条蛇绿岩带存在,并在蛇绿岩中获1 4 1Ma(Ar Ar法)年龄,表明其构造侵位时期为侏罗系。

关键词： 1:25万地质调查物玛幅成果与进展西藏

Minority population and sustainable development in mountain regions a case study of the Tibetan inhabited region in sichuan, china

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Journal of Geographical Sciences 1998年第4期8卷 12-20页

作者： CHEN Yong HE Ginxi Institute of Population Research, sichuan University, chengdu 610064, china AI Nanshan Institute of Environmental Science & Engineering, sichuan University, chengdu 610064, china

china boasts 56 nationalities who are mostly inhabited in the sparsely populated mountain regions in West china. Like many other places in the Han nationality distributed regions, minority nationality inhabited regions are also facing the challenge of sustainable development in terms of both natural and human factors. Taking the Tibetan inhabited regions (TIR) in sichuan Province as a case, this paper points out some major problems in the process of economic development in perspective of sustainability and leaves some hints for development strategies. While natural conditions such as geological instability are playing a major role to the environmental degradation, human activities and improper use of resources might constitute an important agent in the environmental deterioration. In order to promote local economic development and improve people’s living standard, sustainable planning is expected to be made and people’s awareness of sustainability should be strengthened.

关键词： Tibetan inhabited region (TIR) minority population sustainable development development strategy.

Engineering geological Study of Regional Tectonic Stability in the Area of the Longyang Gorge Power Station on the Huanghe (Yellow) River

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Acta Geologica Sinica(English Edition) 1989年第2期63卷 197-209页

作者： Wang Shitian, Li Yusheng, Su Daogang and Wei Lunwu chengdu College of Geology, chengdu, sichuan Fei Zhenbi chengdu College of Geology Chengdu Sichuan

In the stability study of the regional structures in the area of the Longyang Gorge Hydroelectrical Power Station, a model of the current stress-deformation field of the area was constructed based on analyses of available data of regional surveys and historical earthquakes and field investigations of active faults and ancient earthquakes. This model was examined and verified by physical and mathematical simulation experiments, and quantitative relations and data were obtained.

关键词： River area Engineering geological Study of Regional Tectonic Stability in the Area of the Longyang Gorge Power Station on the Huanghe Yellow

geological Features of Devonian Sedimentary Basins in South china and Their Deposition and Mineralization

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Acta Geologica Sinica(English Edition) 1994年第1期68卷 57-69,109-110页

作者： Liu Wenjun, Zhang Jinquan and Chen Hongde chengdu College of Geology, chengdu, sichuan chengdu College of Geology Chengdu Sichuan

The Devonian succession in South china is well-known for its complete development, vari-fied sedimentary types, remarkable lithofacies variation and abundant mineral resources. The South china plate was formed by the collision and collage of the Yangtze plate and the Cathaysian plate. The collision began approximately at the Jinningian stage and the collage was not finalized until the Guangxian movement. It was on the South china plate with a somewhat different nature of the basement that the Devonian deposition formed.

关键词： Devonian features of sedimentary basins mineralization South china