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Hazard Zoniton of Loess Slopes Geological Disasters in Baoji

Author: ZhangXinRui
Tutor: SunJinZhong
School: Chinese Geology University (Beijing)
Course: Geological Engineering
Keywords: Loess slope Evaluation Of information model Susceptibility Risk
CLC: P694
Type: Master's thesis
Year: 2011
Downloads: 116
Quote: 0
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Abstract

Of about 1/3 of the landslide, avalanche disasters in the loess region, and loess landslides, avalanches is one of the most common geological disasters in these areas. Baoji region Landforms loess stratigraphic full, wide distribution, large thickness, loess fine particles and uniform the loose texture vertical joints developmental. Loess has some special physical and mechanical properties, making the region of loess slope geological disasters such as landslides, avalanches occur frequently. Widely distributed a large number of large-scale, complex nature of serious harm, threatening the lives and property of the people, the safety of traffic safety as well as industrial and agricultural facilities, caused a serious impact on the ecological environment and social development of the region. Geological Survey project has been completed on the basis of further systematic summary and increase identify the loess region slope disasters regularity and the main predisposing factors to achieve the loess slope disaster prone, the zoning and hazard zoning for both loess provide the basis of slope disaster prevention. The research contents are as follows: (1) summarizes the the Baoji loess slope disasters developmental characteristics: to study the impact of the the Baoji loess disaster formed within geological hazard survey of Baoji region on the basis of the analysis of the distribution characteristics of the study area loess slope disasters and distribution law, exogenic geological; (2) build loess slope disaster-prone evaluation index system: the the Baoji loess slope disasters, according to the loess slope disasters characteristics of the study area, select the terrain characteristics, meteorological and hydrological conditions, engineering geology development impact indicators as loess slope hazards rock group characteristics, geological units, ramp structure type, human engineering activities, initially established in Baoji loess slopes prone to geological disasters evaluation index system and grading standards. (3) in Baoji loess slope disaster-prone evaluation: a combination of the amount of information model with ARCGIS detailed survey data, according to geological disasters, extract the influencing factors Layers and superimposed to determine the measure of evaluation of the study area, accordingly divided the Baoji loess slope geological disasters prone extent ultimately prone zoning map of the study area loess slope geological disasters; (4) in Baoji loess slope geological risk evaluation: in Baoji loess slopes prone to geological disasters evaluation main consideration on the basis of rainfall-induced effect, analysis of predisposing factors lead to the loess slope disaster risk, considering the loess slope geological hazard elements, from loess slope disasters stability, deformation history and the history of high-prone areas collapse frequency of landslides, the area loess slope geological hazard zoning studies, drawing Baoji loess area hazard zoning map.

Hazard Zoniton of Loess Slopes Geological Disasters in Baoji

Abstract

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