RISK ASSESSMENT OF GEOHAZARDS BY USING GIS IN GANGU COUNTY, GANSU PROVINCE

WANG Lei; ZHANG Chun-shan; YANG Wei-min; SUN Wei-feng; QIU Zhan-lin; WANG Tao

2011 Vol. 17, No. 4

Article Contents

Article navigation > Journal of Geomechanics > 2011 > 17(4): 388-401

Next Article Previous Article

WANG Lei, ZHANG Chun-shan, YANG Wei-min, SUN Wei-feng, QIU Zhan-lin, WANG Tao. RISK ASSESSMENT OF GEOHAZARDS BY USING GIS IN GANGU COUNTY, GANSU PROVINCE[J]. Journal of Geomechanics, 2011, 17(4): 388-401.

Citation:

WANG Lei, ZHANG Chun-shan, YANG Wei-min, SUN Wei-feng, QIU Zhan-lin, WANG Tao. RISK ASSESSMENT OF GEOHAZARDS BY USING GIS IN GANGU COUNTY, GANSU PROVINCE[J]. Journal of Geomechanics, 2011, 17(4): 388-401.

RISK ASSESSMENT OF GEOHAZARDS BY USING GIS IN GANGU COUNTY, GANSU PROVINCE

1.
Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China
2.
School of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, China

Received Date: 04 May 2011

Publish Date: 25 December 2011

Abstract

Abstract

Based on detailed investigation of geo-hazards in Gangu County, the authors made evaluation zoning of geo-hazards risk assessment in Gangu County by using the combined qualitative analysis and quantitative evaluation on the GIS platform. On the basis of comprehensive analysis of the present landslides and geological environment in Gangu County, the authors analyzed the main factors controlling the formation of landslides. These factors involve such aspects as ①geo-hazards historical intensity, ②topography and geomorphic, ③engineering geological layer combination, ④tectonic setting and faults effects, ⑤the degree of vegetation coverage, ⑥the effects of water, ⑦human activities, and ⑧rainfall conditions. With the selected indices quantified according to experts' experience, the index system of geo-hazards risk assessment was formulated. The study area was finally divided into 4 levels of the high-grade area, the medium-grade area, low-grade area, and the very low-grade area. According to the results of landslide hazard zonation, the high-grade area covers 393.19 km², accounting for 25.01% of the total study area; the medium-grade area is 544.04 km², accounting for 34.61%;the low-grade area is 324.69 km², accounting for 20.65%;and the very low-grade covers 310.08 km², accounting for 19.73% of the whole county.
- Gangu County /
- geo-hazards /
- Geographical Information System /
- risk assessment

FullText(HTML)

References

[1]	殷坤龙, 朱良峰.滑坡灾害空间区划及GIS应用研究[J].地学前缘, 2001, 8 (2): 279~284. Google Scholar YIN Kun-long, ZHU Liang-feng.Landslide hazard zonations and application of GIS [J].Earth Science Frontiers, 2001, 8 (2): 279~284. Google Scholar
[2]	朱良峰, 殷坤龙.基于GIS技术的区域地质灾害信息分析系统研究[J].中国地质灾害与防治学报, 2001, 12 (3): 79~83. Google Scholar ZHU Liang-feng, YIN Kun-long.Information analysis system of geo-hazards supported by GIS [J].The Chinese Journal of Geological Hazard and Control, 2001, 12 (3): 79~83. Google Scholar
[3]	郭芳芳, 杨农, 张岳桥, 等.基于GIS的滑坡地质灾害地貌因素分析[J].地质力学学报, 2008, 14 (1): 87~96. Google Scholar GUO Fang-fang, YANG Nong, ZHANG Yue-qiao, et al.GIS-based analysis of geomorphological factors for landslide hazards [J].Journal of Geomechanics, 2008, 14 (1): 87~96. Google Scholar
[4]	吴树仁, 石菊松, 张春山, 等.地质灾害风险技术指南初论[J].地质通报, 2009, 28 (8): 995~1005. Google Scholar WU Shu-ren, SHI Ju-song, ZHANG Chun-shan, et al.Preliminary discussion on technical guideline for geo-hazards risk assessment [J].Geological Bulletin of China, 2009, 28 (8): 995~1005. Google Scholar
[5]	王涛, 吴树仁, 石菊松.国际滑坡分析评估与管理指南研究综述[J].地质通报, 2008, 28 (8): 1006~1019. Google Scholar WANG Tao, WU Shu-ren, SHI Ju-song.A review of international landslide risk assessment and management guidelines [J].Geological Bulletin of China, 2008, 28 (8): 1006~1019. Google Scholar
[6]	陈奇, 李智毅, 石怀伦.区域地质灾害危险性评价的思路与基本方法[J].地质力学学报, 2004, 10 (1): 71~80. Google Scholar CHEN Qi, LI Zhi-yi, SHI Huai-lun.Thoughts and basic methods of regional geological hazard risk assessment [J].Journal of Geomechanics, 2004, 10 (1): 71~80. Google Scholar
[7]	马寅生, 张业成, 张春山, 等.地质灾害风险评价的理论与方法[J].地质力学学报, 2004, 10 (1): 7~18. Google Scholar MA Yin-sheng, ZHANG Ye-cheng, ZHANG Chun-shan, et al.Theory and approaches to the risk evaluation of geological hazards [J].Journal of Geomechanics, 2004, 10 (1): 7~18. Google Scholar
[8]	周平根.滑坡监测的指标体系与技术方法[J].地质力学学报, 2004, 10 (1): 19~26. Google Scholar ZHOU Ping-gen.Indicator system and techniques of landslide monitoring [J].Journal of Geomechanics, 2004, 10 (1): 19~26. Google Scholar
[9]	张永双, 石菊松, 孙萍, 等.汶川地震内外动力耦合及灾害实例[J].地质力学学报, 2009, 15 (2) 131~141. Google Scholar ZHANG Yong-shuang, SHI Ju-song, SUN Ping, et al.Coupling between endogenic and exogenic geological processes in the Wenchuan earthquake and example analysis of geo-hazards [J].Journal of Geomechanics, 2009, 15 (2): 131~141. Google Scholar
[10]	甘建军, 黄润秋, 李前银, 等.都江堰-汶川公路汶川地震次生地质灾害主要特征和形成机理[J].地质力学学报, 2010, 16 (2): 146~158. Google Scholar GAN Jian-jun, HUANG Run-qiu, LI Qian-yin, et al.Formation mechanism of geo-hazards triggered by Wenchuan Ms 8.0 earthquake along Dujiangyan-Wenchuan highway [J].Journal of Geomechanics, 2010, 16 (2): 146~158. Google Scholar
[11]	张永双, 雷伟志, 石菊松, 等.四川5.12地震次生地质灾害的基本特征初析[J].地质力学学报, 2008, 14 (2): 109~116. Google Scholar ZHANG Yong-shuang, LEI Wei-zhi, SHI Ju-song, et al.General characteristics of 5.12 earthquake-induced geo-hazards in Sichuan [J].Journal of Geomechanics, 2008, 14 (2): 109~116. Google Scholar
[12]	吴玮江, 王念秦.甘肃滑坡灾害[M].兰州:兰州大学出版社, 2006. Google Scholar WU Wei-jiang, WANG Nian-qin.Landslide hazards in Gansu Province [M].Lanzhou: Lanzhou University Press, 2006. Google Scholar
[13]	张春山, 孙伟烽, 谭成轩, 等.四川汶川Ms 8.0级地震重灾区地质灾害危险性评价和预测[J].地质通报, 2009, 28 (8): 1138~1145. Google Scholar ZHANG Chun-shan, SUN Wei-feng, TAN Cheng-xuan, et al.Assessment of geo-hazards in severely damaged region by Wenchuan Ms 8.0 earthquake, Sichuan Province, China [J].Geological Bulletin of China, 2009, 28 (8): 1138~1145. Google Scholar
[14]	张春山, 韩金良, 孙炜锋, 等.陕西陇县地质灾害危险性分区评价[J].地质通报, 2008, 27 (11): 1795~1801. doi: 10.3969/j.issn.1671-2552.2008.11.006 CrossRef Google Scholar ZHANG Chun-shan, HAN Jin-liang, SUN Wei-feng, et al.Assessments of geo-hazards danger zoning in Longxian County, Shannxi, China [J].Geological Bulletin of China, 2008, 27 (11): 1795~1801. doi: 10.3969/j.issn.1671-2552.2008.11.006 CrossRef Google Scholar
[15]	张春山, 张业成, 马寅生, 等.区域地质灾害风险评价要素权值计算方法及应用---以黄河上游地区地质灾害风险为例[J].水文地质工程地质, 2006, 33 (6): 84~88. Google Scholar ZHANG Chun-shan, ZHANG Ye-cheng, MA Yin-sheng, et al.Calculation method and application of the right-weighty value on geological hazards in region [J].Hydrogeology and Engineering Geology, 2006, 33 (6): 84~88. Google Scholar
[16]	张春山, 吴满路, 张业成.地质灾害风险评价方法及展望[J].自然灾害学报, 2003, 12 (1): 96~102. Google Scholar ZHANG Chun-shan, WU Man-lu, ZHANG Ye-cheng, Method and prospect of geological disaster risk assessments [J].Journal of Nature Disaster, 2003, 12 (1): 96~102. Google Scholar
[17]	张春山, 张业成, 张立海.中国崩塌、滑坡、泥石流灾害危险性评价[J].地质力学学报, 2004, 10 (1): 27~32. Google Scholar ZHANG Chun-Shan, ZHANG Ye-cheng, ZHANG Li-hai.Danger assessment of collapses, landslides and debris flows of geological hazards in China [J].Journal of Geomechanics, 2004, 10 (1): 27~32. Google Scholar
[18]	魏平新, 汤连生, 张建国, 等.基于GIS的广东省滑坡灾害区划研究[J].水文地质工程地质, 2005, 32 (4): 6~9. Google Scholar WEI Ping-xin, TANG Lian-sheng, ZHANG Jian-guo, et al.Study on regionalization of landslides based on GIS in Guangdong Province [J].Hydrogeology and Engineering Geology, 2005, 32 (4): 6~9. Google Scholar
[19]	张梁, 张业成, 罗元华, 等.地质灾害灾情评估理论与实践[M].北京:地质出版社, 1998. Google Scholar ZHANG Liang, ZHANG Ye-cheng, LUO Yuan-hua, et al.The geology disaster evaluation theories and fulfillment [M].Beijing: Geological Publishing House, 1998. Google Scholar
[20]	WU Shu-ren, JIN Yi-min, ZHANG Yong-shuang, et al.Investigation and assessment of landslide hazards of Fengdu County in the reservoir region of Three Corges Project on the Yangtze River [J].Environmental Geology, 2004, 45: 560~566. doi: 10.1007/s00254-003-0911-1 CrossRef Google Scholar
[21]	张永波, 张礼中, 周小元, 等.地质灾害信息系统的设计与开发[M].北京:地质出版社, 2001. Google Scholar ZHANG Yong-bo, ZHANF Li-zhong, ZHOU Xiao-yuan, et al.Design and exploitation of information system of geological hazards [M].Beijing: Geological Publishing House, 2001. Google Scholar
[22]	殷跃平, 康宏达, 陈波.三峡工程移民区滑坡防治与利用技术研究[J].地质灾害与环境保护, 2000, 11 (2): 135~140. Google Scholar YIN Yue-ping, KANG Hong-da, CHEN Bo.Landslides control and utilization of measurement in immigrant settlement region of Three Corges Project [J].Journal of Geological Hazards and Environment Preservation, 2000, 11 (2): 135~140. Google Scholar
[23]	张梁, 张业成, 高兴和, 等.地质灾害经济学[M].石家庄:河北人民出版社, 2002. Google Scholar ZHANG Liang, ZHANG Ye-cheng, GAO Xing-he, et al.Geological hazards economics [M].Shijiazhuang: Hebei People's Publishing House, 2002. Google Scholar